Top 100 Application Modernization Companies in London

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Top 100 Application Modernization Companies in London

September 2023

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

  • 1
    • Scheduling

      4.3
    • Quality

      4.7
    • Cost

      4.3
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $100,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom

    CI&T (formerly CINQ Technologies) is software development company based in Curitiba, Brazil with additional offices in Brazil and Miami. Founded in 1992, the team of 271 specializes in custom software development, IT staff augmentation, and UX/UI design. They work primarily with enterprise clients in the transportation and financial services industries.

    Clients

    • SITA
    • Lenovo
    • iHeart Media
    • Panasonic

    Industries

    Notable Project

    CI&T (formerly CINQ Technologies) is helping to develop custom software for a healthcare benefit plans administrator. Among their functions are project management, front and backend web development, and quality assurance.

    “They’ve matured and gelled together as a team — they’ve been as good as any team that can do that.”

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  • 2
    • Scheduling

      4.5
    • Quality

      4.7
    • Cost

      4.7
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $250,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom
    NashTech is a large London, United Kingdom-based software development company. Established in 2000, the team specializes in custom software development, IT strategy consulting, and application testing.

    Industries

    Notable Project

    NashTech rewrote one of the legacy apps of a global retail solutions firm using the latest technologies in the Google Cloud Platform. They gathered the client's requirements and redesigned the app from scratch.

    "We were impressed with their timely deliveries, good quality products, and very professional culture."

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  • 3
    • $25,000+
    • 50 - 249 employees
    • Croydon, United Kingdom

    Founded in 2005 and headquartered in Croydon, UK, GoodCore Software specializes in bespoke software development. WIth a team of about 50 employees, the company offers web and mobile app development to startups and established businesses alike. Engagement options include fixed- cost and dedicated development teams.

    Clients

    • Printed Music Licensing
    • Weight Loss Resources
    • GC Business Finance
    • XTracked Deliveries

    Industries

    Notable Project

    GoodCore developed a SaaS application for managing briefing programs and events for Fortune 100 companies. The team coded in React and Laravel for creating a web-based application. The application helped automate and streamline the management of corporate events, briefing programs and meetings.

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  • 4
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.7
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 250 - 999 employees
    • Borehamwood, United Kingdom

    Binmile Technologies is a leading digital strategy and product engineering company based in India with offices globally and was founded in 2017. They have more than 200 employees that provide custom software, app development, web and e-commerce development, and app testing services with market-leading solutions. They expertly steer clients across the globe as they navigate their digital transformation powered by the latest technologies.

    Clients

    • Indigo
    • Adani
    • Nanovest
    • Prodigi

    Industries

    Notable Project

    A SaaS company tapped Binmile to provide engineers to augment their internal development teams. The engineers help with multiple projects involving web and mobile app development and web maintenance.

    "They were very prompt in their responses and always available."

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  • 5
    • $25,000+
    • 250 - 999 employees
    • London, United Kingdom

    Altkom Software & Consulting, founded in 1998, is a software development company headquartered in Warsaw, Poland, with an additional office in Krakow, Poland. They specialize in custom software development, web development, and application management & support. The company has 130+ employees who work with enterprise, mid-market, and small businesses. The businesses they serve are mostly in the financial services industry. 
     

    Clients

    • BNP Paribas
    • AXA Insurance
    • Santander
    • Danone

    Industries

    Notable Project

    Altkom Software & Consulting provided IT consulting services for a private bank. They analyzed strategic business solutions and crucial IT deficiencies, evaluated potential risks, and proposed mitigation plans.

    "They worked fast and according to high market standards and solutions."

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  • 6
    • Scheduling

      3.9
    • Quality

      4.3
    • Cost

      4.5
    • NPS

      4.4
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 1,000 - 9,999 employees
    • London, United Kingdom

    Intive is a software development firm headquartered in Munich, Germany, with regional offices in the USA, UK, and France. Established in 1999, Intive is one of the most well-established global firms in IT solutions and product development; they have 782 employees. Intive offers development for web, mobile, and custom platforms, and more for enterprise and midmarket-sized clients. 

    Clients

    • Audi
    • BASF
    • BMW
    • Credit Suisse

    Industries

    Notable Project

    intive (formerly FDV Solutions) collaborated with the client on the refinement and implementation of an iOS app. They worked on the code, Ruby on Rails elements for API integration, additional features, and bug fixing.

    "They adhere to good work processes, having an agile practice that they actually care about."

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  • 7
    • Scheduling

      4.3
    • Quality

      4.7
    • Cost

      4.2
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 250 - 999 employees
    • London, United Kingdom

    Softwire is a digital design, engineering and support agency, with offices in London, Cambridge and Manchester. Employing over 200 engineers we create bespoke digital software, mobile apps, and offer strategic IT consulting for some of the UK’s leading brands including the BBC, David Lloyd Clubs, Channel 5 and many large Government Departments.

    Clients

    • The BBC
    • David Lloyd Clubs
    • RSA
    • The Cabinet Office

    Industries

    Notable Project

    A property portal company has collaborated with Softwire for custom software development using React, Java, and more. They manage product research, MVP creation, launching process, and various optimization. 

    "They operate independently and raise issues only when necessary."

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  • 8
    • $50,000+
    • 50 - 249 employees
    • London, United Kingdom

    Intellectsoft is a boutique digital transformation consultancy headquartered in Palo Alto, California. The Company provides cutting edge engineering solutions for global and Fortune 500 companies with the mission to help enterprises accelerate adoption of new technologies, untangle complex issues that always emerge during digital evolution, and orchestrate ongoing innovation.

    Intellectsoft maintains its advanced domain expertise through five dedicated labs:  Cognitive Computing, Decentralized Applications (i.e. Blockchain), Internet-of-Things (IOT), Premier Customer Experience (CX), and Mixed Reality (AR, VR).

    Established in 2007, Intellectsoft operates across multiple offices with the engineering centers in the U.S., the U.K., the Nordic region and Eastern Europe.

    Clients

    • Mitsubishi
    • Fleet Nurse
    • Harley-Davidson
    • Jaguar Land Rover

    Industries

    Notable Project

    Intellectsoft is developing a youth marketing agency’s app. They’ve taken over from the in-house team that started the project. The app generates reports and is available on Android, iOS, and the web.

    "Intellectsoft’s communication is very efficient and clear."

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  • 10
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $100,000+
    • 50 - 249 employees
    • London, United Kingdom

    Elsewhen, a midsize software development firm, is located in London, United Kingdom. Their services include custom software development, enterprise app modernization, IT strategy consulting, business consulting, and more.

    Industries

    Notable Project

    A transportation company hired Elsewhen to develop and design a microsite. The team was responsible for implementing a CO2 calculation feature, prototyping, testing, and graphic design.

    "Very satisfied with the results, and I wouldn't hesitate to continue working with Elsewhen again."

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  • 11
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom
    ArionERP is a midsize ERP consulting and SI company in San Jose, California. They offer ERP consulting and SI, enterprise app modernization, CRM consulting and SI, and finance & accounting outsourcing (FAO) and were launched in 2016.

    Industries

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  • 12
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 1,000 - 9,999 employees
    • London, United Kingdom

    Kin + Carta is a tech-centered management consultancy based in Chicago. Founded in 1964, they also have offices in London, San Francisco, New York, and Singapore. Their team of approximately 3,000 focuses primarily on enterprise clients in the financial services and health care fields. Services include mobile app development, cloud consulting, and more.

    Clients

    • AstraZeneca
    • Expedia
    • Santander
    • Barclays

    Industries

    Notable Project

    Kin + Carta (formerly Spire Digital) completely redesigned the website of a swimming organization. They restructured the UI/UX to make an attractive, user-friendly, and responsive site while integrating it into the existing CMS.

    “They brought something new to the table that we hadn’t seen before.”

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  • 13
    • Scheduling

      4.2
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      4.7
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom

    Esynergy is a big data analytics company. They are headquartered in London, United Kingdom and have a midsize team. Their services include BI & big data consulting & SI, cloud consulting & SI, custom software development, mobile app development, and more.

    Industries

    Notable Project

    A streaming services company hired esynergy for cloud and cybersecurity services. They hosted their servers on AWS, took care of coding, and created a high-security password vault, among other tasks.

    ''All outcomes and goals that were set at the beginning of the project were fully met.''

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  • 14
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom
    Daynt, a software development firm, was launched in 2020. Their small team is located in London, United Kingdom. The company specializes in custom software development, web development, mobile app development, application management & support, and more.

    Industries

    Notable Project

    Daynt developed an iOS, Android, and web app marketplace for a property management professionals network. They implemented features for user management, searching, job posting, quoting, payments, and reporting.

    "Their deep understanding of our specific needs allowed them to provide tailored solutions."

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  • 15
    • Scheduling

      4.2
    • Quality

      4.5
    • Cost

      4.3
    • NPS

      4.7
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • London, United Kingdom

    Somo is a digital development company of 125 employees, founded in 2009. Their headquarters is in London, England, with other locations in New York, San Francisco, Singapore, and Bristol, England. They offer numerous service lines, including mobile app development, enterprise app modernization, web development, and mobile marketing. They serve midmarket and enterprise businesses in various industries: media, automotive, business, financial services, advertising, and more. 

    Clients

    • Audi
    • De Beers
    • Hive
    • The Economist

    Industries

    Notable Project

    Somo designed an app, beginning with demo videos to act as a proof of concept and moving into wireframes; the in-house development team finished the product. Somo was also involved in overall mobile strategy.

    "They know the market. They live and breathe mobile, and they just know it all. They’re very creative and innovative."

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  • 16
    • Scheduling

      4.5
    • Quality

      5.0
    • Cost

      4.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 2 - 9 employees
    • London, United Kingdom

    Seb Azzo is a custom software development company based in London made up of a team of fewer than 10 members. Since their founding in 2012, they have provided custom software development and enterprise app modernization solutions for clients ranging from startups to large firms, working in industries such as hospitality, education, and business services.

    Clients

    • Accor Group
    • HP
    • Carlsberg
    • De Beers

    Industries

    Notable Project

    Seb Azzo developed all aspects of a cloud-enabled brand guideline sharing and storage technology. They’re continuing their work with their partner to optimize the solution.

    “They have the product’s best interests at heart, pushing it to make sure we’re getting a quality end result.”

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  • 17
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • Otford, United Kingdom

    Ecce. Is a small web design agency in Otford, United Kingdom. They provide web design, branding, e-commerce development, mobile app development, and more and were established in 1999.

    Industries

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  • 18
    • $10,000+
    • 10 - 49 employees
    • Southend-on-Sea, United Kingdom

    Software agency Atlas - Clever Software is headquartered in Essex and another office in London. With 17 employees, the agency specializes in web, custom software, mobile app development, and more for mainly midmarket businesses.

    Clients

    • Barclays
    • Investec Asset Management
    • M & G
    • Prudential

    Industries

    Notable Project

    Dedicated members of the Atlas team worked to develop a new and mobile-optimized quoting solution that can handle a complex pricing model and allows for greater customer support.

    "The cleverness displayed by Atlas really gave us confidence in knowing that they would deliver."

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  • 19
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom

    Aleios is a custom software development firm. They are located in London, United Kingdom and have a small team. Their services include custom software development, enterprise app modernization, web development, and other IT consulting and SI. The firm was founded in 2021.

    Industries

    Notable Project

    A weekly magazine company hired aleios for a development project. They wrote serverless processes to create XML feeds from the firm's CMS. The CEO, a senior architect, and a developer worked on the project. 

    "aleios has a confident and energetic approach to working with their clients that instills maximum trust."

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  • 20
    • $25,000+
    • 50 - 249 employees
    • London , United Kingdom

    TMotions Global Ltd is a custom software development firm established in 2004. The midsize team specializes in custom software development, enterprise app modernization, application management & support, and cloud consulting & SI. The firm is located in London , United Kingdom and Sahibzada Ajit Singh Nagar, India.

    Clients

    • An Australian food retailer that has 700 stores across Australia and has an online b2B and B2C portal working seamlessly to manage cohesive inventory and order view.
    • A Qatar based food major which supplies culinary products across 1000 restaurants. Powered by MS dynamics and custom .Net portal

    Industries

    Notable Project

    An information business has partnered with TMotions Global Ltd to develop multiple websites and apps using Reach, Node.js, Drupal, and .NET technologies. The team helps in planning, scoping, building, and more.

    "They are always eager to impress and to deliver."

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  • 21
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom

    Small custom software development firm inCode Systems, is headquartered in London, United Kingdom. The team specializes in custom software development, enterprise app modernization, ux/ui design, e-commerce development, and more.

    Industries

    Notable Project

    A food wellness company hired inCode Systems to develop a digital experience for their sales team. The vendor designed the site with WordPress.

    "They were very professional, went out of their way to help with ideas, and accommodated our demands."

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  • 22
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom

    Digiscript Technical Solutions is an enterprise app modernization company launched in 2019. The small team provides enterprise app modernization, ux/ui design, digital strategy, mobile app development, and more. The agency is located in Swansea , Nigeria and London, United Kingdom.

    Industries

    Notable Project

    Digiscript Technologies was hired to develop a landing page for a real estate company. The client wanted to get more traffic on their website. 

    "They're very impressive in trying to meet all our demands."

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  • 23
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Allmatics is a software development company headquartered in Kyiv, Ukraine. They were founded in 2018 and have about 3 teammates. They focus on custom software, web, and mobile app development projects for small businesses and midmarket firms in the healthcare and medical, business services, and e-commerce industries.

    Industries

    Notable Project

    Allmatics finished developing a web-based portal using PHP languages and Java Script. This involved automating and custom-creating features associated with patient results and enrollment.

    "They were very professional and patient with me when I didn’t understand the process."

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  • 24
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Softexpoit Pvt. Limited, a mobile application development company, was founded in 2021. The small London, United Kingdom-based team specializes in mobile app development, custom software development, other application development, application management & support, and more.

    Clients

    • Framers Group Sarl Switzerland
    • Ironhand S. A. USA
    • Yoru Portal UAE
    • Take1ads USA

    Industries

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  • 25
    • $250,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom
    Founded in 2004, Infostretch is an application testing company. The large Santa Clara, California-based team focuses on application testing, enterprise app modernization, BI & big data consulting & SI, cloud consulting & SI, and more.

    Industries

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  • 26
    • $50,000+
    • 10 - 49 employees
    • London, United Kingdom

    Founded in 2018, TEC DIGITAL LTD is a software development company based in London that primarily works with midmarket clients. They also provide blockchain, enterprise app modernization, and managed IT services. 

    Clients

    • OCTO Trading Solutions AG

    Industries

    Notable Project

    TEC DIGITAL LTD delivered a web solution that allows users to buy and sell commodities online. They integrated the development with blockchain technology and a third party financial partner. 

    "The deliver the product on time and have a lot of relevant experience."

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  • 27
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom
    Established in 2022, Captivate Solutions Tech Ltd is a IT staff augmentation company. The small team offers IT staff augmentation, custom software development, application management & support, and enterprise app modernization. The agency is in London, United Kingdom.

    Notable Project

    Captivate Solutions Tech Ltd helped a workplace management solutions company migrate their app platform to Kubernetes. Additionally, they refactored certain apps from Node.js to TypeScript.

    "They were very responsive."

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  • 28
    • $25,000+
    • 250 - 999 employees
    • London, United Kingdom

    Haulmont Technology is an ERP consulting and SI company. They offer ERP consulting and SI and were established in 2008. The company is in London, United Kingdom.

    Industries

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  • 29
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Wazobia Technologies is a small custom software development company based in London, United Kingdom. The team provides custom software development, web development, enterprise app modernization, and mobile app development.

    Industries

    Notable Project

    A publishing company has hired Wazobia Technologies to provide a resourcing solution for their web development needs. The team has created apps for six brands using Laravel, WordPress, and Next.js/React.

    "The standard of work has been consistently high."

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  • 30
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom

    Husssl Ltd is a custom software development firm. Launched in 2020, the team provides custom software development, mobile app development, enterprise app modernization, ux/ui design, and more. Their small agency is headquartered in London, United Kingdom.

    Notable Project

    Teksati [Husssl Ltd] is developing a mobile app and an administration panel for a fire and smoke compliance testing company. The products are designed to improve the client's reporting and site productivity.

    "They have been very responsive and open to ideas."

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