Top 100 Application Modernization Companies in London

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Top 100 Application Modernization Companies in London

The Best of November 2026

Looking for a top legacy modernization service in London?

Application modernization companies can help create new business value from existing applications. Finding the right company to partner with, however, can be an overwhelming process. 

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List of the Best London Enterprise Application Modernization Services

  • 61

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    London, England
    Zemoso Technologies is a Farmers Branch, Texas-based software development firm. The team specializes in Custom Software Development and Enterprise App Modernization.
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  • 62

    (6 Reviews) 4.9

    Timeliness

    4.5

    Service Excellence

    4.8

    Value

    4.3

    Would Recommend

    5.0
    $5,000+
    50 - 249 employees
    London, England
    Box UK, a custom software development firm, was launched in 1998. The agency provides Custom Software Development, Enterprise App Modernization, Web Development, UX/UI Design, and more and has a midsize team.
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    Clients

    OKdo.com

    Industries

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  • 63

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    London, England
    Founded in 2025, Paradym Partners is an Enterprise App Modernization company. The team provides Enterprise App Modernization and Artificial Intelligence.
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  • 64

    (1 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $10,000+
    50 - 249 employees
    Romford, England
    Genius Logix is a software development firm based in Romford, England and Austin, Texas. The midsize agency was established in 2023. Their team offers Custom Software Development, ERP consulting and SI, Enterprise App Modernization, IT managed services, and more.
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    Clients

    Versatel Germany Loopwise Speedy Wash

    Industries

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  • 65

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    London, England
    Codurance Ltd, a custom software development company, was launched in 2013. They offers Custom Software Development and Enterprise App Modernization.
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    Industries

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  • 66

    (0 Reviews)

    Not yet reviewed.

    $10,000+
    250 - 999 employees
    London, England
    Founded in 2006, On Tap is an e-commerce development firm. The team focuses on E-Commerce Development and Enterprise App Modernization.
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  • 67

    (0 Reviews)

    Not yet reviewed.

    $10,000+
    2 - 9 employees
    London, England
    Volt X is a custom software development company and Enterprise App Modernization company. The team offers Custom Software Development and Enterprise App Modernization and is based in London, England.
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  • 68

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    1,000 - 9,999 employees
    London, England
    Version 1, a custom software development company, was launched in 1996. The team specializes in Custom Software Development and Application Management & Support.
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    Industries

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  • 69

    (0 Reviews)

    Not yet reviewed.

    $25,000+
    250 - 999 employees
    London, England
    Pythian is a business intelligence company in Ottawa, Canada and San Francisco, California. They specialize in BI & big data consulting & SI and cloud consulting & SI and were launched in 1997.
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    Clients

    Fox Sports

    Industries

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  • 70

    (0 Reviews)

    Not yet reviewed.

    $25,000+
    1,000 - 9,999 employees
    Harrow, England
    IT strategy consulting company Changepond Technologies Private Limited was established in 2000. The agency specializes in IT strategy consulting and IT managed services.
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    Industries

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  • 71

    (0 Reviews)

    Not yet reviewed.

    $1,000+
    50 - 249 employees
    London, England
    Quantum-h is a software development company launched in 2019. The firm provides Custom Software Development and Web Development.
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  • 72

    (0 Reviews)

    Not yet reviewed.

    $50,000+
    50 - 249 employees
    London, England
    Yozu is a midsize custom software development firm founded in 2013. Their team focuses on Custom Software Development and Mobile App Development.
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    Industries

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  • 73

    (0 Reviews)

    Not yet reviewed.

    $10,000+
    50 - 249 employees
    London, England
    Digiata is a custom software development firm founded in 2001. The firm offers Custom Software Development and Enterprise App Modernization.
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    Clients

    Vitality Discovery Insurance Allan Gray Old Mutual

    Industries

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  • 74

    (0 Reviews)

    Not yet reviewed.

    $75,000+
    50 - 249 employees
    london, England
    Gravity9, a midsize custom software development firm, is located in Birmingham, England and london, England. The team offers Custom Software Development and Enterprise App Modernization.
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    Industries

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  • 75

    (0 Reviews)

    Not yet reviewed.

    $100,000+
    50 - 249 employees
    London, England
    Montenegro Systems is a custom software development firm founded in 2022. Their services include Custom Software Development and Artificial Intelligence.
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    Industries

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  • 76

    (0 Reviews)

    Not yet reviewed.

    $10,000+
    10 - 49 employees
    London, England
    Headquartered in London, England, Lolly Co is a small Enterprise App Modernization company. The team specializes in Enterprise App Modernization and Digital Strategy.
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    Industries

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  • 77

    (0 Reviews)

    Not yet reviewed.

    $100,000+
    10 - 49 employees
    London, England
    Launched in 2018, Focused is a small custom software development firm based in Chicago, Illinois and Denver, Colorado. Their team offers Custom Software Development and Mobile App Development.
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    Industries

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  • 78

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    London, England
    Established in 2012, LiveWyer is an IT strategy consulting company. The team offers IT strategy consulting and cloud consulting & SI.
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  • 79

    (0 Reviews)

    Not yet reviewed.

    $5,000+
    2 - 9 employees
    London, England
    Code Development Ltd. Is a custom software development firm. The London, England-based company provides Custom Software Development and Application Testing.
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  • 80

    (3 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    4.8

    Value

    4.8

    Would Recommend

    4.7
    $25,000+
    10 - 49 employees
    London, England
    Custom software development firm DEVITGROUP LTD was launched in 2020. They are headquartered in London, England and have a small team. DEVITGROUP LTD focuses on Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more.
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    Industries

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  • 81

    (0 Reviews)

    Not yet reviewed.

    $10,000+
    50 - 249 employees
    London, England
    Invenics is a software development firm launched in 2017. Located in London, England and Ernakulam, India, the team provides Custom Software Development and Web Development.
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    Industries

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  • 82

    (0 Reviews)

    Not yet reviewed.

    $50,000+
    10 - 49 employees
    London, England
    Digital Detox Ltd is a small custom software development firm founded in 2004. Their services include Custom Software Development and Web Design.
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  • 83

    (0 Reviews)

    Not yet reviewed.

    $25,000+
    50 - 249 employees
    Brentford, England
    Mobile application development company Oursky is based in Kowloon, Hong Kong and Taipei, Taiwan. Launched in 2008, the team focuses on Mobile App Development and Artificial Intelligence.
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  • 84

    (0 Reviews)

    Not yet reviewed.

    $10,000+
    10 - 49 employees
    London, England
    E-done is an app development firm established in 2017. Based in Zaporizhzhia, Ukraine and New York, New York, the team offers Mobile App Development and Blockchain.
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    Industries

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  • 85

    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    London, England
    Solvership is a business intelligence company established in 2001. Based in Zagreb, Croatia and London, England, the team provides BI & big data consulting & SI and other IT consulting and SI.
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    Industries

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  • 86

    (4 Reviews) 4.8

    Timeliness

    4.4

    Service Excellence

    4.9

    Value

    4.8

    Would Recommend

    5.0
    $5,000+
    10 - 49 employees
    Chobham, England

    Custom software development company Blue Tea Software - London is located in Chobham, United Kingdom. The small team provides custom software development, web development, mobile app development, and enterprise app modernization. The firm was founded in 2014.

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    Clients

    R;pple Suicide Prevention

    Industries

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  • 87

    (0 Reviews)

    Not yet reviewed.

    $1,000+
    50 - 249 employees
    London, England
    Custom software development company Hardcastle GIS was launched in 2011. The team provides Custom Software Development and Application Testing.
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  • 88

    (0 Reviews)

    Not yet reviewed.

    $25,000+
    50 - 249 employees
    London, England
    Codeboard Technology is a Chennai, India-based Low/No Code Development company. The team focuses on Low/No Code Development and Artificial Intelligence.
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    Industries

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  • 89

    (0 Reviews)

    Not yet reviewed.

    $10,000+
    10 - 49 employees
    London, England
    Peru Consulting Ltd is an Enterprise App Modernization company. They offer Enterprise App Modernization and BI & big data consulting & SI and were founded in 2012.
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    Industries

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  • 90

    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    London, England
    Enterprise App Modernization company Camwood Ltd. Offers Enterprise App Modernization and cloud consulting & SI. They are headquartered in London, England.
    Read More

    Industries

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