Strong on both Core Competencies and 360-Performance. These firms have proven track records, deep specialisation, and solid client outcomes. Default recommendation for most buyers.
Top IT Services Companies in California
Goodfirms has reviewed 759 IT Services Companies in California as of September 2026. The top-ranked firm is Instinctools (4.9 stars, 27 verified reviews, $25 - $49/hr, founded 2000, San Francisco). Across the category, the median hourly rate is $25, median client rating is 4.8, and 33% of firms employ 50+ members. Explore the vetted IT Services Companies in California below, compare their strengths, and connect with the provider best suited to your requirements.
Are you looking to seek consultation from the best IT services companies in California? Professional IT services lend you a fresh perspective and help you analyze your existing setup. Innovative solutions from IT service providers will act as a catalyst to bring about positive changes in your current setup and help you strengthen the security of your data. With cost-effective, customized solutions, you can realize more productivity in your structure. Here is a list of the top IT firms in California rated on quality, reliability, and ability.
Goodfirms has verified 759 IT Services Companies in California - part of 16,892+ IT Services Companies, each passing Goodfirms' 4-step verification process (background check, client interviews, portfolio audit, ongoing quality review). Listings marked "Sponsored" are agencies that pay for premium placement - sponsorship does not affect star ratings or review content.
Top 10 at Glance
Compare the highest-ranked firms first side by side.
List of IT Services Companies in California | Top IT Firms in California
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UsssTech is a technology solutions company that helps businesses streamline operations, strengthen infrastructure, and accelerate growth through a unified approach to technology, development, marketing, and support. We eliminate the complexity of managing multiple vendors by bringing critical business services under one roof. From managed IT services and infrastructure management to website development, CRM solutions, digital ... read UsssTech reviews & insights
$50 - $99/hr2 - 92020Encino, United StatesWhy UsssTech?
- One team for IT, marketing, and web - no juggling
- 24-7 monitoring, real engineers, real SLAs
- Single point of accountability every time
Be Structured Technology Group, Inc. is a leading Managed Services IT provider in the Los Angeles Metro and Orange County. We partner with small businesses and non-profits by assuming the full responsibility of an IT department. We provide proactive solutions, expert help, responsive service, and a CTO/CIO at half the cost of a full-time IT ... read Be Structured Technology Group, Inc. reviews & insights
< $25/hr10 - 492007Los Angeles, United StatesTeraCloud is a consulting company created by certified cloud experts in migrating and deploying startups, enterprises and everything in between to the cloud. Our expertise range from designing state of the art cloud architecture to deploying and managing cloud environments through Managed Services including AWS Architects, DevOps, 24/7 Support, Automation, Monitoring, Disaster Recovery and Security. ... read Teracloud reviews & insights
$25 - $49/hr10 - 492017San Francisco, United StatesSynopsys technology is at the heart of innovations that are changing the way we live and work. The Internet of Things. Autonomous cars. Wearables. Smart medical devices. Secure financial services. Machine learning and computer vision. These breakthroughs are ushering in the era of Smart, Secure Everything―where devices are getting smarter, everything’s connected, and everything must ... read Synopsys reviews & insights
< $25/hr10000+1986Mountain View, United StatesFor Hubrum, “ Redefining the fututre” is more than a slogan - it reflects our approach to every engagement. Hubrum delivers digital transformation and technology services from ideation to execution, enabling Global clients to outperform the competition. “Born digital,” Hubrum takes an agile, collaborative approach to creating customized solutions across the digital value chain.
$25 - $49/hr10 - 492017Santa Clara, United StatesTrace3, a pioneer in business transformation solutions, empowers organizations to lead their market space by keeping pace with the rapid changes in IT innovations ensuring relevance to specific business initiatives required to maximize revenue generation by leveraging the latest Silicon Valley, cloud, big data and datacenter technologies maximizing organizational health. We have a unique ability ... read Trace3 reviews & insights
$150 - $199/hr250 - 9992002Orange County, United StatesFounded in 1998, OC IT Solutions is a leading MSP (Managed Service Provider) providing IT support services to businesses of all sizes in various industries. We offer a host of business technology services from managed IT and network security services to telecommunication and surveillance systems.
$150 - $199/hr2 - 91998Irvine, United StatesWATI is an IT services and solutions firm focused on Cyber Security Solutions, IT Security Services, Risk Management, Cloud Enablement, Business Intelligence, System Modernization, ERP Implementation, System Integration, for public sector agencies and enterprises across diverse industries. With decades of experience and an evolved delivery model, We deliver specific solutions that enable business efficiencies to ... read West Advanced Technologies Inc reviews & insights
$50 - $99/hr50 - 2491998Sacramento, United StatesAt Fusion Technology Solutions, we are serious about combining business and technology. And while we love technology (after all that’s why we got into this business) we’re about more than blinking lights, and gigabytes. We’re about helping you get things done. So whether you’re trying to increase sales, manage expenses, or improve employee morale, we ... read Fusion Technology reviews & insights
$25 - $49/hr10 - 492001Newport Beach, United StatesLevelShift – your AI transformation partner, is a global technology solutions provider founded in 1998. We have been certified as a ‘Great Place to Work’ for five consecutive years from 2021 to 2025. Our 300+ customers consider us a highly trusted partner for innovation and AI adoption. LevelShift helps organizations transform into AI-native enterprises, embedding ... read LevelShift reviews & insights
NA250 - 999Irvine, United StatesSince 2005, Promising Solutions has been helping small to mid-size businesses redefine the meaning of IT support and create a better IT experience. Our services include Office 365 migration, managed IT services, cloud services, telecommunications services, managed security services, and help desk & support. We focus on developing strong partnerships with our customers by delivering ... read Promising Solutions reviews & insights
NA2 - 92005Glendale, United StatesThe SEO Doctors is a leading search engine optimization company located in New York City. Our team of experts specializes in providing customized SEO solutions to help businesses increase their online visibility and reach their full potential. Our services include keyword research, on-page optimization, technical SEO, link building, and reporting and analysis. We prioritize transparent ... read The SEO Doctors reviews & insights
NA10 - 492016Los Angeles, United StatesApex Solutions, a leading Managed Service Provider (MSP) that provides comprehensive IT services and solutions to businesses of all sizes. Our mission is to deliver innovative and reliable IT solutions that help our clients achieve their business goals. At Apex Solutions, we pride ourselves on our team of highly skilled professionals who are passionate about ... read Apex Solutions MSP reviews & insights
$50 - $99/hr2 - 92023Redlands, United StatesWelcome to Giamars Technology, a leading software development company that is changing the game in the tech industry. With a team of highly skilled and innovative developers, we are dedicated to creating cutting-edge solutions for businesses of all sizes. At Giamars Technology, we understand the importance of staying ahead of the curve in today's ever-evolving ... read Giamars Technology reviews & insights
$25 - $49/hr2 - 92020San Francisco, United StatesPCFitment specializes in automotive fitment data solutions for auto parts eCommerce businesses. We provide precise parts compatibility data, vehicle application mapping, and catalog optimization services. Our accurate fitment system helps reduce returns, improve product accuracy, and increase online sales for automotive retailers and distributors globally.
< $25/hr10 - 492015Los Angeles, United StatesUsing AI Tools
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Full Overview (Best for "About Company" Section on GoodFirms)About TechInSF Consulting LLCTechInSF Consulting LLC is a full-service technology consulting firm headquartered in San Francisco, California. Built on the principle of offering transparent, common-sense approaches to complex technology, TechInSF serves as a trusted, comprehensive tech partner for businesses, startups, and individuals across the Bay Area.Led by ... read TechInSF Consulting reviews & insights
$100 - $149/hr10 - 492021San Francisco, United StatesWhy TechInSF Consulting?
- Local SF experts for on-site & remote IT support
- Transparent pricing with no hidden surprises
- All-in-one IT, web design & marketing team
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GSD is a mission-driven technology team working with nonprofits, B Corps, and social enterprises. We share the values we help our clients navigate, and we bring senior IT, security, and compliance leadership plus a team that runs the day-to-day. Smaller teams get managed IT and security operations; larger ones get senior CIO, CTO, and CISO-level ... read GSD reviews & insights
< $25/hr2 - 92023California City, United StatesWhy GSD?
- Senior IT leadership, without the full-time hire.
- Built for mission-driven work, not generic IT.
- Security and compliance handled, budget respected.
OneLogin is a cloud-based Identity and Access Management (IAM) platform that helps organizations securely manage user identities and control access to business applications, systems, and data. Originally founded in 2009, OneLogin provides a centralized solution for authentication, authorization, and user lifecycle management. It is designed to simplify employee access to both cloud and on-premises applications ... read OneLogin reviews & insights
$50 - $99/hr250 - 9992009San Francisco, United StatesBizzSecure provides the most effective Cyber Security services. We understand the importance of IT Compliance risk assessment services for your business and effectively implement compliance risk management for you. With the most competent EAID: next Generation GRC Solutions, you can rest assured about the security of your company's network entirely. We focus on the key ... read Bizz Secure reviews & insights
NA050 - 249Fremont, United StatesCustomized business technology solutions & managed IT services w/ cybersecurity, IT disaster recovery, & cloud networking in Los Angeles.
NA10 - 49Los Angeles, United StatesFuture Age Technologies offers each and every client customized & comprehensive services that will empower your company - no matter your industry, your company goals, or your location. We offer a wide range of Managed IT Solutions, IT Support, IT Outsourcing, Cybersecurity, vCIO Services, IT Consulting, IT Compliance, Infrastructure Management, Cloud Solutions, (VoIP) Phone Solutions, ... read Future Age Technologies reviews & insights
NA2 - 92020Arcadia, United StatesKong acts as a sophisticated "smart receptionist" for your company's software, sitting between external users and your internal systems to manage communication. Its primary job is to handle security by verifying user credentials, traffic control through rate limiting to prevent server crashes, and routing to ensure requests reach the correct destination. Beyond these basics, it ... read Kong reviews & insights
$50 - $99/hr250 - 9992017San Francisco, United StatesWhy Kong?
- An unified platform for API management and AI
- Built into Kongs AI Gateway
- Robust Staff Integrated to take your tasks upscale
Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster. Postman started simply as a side project to solve a specific problem: Abhinav Asthana, Postman's CEO and co-founder, set out to create a tool that would simplify the ... read Postman reviews & insights
$100 - $149/hr250 - 9992014San Francisco, United StatesWhy Postman?
- Proven results and data-driven strategies
- Experienced and dedicated team
- Transparent communication and reporting
Headquartered in Nashville, Tennessee, InStream helps organizations improve efficiency through intelligent business processes and customized solutions. InStream provides solutions for workflow automation, technical and IT project management, process automation, outsourced transactional processing, cloud document management, and more.
< $25/hr2 - 9Los Angeles, United StatesChoice Communications was founded in 1995 on the principle of providing the highest level of service to our customers. Our goal is to streamline and simplify the acquisition of communications services, acting as a unified resource for all carrier quotes, order processing, provisioning, and project management.
< $25/hr10 - 491995San Jose, United StatesHere at Deloitte, we are continuously evolving how we work and how we look at marketplace challenges so we can continue to deliver measurable, sustainable results for our clients and our communities.
< $25/hr50 - 2492001San Diego, United StatesSmall businesses who require fast access to technical help and believe in always on IT infrastructure, count on DCG. We exist to help clients choose and deploy reliable technologies that achieve worry free, "always on" cloud and premise based IT systems. Discover how our IT Consulting services can help protect your investment, solve business challenges, ... read DCG Technical Solutions reviews & insights
< $25/hr10 - 491993Los Angeles, United StatesUsing AI Tools
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AllSafe IT provides managed IT services, IT support, cybersecurity, and IT consulting for businesses across Los Angeles. We help organizations modernize their technology, strengthen cybersecurity, and reduce downtime through proactive IT management, cloud solutions, co-managed IT, and strategic technology planning. Our engineers work closely with businesses to build secure, scalable IT environments that improve operational ... read AllSafe IT reviews & insights
$150 - $199/hr10 - 492005Los Angeles, United StatesWhy AllSafe IT?
- Security-First Managed IT (Not an Add-on)
- Local engineers & on-site support available
- SOC 2 Compliant
Our team of experts can become your outsourced IT department responding to issues quickly, often before you even know about them. Covering everything from your servers and network infrastructure, to your computers, workstations and mobile devices, we provide end-to-end solutions for all of your technology needs.
< $25/hr2 - 92011Los Angeles, United StatesWelcome to Layer Seven’s home on Linkedin! Be sure to follow us for periodical updates on the latest Information Technology, Cloud Computing and Hosted VoIP trends as well as updates on blog articles, tips and Layer Seven news!
< $25/hr10 - 492002San Diego, United StatesOur team brings decades of collective experience & love for technology, enhancing our dedication to supporting small to mid-sized business growth. We prefer simple, streamlined solutions that enhance your experience and ensure your needs are fully supported. Our approach emphasizes proactive maintenance and disaster recovery planning, so you have fewer worries about downtime or falling ... read Simplified IT Consulting reviews & insights
$100 - $149/hr10 - 492015Woodland Hills, United StatesInitially, CRTG provided Apple certification training, troubleshooting and hardware installations. With the explosion of Apple products and services over recent years, CRTG added initiatives that met the new requirements of the ever-changing technological landscape. Russell Poucher is the CEO of Creative Resources Technology Group. He founded CRTG in 1996 to provide IT solutions for small ... read Creative Resources Technology Group reviews & insights
NA2 - 91996Costa Mesa, United StatesVertisystem is a business solutions company providing its clients with Cloud Technology and Staffing solutions, catering to diverse sectors like the IT, Bank, Entertainment, Hospitality, Casino Gaming, Social Media & Advertising, Manufacturing, E-Comm, Consumer Electronics & Healthcare. We serve several Fortune 500 companies, working in 4 continents and 6 time zones. With over 15 years ... read Vertisystem reviews & insights
< $25/hr250 - 9992007Fremont, United StatesXOverture is an award-winning managed IT services and consulting provider known for our top-tier service quality, industry-best response times, and consultative approach throughout the US and Canada. Our focus is to provide you with the IT you need to achieve your business goals. We take the time to understand your business and then build our ... read XO reviews & insights
NA10 - 491998Studio City, United StatesVelocity Media Lab is the digital marketing agency based in Sacramento which offers various customized services like SEO ,SEM ,SMM ,email marketing ,content marketing , mobile marketing at affordable rates. We offer and make use of the best technology in the industry to create authentic products and meet the expectation of the clients.We have a ... read Velocity Media Lab reviews & insights
NA10 - 49Sacramento, United States3DEX Inc., headquartered in California, USA, has been a trusted partner in software development and innovation for over two decades. Initially established to serve its own sister companies, 3DEX quickly expanded its offerings and client base, evolving into a comprehensive software solutions provider for the U.S. and global markets. With a strong presence in regions ... read 3 Dex reviews & insights
$100 - $149/hr10 - 492008Irvine, United StatesFounded in 2008, The iFish Group, Inc. (IFG) is a fast-growing information technology (IT) consulting firm headquartered in Sacramento, California serving both public and private sector clients. Over the past nine years, IFG has collaborated with clients in planning and delivering some of their most critical IT projects, partnering with them to develop effective approaches ... read The iFish Group reviews & insights
$50 - $99/hr10 - 492008Sacramento, United StatesFantasy is a world-renowned UX design studio with a mission to impact the user experience in every-day products through human-centered design and innovation. Founded in 1999, we are a privately held company and the preferred design partner for fortune 200 companies. Our talented team of designers, developers, and strategists collaborate seamlessly to deliver groundbreaking solutions ... read Fantasy reviews & insights
$25 - $49/hr50 - 2491999San Francisco, United StatesContrast Security is the world’s leading provider of security technology that enables software applications to protect themselves against cyberattacks, heralding the new era of self-protecting software. Contrast's patented deep security instrumentation is the breakthrough technology that enables highly accurate assessment and always-on protection of an entire application portfolio, without disruptive scanning or expensive security experts.
$25 - $49/hr50 - 2492014Los Altos, United StatesNetApp is the data authority for hybrid cloud. We provide a full range of hybrid cloud data services that simplify management of applications and data across cloud and on-premises environments to accelerate digital transformation. Together with our partners, we empower global organizations to unleash the full potential of their data to expand customer touchpoints, foster ... read Net App reviews & insights
$300+/hr10000+1992Sunnyvale, United StatesWhether you want to fully outsource your IT, or you want to augment the capabilities of your internal IT staff, we’re here to help! Accent Computer Solutions has been providing heroic IT Services to the business community since 1987. Founded by Marty Kaufman, Accent offers their clients a unique blend of customer service and proactive ... read Accent Computer Solutions reviews & insights
$150 - $199/hr50 - 2491987Rancho Cucamonga, United StatesAperio IT is dedicated to keeping your technology investment up and running smoothly so your organization can focus on day-to-day business. Your management team can relax knowing our partnership with your organization means we take your organizations IT personally, and strive to keep your end-users productive with the tools they need to drive your organization ... read Aperio IT reviews & insights
$50 - $99/hr10 - 492000Sacramento, United StatesCeniom specializes in wide range of services, including tailored IT services and solutions for small and medium businesses and their owners in Sacramento. We are committed to providing each and every one of our clients with high quality service and support. Our unique IT team is incredibly friendly and can help you every step of ... read Ceniom, Inc. reviews & insights
$25 - $49/hr2 - 92004Sacramento, United StatesWhen other network support companies put you on hold, KLH Consulting puts you first. Our world-class customer service and unique partnership approach are a step above the rest, with proactive, personalized network solutions that minimize downtime and maximize productivity. KLH has been supporting the needs of businesses in the Northbay for nearly 30 years and ... read KLH Consulting reviews & insights
$150 - $199/hr50 - 2491980Santa Rosa, United StatesSemantic AI is leveraging cutting-edge computational performance to connect, add value to, and present data and information in ways that augment how human analysts rapidly build understanding and form better decisions. With our deep background in knowledge transfer, Semantic AI has always focused on making humans, not machines, smarter. Powered by a context engine, our ... read Semantic AI reviews & insights
NA50 - 2492001San Diego, United StatesBridge helps technology companies open a remote R&D office and hire software engineers locally. Unlike outsourcing vendors, who "rent" developers to build software projects, with Bridge you can build your own team and don't depend on third-parties. We open, staff, and manage your remote office keeping your expenses crystal clear, and saving you up to ... read Bridge, Inc reviews & insights
NA50 - 2492019San Francisco, United StatesCre8tive Technology and Design’s fundamental goal is to increase your bottom line through operational adjustments and improvements by utilizing the best business systems technology on the market. Our groomed strategists define your goals and current processes to come up with a tailored software solution that meets all of the needs required to move your business ... read Cre8tive Technology and Design reviews & insights
< $25/hr50 - 2492005San Diego, United StatesAt Winggs, we deliver complete IT solutions designed to help businesses grow, scale, and succeed in the digital world. From modern website development to powerful digital marketing strategies, we provide end-to-end services tailored to your business needs. Our team focuses on creating fast, user-friendly, and result-driven solutions that not only look great but also perform. ... read Wing Global IT Services Pvt. Ltd. reviews & insights
NA10 - 492017Fresno, United StatesWhy Wing Global IT Services Pvt. Ltd.?
- Complete IT solutions under one roof for business
- Customized solutions tailored to your business goa
- Modern technology for fast secure scalable solutio
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The Magical Quadrant
Hover any bubble for the firm's exact scores. Filter the view using the controls on the right.
The four quadrants explained
Each card shows the count of firms in that quadrant and the top 5 by composite score.
Strong execution but broader service mix. High-quality generalists - good fit if your project crosses multiple disciplines in one engagement.
Deeply specialised but with moderate market presence. Often the right pick when specialisation matters more than scale - boutique shops with deep technical chops.
Newer entrants and smaller boutiques. Higher risk but often the best price-performance - particularly for early-stage startups or non-mission-critical projects.
The 4 highest-scoring firms in the Industry Leaders quadrant. Each has both Core Competencies and 360-Performance ≥ 50. Click any card for the full profile.
How firms are placed on the matrix
Every position on this chart is the output of the Goodfirms ranking algorithm - a weighted composite of signals across two axes. The algorithm is recomputed regularly and is fully documented.
Sponsorship does not affect placement. PRO members receive visible badges and ad placements, but their algorithmic scores are calculated identically to free listings.
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