# Best Testing and QA Providers in Greater London, England ## How Many Testing and QA Providers Products Does G2 Track? **Total Products under this Category:** 368 ### Category Stats (Aug 2026) - **Average Rating:** 4.76/5 (↑0.01 vs Jul 2026) The average rating of products in this category, based on all submitted ratings - **Top Trending Product:** Expleo (+2.02%) - Among all products in this category, Expleo recorded the largest rating increase compared to last month _Last updated: August 06, 2026_ ## How Does G2 Rank Testing and QA Providers Products? **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 800+ Authentic Reviews - 368+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. ## G2 Grid® for Testing and QA Providers ![G2 Grid® for Testing and QA Providers plotting products by satisfaction and market presence](https://www.g2.com/categories/testing-and-qa/grids.png?focus%5B%5D=100760&focus%5B%5D=96746&focus%5B%5D=27059&focus%5B%5D=103098&focus%5B%5D=106726&focus%5B%5D=1313548&focus%5B%5D=1189289&focus%5B%5D=1704031) Highlighted products: a1qa, DeviQA, TestDevLab, ThinkSys, Simform, BetterQA, Expleo, and Quality Professionals (Q-Pros). Underlying data: [Grid® JSON](https://www.g2.com/categories/testing-and-qa/grids.json?focus%5B%5D=a1qa&focus%5B%5D=deviqa&focus%5B%5D=testdevlab&focus%5B%5D=thinksys&focus%5B%5D=simform&focus%5B%5D=betterqa&focus%5B%5D=expleo&focus%5B%5D=quality-professionals-q-pros) **Sponsored** ### Act-On Act-On Software is a Marketing Automation Platform that provides solutions to empower marketers to engage marketing targets at every step of the customer lifecycle. Act-On makes customer data actionable so marketers can dream big and build smart, effective marketing automation programs to grow their businesses and generate higher customer lifetime value – all with the fastest time-to-value. Get a Demo: https://act-on.com/demo/ Act-On empowers marketers to: • Grow and expand their businesses at scale through B2B demand generation, B2C sales and transactions, and customer marketing features. Orchestrate and optimize the entire customer journey — from awareness to advocacy — by building continuous, customized engagement that transforms visitors into prospects, prospects into qualified leads, and qualified leads into lifetime customers. • Deliver exceptional brand experiences throughout the customer lifecycle by automating buying journeys, personalizing communications and campaigns, and improving brand affinity and loyalty. Leverage Act-On’s automated capabilities to attract new prospects, engage your contacts, and guide leads toward more frequent and more lucrative purchasing decisions. • Drive measurable product adoption and customer retention through executing comprehensive onboarding and training programs, product adoption and customer retention strategies, and new products and services promotions. From new contacts to loyal partners, you can use Act-On to engage your audience, turn them into brand ambassadors, and keep them coming back for more. With interactive and dynamic reporting and analytics to assess, showcase, and improve performance, the Act-On Platform is designed to deliver growth marketing value for businesses and marketers of any size, shape, location, and scale. Platform features include: • Automated and adaptable buying journeys • Deep integrations with leading CRM systems and web conferencing • Website visitor engagement tracking and intent reporting • Dynamic lead scoring, segmenting, and nurturing • Social media listening, prospecting, publishing, and advocacy • Easy-to-design web forms, landing pages, and email templates • Event-triggered and transactional emailing • Active contact-based pricing for actual usage billing We get marketing. We understand your challenges. And we’re here to help you excel with every customer and every campaign. [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1057&secure%5Bchosen_at%5D=2026-08-08T00%3A59%3A09Z&secure%5Bdisplayable_resource_id%5D=1224&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=retargeted_product&secure%5Bplacement_resource_ids%5D%5B%5D=1171&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=1171&secure%5Bresource_id%5D=1057&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Ftesting-and-qa%2Flocations%2Fgreater-london-england-gb&secure%5Btoken%5D=55e7d0c8a265121ee61100751c60fd679b3cef4b6ad380074d328b085344c0df&secure%5Burl%5D=https%3A%2F%2Fact-on.com%2F%3Futm_channel%3Dpaid_ppc%26utm_medium%3Dppc_g2%26utm_campaign%3Dppc_g2_2026Q2%26offerAsset_topic%3DOther%26offerAsset_type%3Dother&secure%5Burl_type%5D=custom_url) ### [Tapptitude](https://www.g2.com/products/tapptitude/reviews) Tapptitude is a Product Studio that partners with funded startups and established brands to build interactive, mobile-first digital products that people love to use. We work with our clients as Product Partners, supporting them proactively throughout the journey from idea to launching a product and scaling it up. Startups and brands work with us to define their product, design their prototype, develop and iterate their MVP in order to create a successful business. Our process stands out through our early focus on value and close partnerships. We work on each product to identify and create easy acquisition flows, generate value early to retain users, and build a solid infrastructure for scalability. Our workflows are based on lean principles, rapid prototyping techniques and agile development, making us very fast and flexible in iterating value to users. Our solutions for startups: • Product definition • Rapid prototyping • MVP development Our solutions for larger organisations: • Design sprints • UX research and persona design • Evidence-based growth plan Our technical team delivers full-stack implementation solutions, to build Native and React Native products for iOS, Android, Wearable Devices and the Web. Our services include: • Product strategy and definition • UX/UI design • Native and cross-platform Mobile Development • Web & Backend Development • DevOps • AI, Machine learning and Data Science • Manual & Automated QA • Product launch solutions • Product growth We’ve built products for industries like: • IoT • Health • Proptech • Fintech • Marketplaces and retail • Social platforms • Arts, entertainment and culture **Average Rating:** 4.9/5.0 **Total Reviews:** 31 #### Who Is the Company Behind Tapptitude? - **Seller:** [Tapptitude](https://www.g2.com/sellers/tapptitude) - **Year Founded:** 2013 - **HQ Location:** Cluj-Napoca, Cluj - **Twitter:** @Tapptitude 303 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=90f727f1577e15abd378d40c9f277a7a04239a1081ef25ca0dd737dacd475a1f&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Ftapptitude&secure%5Burl_type%5D=linkedin_company_website) 34 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 74% Small, 23% Medium #### What Do G2 Reviewers Say About Tapptitude? _AI-generated summary from verified user reviews_ ##### Pros - Users commend Tapptitude for their **high professionalism** , enjoying their knowledgeable and responsive team in the development process. - Users value Tapptitude's **strong execution and collaborative spirit** , resulting in a smooth and effective development process. - Users commend the **quality of execution** from Tapptitude, ensuring reliable and timely project development experiences. - Users value the **fast response times** from Tapptitude, ensuring efficient communication and project management. - Users value Tapptitude's **commitment to collaboration and responsiveness** , enhancing the development process and fostering teamwork. ##### Cons - Users face **communication issues** that can lead to misunderstandings and challenges, especially with language barriers involved. - Users face **lack of communication** that complicates collaboration and creates misunderstandings, particularly due to language barriers. - Users experience **project delays** due to communication challenges and timeline adherence, impacting overall satisfaction with Tapptitude. - Users find **timezone differences challenging** , but Tapptitude's round-the-clock availability helps mitigate the issue. - Users find **time zone issues** challenging, yet appreciate Tapptitude’s round-the-clock availability for support. #### What Are Recent G2 Reviews of Tapptitude? **["Tapptitude Professionals Delivered a Fantastic Solution"](https://www.g2.com/survey_responses/tapptitude-review-12710541)** **Rating:** 5.0/5.0 stars _— Tudor Draghiciu D._ [Read full review](https://www.g2.com/survey_responses/tapptitude-review-12710541) **["Exceptional Service during and after the project + very Fast Support"](https://www.g2.com/survey_responses/tapptitude-review-12179679)** **Rating:** 5.0/5.0 stars _— findmyfitbuddy o._ [Read full review](https://www.g2.com/survey_responses/tapptitude-review-12179679) ### [8th Light](https://www.g2.com/products/8th-light/reviews) We believe software is a craft born out of practice. Through our committed practice, we unlock potential that leads to quality solutions and ambitious work. 8th Light is a team of developers, designers, teachers, learners, users, collaborators, and leaders. We’re crafters, so we care about everything we create, building with integrity and in sustainable ways. And we find and nurture talent differently, prioritizing curiosity and creativity over credentials. By exemplifying the values of humanity, education, and ownership in everything we do, our crafters help clients master the challenges in front of them while building great opportunities ahead. 8th Light is a unique software design and development company, one that accelerates personal growth through challenging and influential work, a supportive culture, and transformative outcomes. **Average Rating:** 5.0/5.0 **Total Reviews:** 1 #### Who Is the Company Behind 8th Light? - **Seller:** [8th Light](https://www.g2.com/sellers/8th-light) - **Year Founded:** 2006 - **HQ Location:** Chicago, Illinois, United States - **Twitter:** @8thLightInc 3,474 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=dd079802e75747f08122d95ad01e1ec3cb78fc235d8b58279a66f2d10b9d6361&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F8th-light&secure%5Burl_type%5D=linkedin_company_website) 162 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 100% Large #### What Are Recent G2 Reviews of 8th Light? **[" software development"](https://www.g2.com/survey_responses/8th-light-review-1132399)** **Rating:** 5.0/5.0 stars _— Verified User in Telecommunications_ [Read full review](https://www.g2.com/survey_responses/8th-light-review-1132399) #### What Are G2 Users Discussing About 8th Light? - [What is 8th Light used for?](https://www.g2.com/discussions/what-is-8th-light-used-for) ### [DMI](https://www.g2.com/products/dmi-digital-management-inc-dmi/reviews) DMI is an end-to-end mobility company that combines all the skills and services necessary to deliver mobile enterprise solutions, including mobile strategy, UX, web, and app development, omni-channel commerce, brand and marketing, big data management and analytics, and secure device and app management. #### Who Is the Company Behind DMI? - **Seller:** [DMI - Digital Management](https://www.g2.com/sellers/dmi-digital-management) - **Year Founded:** 2002 - **HQ Location:** McLean, US - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=600db466f6fff7d17be829f778f88146f776b26aab86c129427273f6b1466fb3&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F51648&secure%5Burl_type%5D=linkedin_company_website) 2,021 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 100% Medium ### [One Beyond](https://www.g2.com/products/one-beyond/reviews) One Beyond is a multi-award winning bespoke software development company, with Headquarters in Farnborough, Hampshire, and engineering centres of excellence in London, Manchester, Madrid, Seville, Bucharest, Budapest and Szeged. Since 1994, we’ve created intelligent, cost-effective and intuitive web applications, desktop applications and mobile apps for established businesses, non-profits, government organisations and funded start-ups. We have a team of over 300 across our international business. One Beyond delivers large scale digital transformation, team augmentation, delivery of discrete Agile projects and world class bespoke software using complementary tech including, but not limited to, Microsoft .NET, Power BI, React and Node.js. The company’s capabilities also include DevOps proficiency and deployment on Azure and AWS. Accredited with Microsoft Gold Partner status, as well as ISO 9001 & ISO 27001, the firm’s highly competitive services are leveraged through an optimal blend of international delivery centres either UK-based or nearshore, all operating under One Beyond’s best practice methodology and with a partnership approach, to generate consistent and superior quality products and services. #### Who Is the Company Behind One Beyond? - **Seller:** [One Beyond](https://www.g2.com/sellers/one-beyond) - **Year Founded:** 1994 - **HQ Location:** Farnborough, GB - **Twitter:** @OneBeyond\_ 78 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=1a8adee66c2fa69a853ea196542f25f71b07876a7dde1e876c37b412270f05cf&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fonebeyond&secure%5Burl_type%5D=linkedin_company_website) 211 employees on LinkedIn® Spotlight Categories [Video Conferencing Software](https://www.g2.com/categories/video-conferencing) [Accounts Payable Automation Software](https://www.g2.com/categories/ap-automation) [Purchasing Software](https://www.g2.com/categories/purchasing-software) [E-commerce Fraud Protection Software](https://www.g2.com/categories/e-commerce-fraud-protection) [AI Sales Assistant Software](https://www.g2.com/categories/ai-sales-assistant) Similar Categories - [Blockchain Developers](/categories/blockchain-developers) - [Mobile App Development](/categories/mobile-app-development) - [Other Development Services](/categories/other-development-services) - [Software Developer Services](/categories/software-developer-services) - [Web Developers](/categories/web-developers) ![Adam Crivello](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Adam Crivello") AC Researched and written by [Adam Crivello](https://research.g2.com/insights/author/adam-crivello) Updated October 3, 2024 Testing and quality assurance (QA) is an integral part of the [software development](https://www.g2.com/categories/development-services) process, during which versions of a product are examined for bugs, design flaws, and performance quality as a whole. Many [mobile app developers](https://www.g2.com/categories/mobile-app-development) and [web developers](https://www.g2.com/categories/web-developers) offer testing and QA services as a standard part of the production lifecycle, but businesses can also hire a separate provider for software testing services. Product or development teams within an organization can also perform these tasks in house using [mobile app testing](https://www.g2.com/categories/mobile-app-testing) or [software testing software](https://www.g2.com/categories/software-testing). Show More