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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In 2008, Smile Global was founded with a simple yet powerful belief: every organization, no matter its size, deserves enterprise-level IT consulting and support at an affordable cost. We saw the challenges that non-profits and small to mid-size businesses faced with technology and knew there was a better way.From Local Startup to National IT Leader ... read Smile Global reviews & insights
$150 - $199/hr10 - 492008Ventura, United StatesWhy Smile Global?
- Decades experience handling complex IT networks
- Customer First ApproachA team that genuinely cares
- Cutting-edge technology tailored to your needs
We're a passionate team of designers, writers, strategists, developers, and account specialists who share a common passion for great design. Together we create extraordinary brand experiences that help companies establish their voice and elevate their brands. Our work is renowned for its highly-crafted design and ... read American Web Designers Inc reviews & insights
$50 - $99/hr250 - 9992007Sacramento, United StatesHad An Exceptional Experience Working With American Web Designers Inc.
- Phillip StanleyWith more than 5 years of expertise in eCommerce business under our belt, our full-scale Magento ecommerce agency is capable of delivering a comprehensive service that takes complete care of the client’s Magento infrastructure. - No automated digital services. - No single set of rules. ... read Mavitech reviews & insights
$25 - $49/hr10 - 492015Pasadena, United StatesMagento e-commerce solution.
- Founder & CEOSymantec Corporation the world’s leading cyber security company, helps organizations, governments and people secure their most important data wherever it lives. Organizations across the world look to Symantec for strategic, integrated solutions to defend against sophisticated attacks across endpoints, cloud and infrastructure.
$100 - $149/hr10000+1982Mountain View, United StatesCheck Point Software Technologies Ltd. is the largest network cybersecurity vendor globally, providing industry-leading solutions and protecting customers from cyber attacks with an unmatched catch rate of malware and other types of threats. Check Point offers a complete security architecture defending enterprises – from networks to mobile devices – in addition to the most comprehensive ... read Check Point Software Technologies reviews & insights
$50 - $99/hr10000+1993San Carlos, United StatesSynoptek is the world’s first IT Managed Experience Provider (MxP™) and a global business and digital technology solutions firm helping organizations modernize, scale, and operate with confidence. As a Managed Experience Provider, Synoptek goes beyond traditional IT services to deliver AI-enabled automation, experience-led transformation, and measurable business outcomes. Synoptek’s capabilities span four core service pillars: ... read Synoptek reviews & insights
$150 - $199/hr1,000 - 9,9992001Costa Mesa, United StatesWhy Synoptek?
- Outcome-driven IT & business transformation
- AI-enabled automation & innovation
- Global delivery with deep technical expertise
Abtech was founded in 1989 in San Diego, California, specializing in the supply of parts for H9000 servers and workstations. Over the years, the company has grown and diversified and is now a nationwide IT services and solutions company offering a wide range of IT products and services.
$50 - $99/hr50 - 2491989Carlsbad, United StatesTVG Consulting provides a one-stop IT Consulting solution for companies with 10-150 employees demanding their network and systems to be "always on and available" . TVG includes a US/Southern California staffed HelpDesk with experienced and certified engineers and support personnel ready to support all types of businesses.
$25 - $49/hr2 - 92005Burbank, United StatesFortinet secures the largest enterprise, service provider, and government organizations around the world. Fortinet empowers its customers with intelligent, seamless protection across the expanding attack surface and the power to take on ever-increasing performance requirements of the borderless network - today and into the future.
$50 - $99/hr1,000 - 9,9992000Sunnyvale, United StatesFortis is a Sacramento Area provider of managed IT services, hosted VoIP, and high speed, redundant internet. We're dedicated to taking the hassle out of managing business technology.
< $25/hr10 - 492005El dorado Hills, United StatesAs a leading provider of managed IT services, offering dedicated IT support to businesses in the Sacramento region, Raptor IT Consultants has obtained numerous awards for the quality of our IT services and dedicatation to customer service in the community. We're dedicated to offering affordable managed IT services and IT consulting with a dedicated IT ... read Raptor IT Consultants reviews & insights
< $25/hr2 - 92017Sacramento, United StatesAdvanced IT, one of the leading IT Outsourcing Company established in 2003 in Santa Clara CA provides Information Technology Services that cost-effectively meet your business demands today. We rapidly implement enterprise solutions to turn your business vision into practical reality. Considered as one of the Best IT Solutions Provider Companies in Sacramento, California, our mission ... read Advanced IT reviews & insights
< $25/hr2 - 92003Rocklin, United StatesVoiso is a SaaS call center solution with its own telecom infrastructure supported by 12 PoPs worldwide. With advanced historical reporting and real-time monitoring features, Voiso can streamline operations for outbound, inbound, and blended call centers. Intuitive interface and flexible functionality make Voiso suitable for practically any use case.For outbound sales, Voiso enforces abandonment ratios, ... read Voiso reviews & insights
NA50 - 2492016Los Angeles, United StatesEPIQ Infotech is a trusted NetSuite Solution Provider in the UAE, delivering end-to-end NetSuite services for growing and enterprise-level businesses. As an experienced NetSuite implementation partner, EPIQ helps organizations plan, deploy, and optimize NetSuite ERP to strengthen financial control, improve operational visibility, and support scalable growth across the region. EPIQ specializes in NetSuite implementation, integration, ... read EPIQ Infotech reviews & insights
NA50 - 2492013Richmond, United StatesLos Angeles IT provides a comprehensive range of services to meet the diverse needs of modern businesses. Our managed IT services offer ongoing management of IT infrastructure, including monitoring, maintenance, and support for networks, servers, and end-user devices, ensuring that systems operate smoothly and efficiently. We specialize in network management, covering the design, setup, and ... read Los Angeles IT - Managed IT Services reviews & insights
$50 - $99/hr2 - 92000Los Angeles, United StatesCode Driven Labs, our journey is rooted in a simple yet powerful objective: to make technology accessible and effortless for everyone. Founded with a passion for innovation and a commitment to simplifying the intricate world of tech, we have become a trusted name in the IT industry. Our unwavering dedication to this mission has led ... read Code Driven Labs reviews & insights
$25 - $49/hr10 - 492021San Francisco, United StatesTRM Labs is a blockchain intelligence company that helps financial institutions, crypto businesses, and government agencies detect and investigate crypto-related financial crime and fraud. Every day, we tackle challenges in data engineering, data science, and threat intelligence to advance our mission to build a safer financial system for billions of people.
$50 - $99/hr250 - 9992018San Francisco, United StatesWhy TRM Labs?
- On-time delivery and reliable support
- Affordable pricing with high quality
- Strong focus on client satisfaction
Webmob Technologies is a global leader in custom web and app development, offering consulting and development services to businesses of all sizes - from startups to mid-sized organizations to enterprises. Our custom web and app development expertise has earned us top reviews & a prominent ... read WebMob Technologies reviews & insights
< $25/hr50 - 2492010San Jose, United StatesNot good
- Managing DirectorUsing AI Tools
GitHub Copilot
Since 1981, PC Professional has helped Bay Area businesses and nonprofits use technology with confidence. With 45+ years of experience, 300+ clients, and 1,000+ completed projects, we deliver Managed IT, Cybersecurity, AI Solutions, Cloud Services, Disaster Recovery, and IT Consulting. Our Oakland-based team of 20+ engineers, supported by 6 live IT support helpdesk specialists and ... read PC Professional reviews & insights
NA10 - 491981Oakland, United StatesWhy PC Professional?
- No Long-Term Contracts
- Scalable, Cost-Effective Solutions
- 15 Minute Response Time
We are an IT outsourcing and software development company with more than 10 years of experience in connecting you with a pool of prevetted global talent. Our network is made up of experts in recruiting and workforce solutions across technologies and engineering. Advancio’s industry expertise and full-service capabilities in dedicated teams and project-based solutions in ... read Advancio reviews & insights
$50 - $99/hr50 - 2492010Valencia, United StatesCA Veracode’s automated security tools deliver fast, repeatable and actionable results, without the noise of false positives. Our tools integrate into existing development toolchains, enabling you to quickly identify and remediate security flaws early in your process—without adding needless steps to the software lifecycle, so you can continue creating high-quality and secure software.
< $25/hr10000+1976Santa Clara, United StatesFounded in 1999 as one of the first SaaS security companies, Qualys has established strategic partnerships with leading managed service providers and consulting organizations including Accenture, BT, Cognizant Technology Solutions, Deutsche Telekom, Fujitsu, HCL Technologies, HP Enterprise, IBM, Infosys, NTT, Optiv, SecureWorks, Tata Communications, Verizon and Wipro. The company is also a founding member of ... read Qualys reviews & insights
< $25/hr250 - 9991999Foster City, United StatesProficio is a world-class Managed Security Service Provider (MSSP) providing managed detection and response solutions, 24×7 security monitoring and advanced data breach prevention services to organizations globally.
$25 - $49/hr50 - 2492010Carlsbad, United StatesHIPAA Vault is a leading provider of HIPAA compliant cloud solutions, enabling healthcare providers, business organizations, and government agencies to secure their protected health information from data breaches, threats, and security vulnerabilities. At the core of HIPAA Vault’s business is the managed solutions architecture that is included with every product and service. Advanced security measures ... read HIPAA Vault reviews & insights
NA10 - 491997San Diego, United StatesFor 30 years now, AOCUSA has been on the frontline of developing software and providing technical support for everyday small and large business alike. Starting off as a two man partnership, our team has grown over the years to provide reliable service to all our clients. No client is less important than another whether it ... read Alpha & Omega Computer Inc. reviews & insights
NA2 - 91987Hacienda Heights, United StatesWe at CyberTrust IT Solutions is delivering one of the best managed IT services in Orange County, which helps you in improving and simplifying your IT needs. We aim to serve fully managed IT services to small and mid-sized businesses by our best IT services, including IT, support, IT consulting, cybersecurity, cloud computing, data backup ... read CyberTrust IT Solutions reviews & insights
NA10 - 491996Lake Forest, United StatesUsing AI Tools
Gemini
Fusion Factor Corporation is an award-winning IT Services provider based in San Diego County. The organization specializes in managed IT services, cybersecurity, cloud solutions, and disaster recovery; we deliver 24/7 in-house support. Our expertise is 24/7 support and quick response within 1 hour, making us one of the best. The organization is recognized by CRN ... read Fusion Factor reviews & insights
NA10 - 492005San Diego, United StatesWhy Fusion Factor?
- Proactive system monitoring & maintenance
- Network security & compliance
- Strategic IT consulting
CompuOne is a woman / veteran-owned, IT services provider in San Diego, CA. We opened our doors in 1997 with the goal of becoming a technology solution provider centered around our core values: Customer Service, Quality, Integrity, Honesty, and Respect. Our vision is to develop reliable IT solutions essential to our clients’ needs, and apply ... read CompuOne reviews & insights
< $25/hr10 - 491997San Diego, United StatesGlobal IT Services primarily provides staff augmentation solutions across the most critical IT services and skills that are required. We are also an information technology service company providing system design, development and deployment of applications across multiple industry sectors, ranging from government entities to healthcare providers to private businesses. We leverage a diverse scope of ... read Global IT Services reviews & insights
< $25/hr10 - 492011Sacramento, United StatesFor over 15 years, Adept Solutions has been helping local companies leverage technology to reach their business goals faster, smarter and within budget. Our focus is on growth, with the right technology solutions at the right time.
< $25/hr2 - 92004Yuba City, United StatesStarted in 2003, Pacific Computer Consultants is a complete technology solution provider. We are 100% committed to making sure business owners have the most reliable and professional IT service in the San Francisco East Bay Area. Our team of talented IT professionals can solve your IT nightmares once and for all.
< $25/hr2 - 92003Concord, United StatesHassle-Free Computer Network and Repair Services for Small and Mid-Size Businesses in the greater San Francisco Bay Area as well as Santa Cruz and Monterey Counties.
< $25/hr2 - 92002San Jose, United StatesUnity Networking understands the hurdles that small and medium-sized business owners face on a day to day basis. Our goal is to help you overcome some of those hurdles by providing IT solutions that meet your business objectives. We understand that in order for us to be successful, you need to be successful. The only ... read Unity Networking reviews & insights
< $25/hr2 - 9Orangevale, United StatesTechMD is an award-winning IT solutions firm that specializes in cloud solutions, managed cybersecurity services, strategic IT consulting, and managed IT services. We are passionate about bringing enterprise-level productivity, scalability, and security to small and medium businesses.
$25 - $49/hr50 - 2492003Santa Ana, United StatesFicstar’s story began in 2005 when a team of passionate believers decided that the latest internet technologies could be used to automate the process of archiving all dynamic content from the internet. We knew we were on to something – the ability to provide a complete data solution that would relieve businesses of the overwhelming ... read Ficstar reviews & insights
< $25/hr2 - 9San Francisco, United StatesKofax’s Intelligent Automation software platform helps organizations transform information-intensive business processes, reduce manual work and errors, minimize costs, and improve customer engagement. We combine RPA, cognitive capture, process orchestration, mobility and engagement, and analytics to ease implementations and deliver dramatic results that mitigate compliance risk and increase competitiveness, growth and profitability. For more information, visit ... read Kofax reviews & insights
< $25/hr2 - 91985Irvine, United StatesHitech is one of the top BPO companies in India, founded in 1992, that provides valuable business process outsourcing solutions to small and medium businesses across the globe. Our vision is to help our clients to improve efficiency and profitability by letting them the full benefits of partnering with an offshore outsourcing company.
< $25/hr2 - 91992Santa Clara, United StatesAltezzaSys is a AWS , Microsoft & SAP Partner & CMM Level 3 Global Consulting & HR Solutions services provider with a team of 260+ resources with offices in some major cities of the world ,that delivers value and competitive advantage to its customers by improving their access to critical information, automating their business processes, ... read Altezzasys Systems Pvt Ltd reviews & insights
NA250 - 9992014Sunnyvale, United StatesFridell Technical Solutions is a Managed IT Services provider based in San Diego, California. We empower businesses to get more return from their investment in technology. We deliver IT-related business solutions to different organizations that are investing or planning to invest in Information Technologies, Managed Services to grow their business online. We will first learn ... read Fridell Technical Solutions reviews & insights
NA2 - 92011Escondido, United StatesAll of our calls are answered live. The average amount of time it takes for one of our clients to get on the phone with a technician who can start working on resolving their problem is 30 minutes. We know you’re busy and have made a sincere commitment to making sure your computer problems get ... read Biztek Solutions reviews & insights
NA10 - 49Riverside, United States"We are certain in putting attention on long term commitment to our valuable customers. We possess key solutions to run and guide your business growth in every level."
NA10 - 49Los Angeles, United StatesCaptain IT is a local IT firm that specializes in providing "Instant Peace of Mind I.T. Services" to business owners in the Riverside and San Bernardino counties. Our core services include flat-fee Managed IT Services, Data Backup & Recovery, Cloud Computing and VoIP Phone Systems. Captain IT is a company that was born from the ... read Captain IT reviews & insights
< $25/hr2 - 9Riverside, United StatesIn these unprecedented times, we feel that one of the best things we can do to make a difference for local businesses is to offer a little guidance. Business leaders need fast, concrete, prescriptive suggestions and solutions so that their companies can continue to be successful and survive this current situation. As such, we have ... read Sagacent Technologies reviews & insights
< $25/hr2 - 92000San Jose, United StatesDigital Mountain, Inc. is a leading global provider of electronic discovery, computer forensics, cybersecurity and data analytics services.
NA50 - 2492003Santa Clara, United StatesSaitech Inc is an innovative value-added supplier for information technology hardware, software, supply chain services to support cloud computing, data center management, data storage, rugged mobility devices, marine electronics, and office equipment. Saitech Inc provides a total solution to IT acquisitions by providing multi-vendor hardware and software along with significant pre-sale and post-sale services. We ... read Saitech, Inc reviews & insights
$25 - $49/hr10 - 492005Fremont, United StatesZybex® Medical Billing Services can help improve the efficiency of your business office. We understand the nuances of working with payers to collect on accounts, and use our accounting software to reduce the time you spend managing finances.Zybex® provides IT consulting, network solutions, and computer repair and maintenance. In addition to custom website and software ... read Zybex reviews & insights
NA10 - 491979San Diego, United StatesZeta Sky's mission, since it was founded, is to deliver secure, simple, and scalable IT solutions for businesses. Our specialty at Zeta Sky is cybersecurity. We’ve hosted many events since we began with a mixture of business owners and IT professionals – including experts from the FBI. With a niche focus on serving law firms, ... read Zeta Sky LLC reviews & insights
NA2 - 92014Rancho Cucamonga, United StatesOur solutions are designed to consider your current and future growth and most of all to be affordable and reliable. Our processes are honed to deliver what is promised and exceed your expectations and make sure all T’s are crossed and the I’s are doted. In today’s fast pace business environment responsiveness is the most ... read IT21ST, LLC reviews & insights
NA2 - 92015Los Angeles, United States
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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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