Top 100 Systems Integrator Companies in California

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Top 100 Systems Integrator Companies in California

The Best of October 2026
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List of the Best California System Integrators

  • 1621

    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    Irvine, CA
    In Kirkland, Washington and Irvine, California, Covestic is an IT managed services company. Launched in 2001, the team offers IT managed services and cloud consulting & SI.
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  • 1622

    (2 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $100,000+
    50 - 249 employees
    San Jose, CA
    Intagleo Systems is a midsize Slough, United Kingdom-based custom software development firm. Founded in 2004, the team focuses on custom software development, IT staff augmentation, mobile app development, web development, and more.
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  • 1623

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    El Segundo, CA
    CloudEQ is a midsize IT strategy consulting company based in Novi, Michigan and El Segundo, California. The team provides IT strategy consulting and cloud consulting & SI.
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  • 1624

    (6 Reviews) 5.0

    Timeliness

    4.9

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    50 - 249 employees
    Laguna Niguel, CA
    Midsize custom software development firm MeGaDev, is in Alicante (Alacant), Spain; Kharkiv, Ukraine; Rīga, Latvia and Zug, Switzerland. They focus on Custom Software Development, Artificial Intelligence, ERP consulting and SI, Web Development, and more and were established in 2017.
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    Clients

    Talentum

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  • 1625

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Los Angeles, CA
    Saguaro Technology, a cloud consulting & SI company, was established in 1999. The midsize team offers cloud consulting & SI and Custom Software Development.
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  • 1626

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    Escondido, CA
    Prakat Solutions, a data analytics company, was established in 2009. The agency offers BI & big data consulting & SI and cloud consulting & SI.
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  • 1627

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Santa Clara, CA
    In Santa Clara, California and Islamabad, Pakistan, Emumba is an UX design company. The team offers UX/UI Design and BI & big data consulting & SI.
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  • 1628

    (11 Reviews) 4.7

    Timeliness

    4.1

    Service Excellence

    4.6

    Value

    4.4

    Would Recommend

    4.7
    $25,000+
    250 - 999 employees
    San Francisco, CA
    Innovecs, a software development firm, is based in New York, New York; Kyiv, Ukraine; San Francisco, California and Tel Aviv-Jaffa, Israel. Launched in 2011, the midsize team offers Custom Software Development, DevOps Managed Services, BI & big data consulting & SI, cloud consulting & SI, and more.
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    Clients

    SGN

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  • 1629

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    San Jose, CA
    Established in 1980, Edvenswa Enterprises is a midsize mobile app development company. Their team offers Mobile App Development and Robotics Process Automation.
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  • 1630

    (0 Reviews)

    Not yet reviewed.

    $25,000+
    250 - 999 employees
    Mountain View, CA
    PRIJBS is a midsize IT staff augmentation company. They provide IT staff augmentation and IT strategy consulting and were established in 1997.
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  • 1631

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    San Jose, CA
    Xebrium Inc, a midsize custom software development firm, is located in San Jose, California and Pune, India. Their services include Custom Software Development and Enterprise App Modernization.
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  • 1632

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    Ramona, CA
    C3IT Solutions is a midsize Ramona, California-based AI firm. The team offers Artificial Intelligence and Robotics Process Automation.
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  • 1633

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    Santa Clarita, CA
    InfyStrat Software Services is an IoT development company. The Santa Clarita, California-based agency was established in 2015. Their services include IoT development and Artificial Intelligence.
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  • 1634

    (0 Reviews)

    Not yet reviewed.

    $25,000+
    1,000 - 9,999 employees
    Calabasas, CA
    Prolifics is an ECM consulting and SI company. Launched in 1978, the team focuses on ECM consulting and SI and unified communications consulting & SI.
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  • 1635

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Redlands, CA
    CyberTech Systems and Software, Inc is a Cybersecurity company. They offer Cybersecurity and ERP consulting and SI and are located in Oak Brook, Illinois and Redlands, California.
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  • 1636

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Santa Clara, CA
    Tatvic is a business intelligence company. The midsize Ahmedabad, India-based team specializes in BI & big data consulting & SI and Conversion Optimization. The firm was founded in 2009.
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  • 1637

    (0 Reviews)

    Not yet reviewed.

    $5,000+
    250 - 999 employees
    Redwood City, CA
    Equinix EMEA, an IT managed services company, focus on IT managed services and IT strategy consulting. They were established in 1998.
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  • 1638

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Palo Alto, CA
    Dialog Information Technology is a CRM consulting and SI company. Founded in 1979, the agency provides CRM consulting and SI and ECM consulting and SI.
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    Clients

    National Australia Bank

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  • 1639

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    Fremont, CA
    Input Zero Technologies Pvt. Ltd. Is an IT strategy consulting company. The Fremont, California-based company focuses on IT strategy consulting and cloud consulting & SI.
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  • 1640

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    1,000 - 9,999 employees
    San Ramon, CA
    Nous Infosystems, an Application Testing company, was founded in 1996. The large team focuses on Application Testing and Custom Software Development.
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  • 1641

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    1,000 - 9,999 employees
    Redwood City, CA
    Informatica is a CRM consulting and SI company based in Redwood City, California and Austin, Texas. They focus on CRM consulting and SI and ERP consulting and SI.
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  • 1642

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Dublin, CA
    Bhavna Corp. Is a Noida, India-based application development firm. Their services include Mobile App Development and DevOps Managed Services.
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  • 1643

    (0 Reviews)

    Not yet reviewed.

    $1,000+
    10,000+ employees
    El Segundo, CA
    Founded in 1999, FPT Software, a large Digital Strategy company, is in El Segundo, California and Hanoi, Vietnam. Their team focuses on Digital Strategy and cloud consulting & SI.
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  • 1644

    (6 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    Undisclosed
    10 - 49 employees
    Los Angeles, CA

    IT managed services company Los Angeles IT was founded in 2016. The firm provides IT managed services, Search Engine Optimization, BI & big data consulting & SI, cloud consulting & SI, and more and has a small team. The firm is in Los Angeles, California; Santa Monica, California; Los Angeles, California and Los Angeles, California.

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