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List of Best Unit Testing Companies | Top Unit Testing Service Providers

  • QA Mentor

    CMMI appraised, ISO certified Testing Company
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    QA Mentor is multi-awards winning a CMMI level 3 and ISO-certified leading software testing company founded in 2010 with headquarters in New York, USA. The company excels in delivering superior Software Quality Assurance (QA) with their 30+ QA testing services that are availed by clients like Bosch, Morgan Stanley, Ama ... read more about QA Mentor

    "Very professional and solid"
    Lindsey Allard, Co-Founder at PlaybookUX
    < $25/hr
    250 - 999
    2010
    United States, India
  • Impact QA services LLC

    Software Testing and Quality Assurance Company
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    ImpactQA is a leading independent software testing services company based in New York, USA. The company is a global provider of full-cycle software testing and consulting services catering to various industries such as Healthcare, Telecom, Media, E-commerce, and banking worldwide. Their premier clients include Panasoni ... read more about Impact QA services LLC

    "Quality Assurance services: Recommended for the price but need good communication channels"
    Alister Cedeno, QA Manager at Teamflow
    $25 - $49/hr
    250 - 999
    2011
    United States, United Kingdom
  • TestMatick offers end-to-end software test services to a diverse clientele. The company is a leading provider of QA testing and holds expertise in more than 20 types of testing services, such as mobile testing, functional testing, automated testing, usability testing, localization testing, and more. 

    "Successful QA Project"
    Mark Hamilton, Managing Director at Arthur Hamiltons Ltd
    NA
    50 - 249
    2009
    United States, Ukraine
  • Binmile Technologies

    Product Engineering & Software Development Company
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    Binmile is a Product Engineering & Custom Software Development Company with offices across the globe.We are an enterprise software engineering company that helps organizations implement their digital journeys at speed. An ISO 9001:2008 & 27001:2013 certified company, strengthened by our unique Global Deliv ... read more about Binmile Technologies

    "Skilled, transparent & professional team"
    Daniel Prince, Product Manager at Veranda Learning
    $50 - $99/hr
    250 - 999
    2017
    India, United States
  • a1qa

    Software Testing and Quality Assurance Company
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    Founded in 2003, a1qa is one of the independent software testing and quality assurance (QA) companies. a1qa offers its services for all software types, including any PPAs or custom-developed software. The company has reputed certifications like ISO 9001:2015, PMI-ACP, and PMP certifications, and its premium clients inc ... read more about a1qa

    "Software testing professionals who helped us get ready for HIPAA certification"
    Shoshana Parker, Senior Computational Biologist at SBH Health System
    $25 - $49/hr
    1,000 - 9,999
    2003
    United States, United Kingdom
  • SHIFT ASIA

    Quality and Security Assurance Company in HCMC
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    SHIFT ASIA is a leading software testing and quality assurance company based in Vietnam and was founded in 2016. With their team of QA experts and professional full-stack engineers, they specialize in offering a wide range of QA services, including ad-hoc testing, vulnerability testing, GUI testing, etc.

    "Development & Testing for WordPress feature about task and Q&A management"
    YUSHI KODAMA, General Manager at Jienie Lab ASIA. Co., Ltd
    < $25/hr
    50 - 249
    2016
    Vietnam, Singapore
  • HikeQA is one of the top USA-based independent software testing services companies. This QA agency provides exceptional testing services, including Functional testing, performance testing, App testing, and Web testing. They provide 24/7 customer support and claim a money-back guarantee to dissatisfied clients.   ... read more about hikeQA

    "Very nice experience and quality of services is very good"
    Sonal Tripathi, manager at HikeQA
    < $25/hr
    10 - 49
    2020
    India, United States
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  • Next Big Technology(NBT)

    Best Web & Mobile App Development Company
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    Next Big Technology (NBT) is a premium Web & App Development firm established in 2009. NBT always uses the latest technologies for Website & Mobile App development. As an applications development company, we know how to build websites and apps that utilize proper design and programming to build products that ... read more about Next Big Technology(NBT)

    "Very helpful, always quick to reply and help with any problems."
    Andrew McIlravey, Marketing & Business Support Associate at Sonas Systems
    < $25/hr
    50 - 249
    2009
    India
  • DeviQA

    Our Quality - Your Efficiency
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    DeviQA is one of the global leaders in the Quality Assurance and Testing market since 2010. We are the finalist of the Software Testing Award in the nomination "Best Test Automation Project – Functional.". Twelve judges choose a few finalists among hundreds of participants around the globe. Our offer ... read more about DeviQA

    "DeviQA > Experience working with QA out-stuff "
    Yana Kushnareva, Scrum Master at Grover
    $25 - $49/hr
    50 - 249
    2010
    Poland
  • Abstracta

    Passionate testing creates engaging software
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    Abstracta is a leading, pure-play and independent software testing services company founded in 2008 with offices in California and Latin America. We offer testing consultancy services centered on building custom, dedicated testing teams. Our teams have the added value of being able to leverage all of Abstracta’s ... read more about Abstracta

    "Great results and a knowledgeable team"
    Daniela, Business Development Associate at at wrnch
    $50 - $99/hr
    50 - 249
    2008
    United States
  • Captus Technologies

    Hire the Best Web and Mobile App Developers
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    Founded in 2012 and based in the United States, Captus stands as a premier entity specializing in providing web, mobile and software development. Renowned for curating the most talented IT industry professionals, we deliver seasoned expertise spanning over a decade in their respective domains. Our peerless de ... read more about Captus Technologies

    ""Transforming Lotto Billions: A Fruitful Partnership with Captus Technologies""
    Edoardo Paluan, Chief Product Officer & Cofounder at Lotto Billions
    $25 - $49/hr
    10 - 49
    2012
    India
  • Newwave Solutions Jsc

    Top 10 Software & Blockchain Company in Vietnam
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    Newwave Solutions ranked among the top 10 software companies in Vietnam and is recognized globally as one of the top 100 sustained software companies. With 12 years of experience and a dedicated team of over 300 members, we're committed to excellence. WHAT WE'VE ACHIEVED: 🏆 Vietnam's Top 10 ICT Com ... read more about Newwave Solutions Jsc

    "Mobile App Development"
    Evelyn Martinez, Sales Manager at Driscoll's at Driscoll's
    NA
    250 - 999
    2011
    Vietnam
  • Henceforth Solutions Pvt Ltd

    Web And Mobile App Development Company
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    Henceforth Solutions is a full-cycle mobile and web solutions company. We have delivered over 20+ solutions covering 4 verticals Web, Mobile Gaming, Enterprise Mobility, MVPs (Minimum Viable Products) for startups, and Internet of Things-based solutions. Our offices across Canada and India allow our clients to benefit ... read more about Henceforth Solutions Pvt Ltd

    "Exceptional Collaboration with Real Results"
    Tyler Durden, Professional Athlete/Entrepreneur at Ppirols Net
    < $25/hr
    50 - 249
    2017
    India
  • TECUNIQUE PRIVATE LIMITED

    Elevate Your Business with TECUNIQUE's Tailored
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    TECUNIQUE, a distinguished Indian software services company with over 14 years of industry experience, is a growing leader in the realm of offshore software development and quality assurance services. Our unwavering commitment to excellence has positioned us as a trusted partner for start-ups, software development comp ... read more about TECUNIQUE PRIVATE LIMITED

    "A true partner"
    Guillaume Brejaud, COO at oppScience at OPPSCIENCE
    NA
    50 - 249
    2010
    India
  • ZUZEX

    Software development on demand
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    ZUZEX is committed to a responsible approach to the development process and provides the planet with complex web, mobile, and desktop software. All our developers work full time on-site, so complete control is exercised on your project at any moment, as well as good coordination of all the team members. We apply Waterf ... read more about ZUZEX

    "Very reliable partner to build your software"
    Michael Gutkins, Head of Data Science & Analytics at Httpool at Httpool
    $25 - $49/hr
    50 - 249
    2008
    Israel
  • BugRaptors

    Leaders in Software Testing & QA Services
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    BugRaptors – Improve Your Chances of Success with QA Solutions   Discover excellence in QA software testing services with BugRaptors, a renowned industry leader since 2016. Armed with ISO 9001:2018 and ISO 27001 certifications, our innovative approach to quality engineering solutions propels digital ... read more about BugRaptors

    "Greate team providing excellent QA/Testing services and development assistance along with potential improvements."
    Mohit Gupta, Technical Product Manager | Machine Learning Engineer at Timble Technologies Pvt Ltd
    < $25/hr
    250 - 999
    2016
    India
  • Relevant Software

    Web&Mobile Apps Development | Dedicated Engineers
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    Relevant is an international software development company that designs, builds and delivers products of world-class standard for Fortune 500 companies and promising startups. We provide software development teams made up of the best engineers from around the world, benefiting globalization and diversity.  More ... read more about Relevant Software

    "High professionalism, great resource management and engagement with the project"
    Julia Orlovska
    $25 - $49/hr
    50 - 249
    2013
    Poland
  • KMS Solutions is a premier technology consulting and solutions provider that empowers BFSI enterprises to optimize operations, drive innovation and help them enhance their product & service offerings through the seamless integration of cutting-edge technologies and tailored solutions. To learn more about KMS Sol ... read more about KMS Solutions

    "We need a tool to help us gain better insights into how users engage with our digtal product. KMS Solutions recommended a product analytics solution t"
    Thuan Do, Teacher Manager at Schola
    NA
    250 - 999
    2019
    Vietnam
  • QA Supermarket

    Quick as automated testing, Clever as a human
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    QAsupermarket is a place where you can get your software tested by professionals with the maximum automation of processes and with the minimum time and money expenses. QAsupermarket will cover all test types you need on any platforms you need. Professional tools such as Online Bug Tracking System and easy-to-use ... read more about QA Supermarket

    "Excellent experience using QA supermarket"
    Fern Bazuin, Quality Assurance Manager at at RoomRaccoon
    NA
    2 - 9
    United States
  • DataArt

    Enterprise Software Development Company
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    Founded in 1997, DataArt is a global software engineering firm that has continually evolved to become the trusted technology partner of market leaders. Led by our people-first principle, our world-class team designs and engineers data-driven, cloud-native solutions to create immediate and enduring business value. Throu ... read more about DataArt

    "Long-lasting technology partnership with DataArt"
    Justin Baker, Senior Director of Engineering at Apple Leisure Group
    $50 - $99/hr
    1,000 - 9,999
    1997
    United States
  • Spiral QA

    Full suite of software testing solutions
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    Spiral QA gives companies the software testing and quality assurance support they need to create better, more user-friendly web and mobile applications. For over 9 years, our dedicated team of software testers and quality assurance specialists at Spiral QA has been helping businesses build confidence in their products, ... read more about Spiral QA

    "Web Application Testing Partnership "
    Bogdan Nechaev, Chief Knowledge Officer at IM Action
    $25 - $49/hr
    10 - 49
    2011
    United States
  • test IO

    Fast QA Testing as a Service
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    As a global leader in software crowdtesting, we enable fast moving software development teams with a platform for on-demand QA testing throughout the entire development cycle. Test setup takes just minutes, and we dynamically allocate human testers in real-world conditions to fit your specific testing needs. No more QA ... read more about test IO

    "Excellent team. Value for money!"
    Nick woods
    $50 - $99/hr
    10 - 49
    2011
    United States
  • Bladeware

    Trusted Software Design & Development company
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    Bladeware is an award-winning software Design & Development company that helps many businesses around the world - from small startups who need to build an MVP to mid-sized businesses who has a need in IT services and digital transformation. During the last 5 years being on the market we built and deliv ... read more about Bladeware

    "Roman & the Bladeware team were absolutely incredible. They far exceeded my expectations and delivered incredible designs for the app"
    Corey Kuether, Senior Android Developer at booj
    $50 - $99/hr
    10 - 49
    2018
    United Kingdom
  • DOIT Software

    Mobile Apps, Software Development & Staffing
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    -DOIT Software is your technology satellite for sustainable growth.  We offer: 1. Development of  Mobile Apps & Custom Software Development from scratch. DOIT Software can help you to evolve an idea and create a solution from the concept. 2. IT Staff Augmentation and ... read more about DOIT Software

    "Extremely high quality developers and communication"
    Michael Gordon
    $25 - $49/hr
    10 - 49
    2014
    Ukraine
  • TestDel has developed its services for companies wishing to outsource all or a portion of their software quality activities so they may gain testing efficiencies and reduce administrative burdens associated with in-house QA teams. An established and trusted brand with a global presence and network. TestDel delivers Ons ... read more about Testdel UK LTd.

    "Health Care Industry "
    Lisa Barnett
    NA
    50 - 249
    2016
    United Kingdom
  • BIT Studios

    Cutting-Edge Web, Software Dev & IT Outsourcing
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    BIT Studios is a trusted custom software development partner for hundreds of diverse businesses, both large and small. Our award-winning team of developers, UX designers, and marketing experts has over 33 years of combined experience creating immersive experiences on web, mobile, and console platforms.  

    "Game changing partner"
    Thomas Cronkright, CEO at CertifID
    $50 - $99/hr
    10 - 49
    1990
    United States
  • NEWNOP Co. Ltd

    IT powered business solutions
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    At NEWNOP, we aspire to be a solution provider for global business problems through IT. Our solutions encompass innovative software, AI / ML, and IoT solutions and technical consultations. We happened to have launched many successful software, AI and data science solutions including, but not limited to, - Web/ An ... read more about NEWNOP Co. Ltd

    "Non-linear data in data analysis was well analyzed."
    sungryul park, UMTR Chief Executive Officer at UMTR
    $25 - $49/hr
    10 - 49
    2022
    Sri Lanka
  • Modelit

    We implement Salesforce solutions
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    Our services include Salesforce Custom Development, Salesforce Configuration, and building apps for the Salesforce AppExchange. At Modelit, we take care of all the aspects to implement a new system, configure a current set up, or build an application. Our team of Salesforce Certified Developers, Administrators, QA A ... read more about Modelit

    "Experts + Efficient + Reliable = Model IT"
    Cecilia Mescall
    $25 - $49/hr
    10 - 49
    2012
    Uruguay
  • Lerpal

    Tech aces for Media and Marketing industries
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    Welcome to Lerpal — a tech company with a client-centric approach. In the game since 2004, we are headquartered in NJ with 100+ team members operating from 10 locations across Europe. We understand why you're here. You're looking for a reliable tech partner that not only understands ... read more about Lerpal

    "High Level of Expertise Equals High Level Product"
    Jeff Boyes, CEO/Founder at Evolution Nutrition & Daily Nourish at Evolution Nutrition
    $50 - $99/hr
    50 - 249
    2004
    United States
  • twoiq LLP

    Technology with Optimum IQ
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    We are a fast-growing multiskilled IT Consultancy Firm located in Ahmedabad. We are focused on solving business problems and providing simple smooth and creative IT solutions to the customer.We are a people-oriented company who are passionate about technology who will do wonders to help you out with the Digital Solutio ... read more about twoiq LLP

    "One of the best programming teams that I've worked with (and I've worked with a lot over the past 12 years) "
    Sameep Shah - Solutions Expert, Website & SEO Project Management at Simplewebdesign.net
    < $25/hr
    10 - 49
    2015
    India
  • mVerve, a boutique Enterprise Software Services firm based in Bengaluru with clients all across the Globe. mVerve offers B2B & B2C digital solutions on Mobile and Web platforms. Our enterprise-grade services include Digital Advisory, UI/UX Design, Mobile/Web App development, Emerging technologies like wearables, bo ... read more about mVerve

    "Had A Great Experience"
    sneha singh
    < $25/hr
    10 - 49
    2017
    India
  • TestUnity

    You Make Apps. We make them Better.
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    A SaaS platform, dedicated company for all kinds of software testing services need. A complete QA organization for on-demand scalable testing services need with all pre-defined well-set processes & procedures. A QA community with a pool of talented resources spread across the world to cater to the need of demanding ... read more about TestUnity

    "Plug and play solution via Resource -as -Is availability. Highly effective"
    Prashant Kanoo, Head of IT/CTO at DHS Arabia
    < $25/hr
    50 - 249
    India
  • Magic Finserv

    Driving Business Impact from Information
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    Magic FinServ is a leading digital technology services company for the FinTech industry. We bring a rare combination of financial services domain knowledge & new-age technology skills in Blockchain & Artificial Intelligence. We offer end to end services to be your one-stop provider so that our customers focus o ... read more about Magic Finserv

    "Awesome Product"
    Lakshmeesh Goel, Senior Interactive Artist at Magic Software Inc.
    NA
    50 - 249
    2016
    United States
  • Aspired

    Elite. Remote Team. On-Demand.
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    Aspired helps its clients hire and build a remote autonomous dedicated team by carefully selecting the elite from the global pool of talent.  Our team of experts identifies new & emerging tech hubs and pair our top engineers with teams engaged in solving thought-provoking problems. We provide complete opera ... read more about Aspired

    "Outstanding service, exceeded my expectations. Highly recommended!"
    Tim Rice, Co-founding CEO at Coin Metrics at Coin Metrics
    $25 - $49/hr
    50 - 249
    2020
    United States, UAE
  • PieSoft

    Development as Easy as Pie
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    PieSoft is an international company based in Pennsylvania with satellite offices located in Poland and Georgia. How we assist you  We offer start-ups and companies a full spectrum of custom software and hardware development services to achieve business continuity, agility, and efficiency. PieSoft in numbe ... read more about PieSoft

    "With the introduction of PieSoft's CRM, we've been able to manage and enhance our production"
    Laura Cerezo, Director at GistOp
    $25 - $49/hr
    50 - 249
    2012
    United States
  • NMG Technologies

    Transforming Startups into Industry Leaders
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    NMG is a globally recognized digital solutions powerhouse, specializing in full-cycle software development since 2008. With over 15 years of expertise, we serve a diverse clientele, from NASDAQ-listed corporations to innovative startups, delivering solid solutions within budget and timelines. Our team comprises over 15 ... read more about NMG Technologies

    "Highly recommend them as Best Mobile App Developers"
    Jeremy Tillman, Founder & CEO at Tillman Learning LLC
    $25 - $49/hr
    50 - 249
    2008
    United States, India
  • instinctools

    Dedicated Software Development Teams
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    *instinctools is a software product development and consulting company with headquarters in Germany and the USA. Powered by 350+ seasoned in-house professionals located in development hubs in Poland, Kazakhstan, and LATAM, we provide self-managed cross-functional dedicated teams to reduce development costs while inc ... read more about instinctools

    "The team delivers on time and within budget, proactively asking how to help the client and providing new ideas."
    Sebastian Belle, Head of Engineering at lawpilots GmbH
    $25 - $49/hr
    250 - 999
    2000
    United States, Germany
  • Skalfa

    Developing web & mobile products for businesses
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    Over the last 15 years, Skalfa provided software and mobile app development services to companies of all sizes, from independent startups to government NGOs and multinational enterprises. In recent times we focused on Progressive Web App (PWA) development, as it becomes a major selling point for many businesses. Our wo ... read more about Skalfa

    "Skalfa websites and support service"
    Jason Wilson, Strategic Hiring Consultant (Manufacturing) at MatchRecruit.ca
    $25 - $49/hr
    10 - 49
    2004
    United States
  • Vention is the premier global leader in software engineering, synonymous with technology designed for scale and the common denominator behind the world’s most successful tech-empowered enterprises, industry innovators, and startups. Headquartered in New York with 20+ offices, Vention provides access to 3,000+ eng ... read more about Vention

    "Save up to 40% of the budget, time and efforts comparing to on-site experts or IT consulting"
    Павел Кувшинкин, QA Engineer at Boxwood Studio
    $50 - $99/hr
    1,000 - 9,999
    2002
    United States
  • Sigma Software is a team of 2000 IT experts across the USA, Sweden, UK, Canada, Israel, Singapore, UAE, Australia, Austria, Ukraine, Poland. For almost 20 years we have successfully been helping our clients to solve their business challenges through managed services, dedicated development teams & smart solutio ... read more about Sigma Software Group

    "Overwhelming Positive Experience With Very Quick Turnaround."
    Jennifer Benbow, Nick Pearson, Co-Founder at Twixt
    $50 - $99/hr
    1,000 - 9,999
    2002
    Ukraine
  • ITC Infotech is a leading global technology services and solutions provider, led by Business and Technology Consulting. ITC Infotech provides business-friendly solutions to help clients succeed and be future-ready, by seamlessly bringing together digital expertise, strong industry specific alliances and the unique abil ... read more about ITC Infotech

    "Unifi Aviation LLC – Sandeep Angra"
    Sandeep Angra, CIO/CTO at Unifi Aviation
    NA
    10000+
    2000
    India
  • MWDN Ltd.

    Dedicated teams, Remote R&D, Software Development
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    We are a software development company with development centers in Ukraine. We help early-stage startups to build awesome products and raised investments as well as cooperate with companies from Fortune 500 list and reducing a development cost with the help of providing excellent talents - Dedicated/Extended teams and f ... read more about MWDN Ltd.

    "Professionall and relyable"
    Dimitri Gärtner, Founder at FRAMEN GmbH
    $25 - $49/hr
    50 - 249
    2002
    Ukraine
  • The Evenstar

    Web application & 3D development
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    We are a 3D & Web development company that provides full-cycle development and outstaffing services. We have managed to successfully bring together highly-experienced professionals who work towards getting you the best out of your business.  Get a free consultation with us and begin to accelerate the g ... read more about The Evenstar

    "React Developer"
    Matthias Peeters
    $25 - $49/hr
    10 - 49
    2017
    Ukraine
  • Aimdek Technologies

    Your Technology Partner for Growth
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    AIMDek, incorporated in the year 2014, aims at empowering businesses across the globe with high-class infrastructure for information technology solutions. As an organization, we excel in delivering quality, innovative business strategies and resolve complex business challenges in digitalization. We are one of the le ... read more about Aimdek Technologies

    "AIMDek is a serious company, and we are very satisfied with the work."
    Polargentina, CTO at POL Argentina
    $25 - $49/hr
    50 - 249
    2014
    India
  • ETEAM

    The innovator's engineering team
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    ETEAM is a seasoned digital product agency specializing in transformative growth for different types of businesses, from VC-backed startups to the largest company in the world, for the last decade.  We're best known for translating the complex world of digital development into clear and easy-to-understand p ... read more about ETEAM

    "A terrific experience with a contracted engineering team"
    Corbin Fraser, Group Product Manager at at Bitcoin.com
    $50 - $99/hr
    50 - 249
    2016
    United States
  • Digital and asset-based business solutions that bridge clients execution gap to build stronger, simplified and more innovative businesses.Our team has some highly skilled coders cum programmers. Focused on our individual clients served by attentive leadership & people who aim relentless pursuit towards achieving be ... read more about Webkorps Services India Pvt. Ltd.

    "Committed towards quality"
    Neha Verma, Engineering Practice Head at Webvillee Technology Pvt. Ltd.
    $25 - $49/hr
    50 - 249
    2016
    India
  • Nestormind excels in delivering projects on time, within budget & with uncompromising quality, and takes full responsibility for every aspect of your project, regardless of its scale or intricacy. 𝗡𝗨𝗠𝗕𝗘𝗥𝗦 𝗧𝗛𝗔𝗧 𝗦𝗣𝗘𝗔𝗞 𝗩𝗢𝗟𝗨𝗠𝗘𝗦: ⚡Top Rated Plu ... read more about Nestormind Pvt. Ltd.

    "Web page modification"
    Aldo Victoria, CEO at Dobitcloud
    $25 - $49/hr
    10 - 49
    2019
    India
  • Techforce provides solutions for every business need and has been serving global customers since 2015.Focused on industry-leading technology, Techforce supports its customer’s growth with flexible, scalable, and intelligent solutions implemented and supported by an experienced technical force.

    "Metaversity SmartContract"
    Tarsha Weary, Web 3 Founder⚡ Metaverse Creator ⚡Masters Degree in Failing; Ph.D. in Getting Back Up! at SW Design Metaversity
    $25 - $49/hr
    50 - 249
    2015
    United States
  • Envion Software is a global software partner that specializes in creating custom software solutions. How we do it is what makes us one of the top software firms in the Boston area. We approach each project as an opportunity to use our experience, creativity, intuition to deliver results that often exceed expectations. ... read more about Envion Software

    "Extremely satisfying experience working with Envion, friendly and professional completion of tasks. "
    Douglas Farrell
    $25 - $49/hr
    50 - 249
    1984
    United States
  • Itransition

    Enterprise Software. Advanced Web. Mobile Apps
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    Since 1998, Itransition has been delivering full cycle software development services to customers in over 30 countries worldwide. Itransition is an expert in development, customization, and integration of complex enterprise-level solutions, advanced web and mobile applications offering a well-balanced blend of technolo ... read more about Itransition

    "They helped our new office become fully operational from day one "
    Anonymous
    $25 - $49/hr
    250 - 999
    1998
    United States, United Kingdom
  • Flyoutsourcing

    Get more freedom with fly outsourcing
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    We are an agile team of 10 result driven, customer-focused, articulate and analytical software and testing engineers with more than 5 years average experience.We have extensive background in full life-cycle of software development process including requirements gathering, design, coding, testing, debugging and maintena ... read more about Flyoutsourcing

    "Responsible software offshore developers"
    James Doodley, Project Development Manager at Off Road Equipment Parts, Inc.
    $25 - $49/hr
    10 - 49
    2016
    United States

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Unit Testing vs. Integration Testing: Key Differences

FeatureUnit TestingIntegration Testing
DefinitionTests individual units of code (functions, modules) in isolation to ensure they work as expected according to their specific functionalities.Tests how multiple individual software components or modules interact and exchange data with each other, ensuring seamless communication and collaboration.
FocusInternal logic and behavior of individual code units.Interoperability and data exchange between components.
TimingUsually conducted early in the development cycle, after coding but before other testing stages.Typically conducted after unit testing and before system testing.
Test casesDesigned to cover various input scenarios, expected outputs, and error handling within the specific code unit.Focused on specific interfaces, data flows, and error handling between modules with mockups or stubs for external dependencies.
Tools usedMocking frameworks, unit testing frameworks.Mocking frameworks, integration testing frameworks.
OutcomeIdentifies bugs and errors within individual code units, promoting clean and modular development.Ensures modules work together properly, data is exchanged correctly, and integration flaws are identified before moving to broader testing.
ExampleTesting if a function calculating shipping costs produces the correct output for different addresses and weights.Testing whether the order processing system interacts correctly with the inventory and payment modules ensures accurate data transfer.
DependenciesDependent on the accuracy and completeness of unit tests to ensure proper functioning of individual units or components.Dependent on the stability and correctness of unit-tested components to ensure they integrate seamlessly.
AutomationCommonly automated using testing frameworks like JUnit, pytest, or NUnit to streamline the testing process.Frequently automated using integration testing frameworks or tools to facilitate the execution and analysis of integrated components.
GoodFirms NotesUnit testing is a "white-box" approach, examining the internal code of individual units.Integration testing is a "black-box" approach, focusing on the communication and behavior between components without delving into their internal structure.