Best Application Development Tools Companies in London, United Kingdom
The 122 best Application Development Tools companies in London, United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Builder.ai.
Ranked: Best Application Development Tools companies in London
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Builder.ai Provider of AI-powered low code application development platform 72Funding top 23%Product top 26%Moat top 31%Tech top 32% All 9 signals ▾Fundingtop 23% Producttop 26% Moattop 31% Techtop 32% Globaltop 33% Innovationtop 36% Markettop 44% AItop 45% Growthbottom 42% Funding: Raised $450M across 3 rounds · 3 rounds over 8 yrs (0.4/yr) Product: 3 distinct product lines · 5 published apps (8.4k installs) rank vs industry peers · Fliar Intelligence Index 72/100 | $450M | 37 mo ago | 45 | — | ZohoSalesforceTailwind CSS+23 | Top 500k | — | — |
| 2 | Genesis Global Cloud based low code application development platform | $268M | 46 mo ago | 263 | James Harrison Co-Founder & CEO | WordPress Site EditorWordPressMySQL+37 | Top 5M | 3 patents Foam additives for polymer processing and surfactant formulations | 1 launch · 1 award |
| 3 | Tessl Developer of AI-powered platform for autonomous software evolution using natural language 72Funding top 25%Growth top 28%Tech top 30%AI top 30% All 8 signals ▾Fundingtop 25% Growthtop 28% Techtop 30% AItop 30% Moattop 40% Talentbottom 49% Globalbottom 45% Marketbottom 40% Funding: Raised $125M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 72/100 | $125M | 19 mo ago | — | Guy Podjarny Founder & CEO | SanityTurbopackEmotion+23 | Top 5M | — | 1 launch |
| 4 | Ably Provider of infrastructure for building realtime interactive application data streams | $78M | 59 mo ago | 33 | Paddy Byers Co-Founder & CTO | Apple iCloud MailGoogle WorkspaceRuby+26 | Top 1M | — | — |
| 5 | Paid Provider of a business engine for AI agents' monetization 57Talent top 28%Funding top 29%Tech top 31%Growth top 35% All 6 signals ▾Talenttop 28% Fundingtop 29% Techtop 31% Growthtop 35% Globalbottom 45% Marketbottom 31% Talent: 4 named leaders on record · 4 C-suite/founder profiles curated Funding: Raised $32.6M across 2 rounds · 2 rounds over 1 yrs (2.0/yr) rank vs industry peers · Fliar Intelligence Index 57/100 | $33M | 8 mo ago | — | Arnon Shimoni Co-Founder | TurbopackEmotionNode.js+23 | Top 10M | — | — |
| 6 | Sparkster Blockchain-based codeless software and application development platform | $30M | 95 mo ago | — | Sajjad Daya Founder & CEO | — | — | — | — |
| 7 | Stacker Online platform to convert spreadsheet data to enterprise applications | $23M | 58 mo ago | 22 | Sam Davyson Founder | StackerHQSentryCanny+25 | Top 5M | — | — |
| 8 | WeComm Mobile Application Framework | $13M | 226 mo ago | 10 | Graham Michael Summers Chairman & CEO | — | — | 77 patents Patents concentrated in electrical & electronics | — |
| 9 | Cerbos Provider of authorization platform for enterprise software and AI systems | $11M | 38 mo ago | 3 | Charith Ellawala Co-Founder | TurbopackNode.jsZoho+32 | Top 5M | — | 1 launch |
| 10 | Mippin DIY App Creation Platform | $9M | 233 mo ago | — | Scott Beaumont ex-Co-Founder | WordPressMySQLPHP+24 | Top 10M | — | — |
| 11 | Bloop Provider of AI based code completion software | $7M | 54 mo ago | 3 | Gabriel Gordon-Hall Co-Founder | Node.jsHeadless UITailwind CSS+14 | Top 50M | — | — |
| 12 | Syntasso Developer of a framework for building internal developer platforms | $7M | 32 mo ago | 8 | Christopher Hedley Co-Founder & VP Engineering | WixSentryEnvoy+19 | Top 50M | — | — |
| 13 | Embeddable Cloud based dashboard creation and integration platform | $6M | 18 mo ago | — | Harry Marshall Co-Founder | NextraNode.jsHeadless UI+19 | Top 5M | — | — |
| 14 | shuttle Cloud based application development and deployment solution 11Talent top 38%Funding top 40%Moat top 47%Global bottom 40% All 7 signals ▾Talenttop 38% Fundingtop 40% Moattop 47% Globalbottom 40% Patentsbottom 30% Innovationbottom 25% Marketbottom 20% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Funding: Raised $6.0M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 11/100 | $6M | 7 mo ago | 1 | Christos Hadjiaslanis Co-Founder | — | — | 2 patents Automated shuttlecock handling systems for badminton equipment | — |
| 15 | Keel Provider of no code custom internal tools and operational systems development platform 37Talent top 28%Funding top 38%Market bottom 37%Global bottom 37% All 4 signals ▾Talenttop 28% Fundingtop 38% Marketbottom 37% Globalbottom 37% Talent: 3 named leaders on record · 3 C-suite/founder profiles curated Funding: Raised $6.0M across 3 rounds · 3 rounds over 2 yrs (1.5/yr) rank vs industry peers · Fliar Intelligence Index 37/100 | $6M | 9 mo ago | — | Thomas Frew Co-Founder & CPO | — | — | — | — |
| 16 | Count Provider of collaborative analytics platform with AI and BI capabilities | $5M | 44 mo ago | 6 | Ed Hill Founder & CSO | SanityTurbopackApple iCloud Mail+18 | Top 5M | — | 1 job opening · 1 launch |
| 17 | AppFactor Provider of an agentic orchestration platform automating software maintenance and modernization 13Talent top 28%News top 45%Funding bottom 47%Global bottom 39% All 5 signals ▾Talenttop 28% Newstop 45% Fundingbottom 47% Globalbottom 39% Marketbottom 16% Talent: 3 named leaders on record · 3 C-suite/founder profiles curated News: 2 BI events in 12 mo (of 4 tracked, 1 types) · Top themes: Funding rank vs industry peers · Fliar Intelligence Index 13/100 | $4M | 4 mo ago | 1 | Attila Vajda Co-Founder | — | — | — | 3 launchs |
| 18 | Stepsize Developer of AI-powered reporting dashboards for software development issue trackers | $3M | 90 mo ago | 8 | Matthieu Louis Co-Founder | WebflowStripePriority Hints+16 | Top 50M | — | — |
| 19 | Glassfy Platform offering in app purchase integration software | $3M | 39 mo ago | 1 | Luca Garbolino Co-Founder & CTO | — | — | — | — |
| 20 | Chupamobile Marketplace for Mobile App Components | $3M | 141 mo ago | 11 | Paolo De Santis Co-Founder | — | — | — | — |
| 21 | Cosine Developer of autonomous AI software designed to execute engineering tasks | $3M | 22 mo ago | — | Sam Stenner Co-Founder | Apple iCloud MailGoogle WorkspaceAsciinema+12 | Top 5M | — | — |
| 22 | Brizy Provider of a no-code website builder and AI website generator | $2M | 42 mo ago | 37 | Luncashu Alexandru Co-Founder | YouTubeBunnyCloudflare+21 | Top 1M | — | 2 launchs · 1 award |
| 23 | Sticky Provider of a no-code platform for application development | $2M | 37 mo ago | 7 | Priscilla Israel Co-Founder & COO | Apple iCloud MailGoogle WorkspaceNginx+1 | Top 50M | — | — |
| 24 | Gitter Collaboration tools for developer communities | $2M | 128 mo ago | 50 | — | GhostNode.jsVarnish+13 | Top 5M | — | — |
| 25 | Mowico Developer of a no-code platform for building eCommerce mobile applications | $2M | 53 mo ago | 27 | Rudi Dokmecioglu Founder | WordPressMySQLPHP+28 | Top 50M | — | — |
| 26 | CRANQ AI-powered tool for generating replies on social media | $1M | 58 mo ago | 2 | Toby Rowland Co-Founder & CEO | WebflowYouTubeTwitter Ads+12 | Top 50M | — | — |
| 27 | Jeco Developer of software tools that optimise performance and reduce production costs | $1M | 10 mo ago | — | Emily Bailey Co-Founder | — | — | — | 1 award |
| 28 | Adadot Platform offering software development analytics software | $1M | 49 mo ago | 1 | — | — | — | — | — |
| 29 | Fliplet Enterprise app creation and management software | $746K | 134 mo ago | 19 | — | WordPressApple iCloud MailGoogle Workspace+34 | Top 5M | — | — |
| 30 | CodeStory AI powered coding assistant for developers | $500K | 36 mo ago | 2 | Sandeep Pani Co-Founder | Node.jsTailwind CSSReact+8 | Top 50M | — | — |
| 31 | Hypi AI powered backend as a service platform | $205K | 53 mo ago | 2 | — | DocusaurusZohoVarnish+10 | Top 50M | — | — |
| 32 | Trigger Platform offering workflow automation solution | $125K | 33 mo ago | 4 | Eric Allam Co-Founder | SentryNode.jsRadix UI+17 | Top 1M | 5 patents Arcade shooting game hardware controllers, especially shotgun-style input devices | 1 job opening |
Top 12 Application Development Tools companies in London
#1
Seed · London, England · founded 2024$32.6Mraised▾
Provider of a business engine for AI agents' monetization. This platform handles pricing, subscriptions, margins, billing, and renewals for AI agents, requiring minimal code integration. It supports various billing models, including seat-based, activity-based, and outcome-based approaches, allowing for flexible pricing strategies. The platform also tracks operational costs to optimize pricing and profitability. Furthermore, it provides tools for demonstrating the return on investment (ROI) to clients, facilitating renewals. The system is designed to scale with the growth of the AI agent business.
- Sep 2025Seed$21.6M
- Mar 2025Seed$11M
#2
Seed · London, England · founded 2021 · 1 employees$4Mraised▾
Provider of an agentic orchestration platform automating software maintenance and modernization. The platform uses specialized AI agents to handle bug fixes and code migrations. It tracks, prioritizes, and refactors software to manage technical debt. The system supports continuous improvement from infrastructure to code. It assists with transformation, refactoring, and modernization of tech stacks. The platform also offers documentation and discovery features.
- Feb 2026Seed$4M
- Aug 2023Seed—
#3
Series A · London, England · founded 2024$125Mraised▾
Developer of AI-powered platform for autonomous software evolution using natural language. The platform enables users to define functionality, allowing AI to handle implementation and maintenance. It offers spec-centric development, ensuring software details are maintained and protected against regressions. The system adapts automatically to dependencies and updates, generating code across languages and platforms. It regenerates code according to team preferences and optimizes performance based on usage data.
- Nov 2024Series A$100M
- 2024Seed$25M
#4
Seed · London, England · founded 2020 · 1 employees$6Mraised▾
Cloud based application development and deployment solution. It enables users to develop and deploy applications using the Rust framework. It provides infrastructure definitions from code function signatures and annotations to build the backend. It connects with databases to develop a URL shortener.
- Oct 2025Seed$6M
#5
Seed · London, England · founded 2022$6Mraised▾
Provider of no code custom internal tools and operational systems development platform. It is a cloud based backend platform that manages the gap between no code tools and ERP systems, enabling engineers and operators to collaborate and solve operational issues. The platform provides a backend solution with database, APIs, authentication, and deployed infrastructure. The features include designing data model, task and queue management, code extension, typescripts generation, trigger scheduling, permission control, and more.
- Aug 2025Seed$1.3M
- Oct 2024Seed$6M
- May 2022Seed$5.8M
#6
Deadpooled · London, England · founded 2012 · 45 employees$450Mraised▾
Provider of AI-powered low code application development platform. It offers tools that allows users to build applications without coding. The platform integrates AI with human expertise to manage the development process, from initial concept to launch and ongoing maintenance. It caters its solution to entrepreneurs, small businesses, and enterprises. It also offers cloud hosting solutions.
- May 2023Series D$250M
- Mar 2022Series C$100M
- Nov 2018Series A$29.5M
#7
Seed · London, England · founded 2024$1.3Mraised▾
Developer of software tools that optimise performance and reduce production costs. The company provides a suite of tools designed to automatically improve software performance across various devices. These tools address CPU, GPU, RAM, network, and disk usage issues. The software aims to lower development expenses and server costs, while also increasing battery life. An energy dashboard application offers energy use and carbon data.
- Jul 2025Seed$1.3M
#8
Seed · London, England · founded 2023$6.3Mraised▾
Cloud based dashboard creation and integration platform. The platform enables organizations to embed dashboards and analytics into the web applications. It offers charting components to create charts. It leverages drag and drop interface to build interactions between charts.
- Dec 2024Seed$6.3M
#9
Series C · London, England · founded 2015 · 263 employees$268Mraised▾
Cloud based low code application development platform. It offers its solution to financial markets by providing an event-driven architecture that supports real-time applications. The platform provides developers with dev tools, documentation, and reusable components to streamline the development process. Features include deployment, monitoring, messaging, and more.
- Jul 2022Series C$20M
- Feb 2022Series C$200M
- Mar 2021Series B$45M
- Nov 2018Series A$3M
#10
Seed · London, England · founded 2022$2.6Mraised▾
Developer of autonomous AI software designed to execute engineering tasks. The software autonomously branches, implements, tests, and submits pull requests from task assignments. It integrates with existing workflows via Slack, Jira, and Linear. The software provides a workspace environment with code execution and browser capabilities. It can see and edit frontend code across existing and new projects.
- Aug 2024Seed$2.5M
- 2023Seed$500K
#11
Series B · London, England · founded 2016 · 33 employees$78Mraised▾
Provider of infrastructure for building realtime interactive application data streams. This technology enables developers to synchronize application state across multiple devices and users. The platform facilitates message delivery for chat features, live dashboards, and agentic sessions. It provides software development kits and integrations for various programming languages and cloud services. The architecture supports data synchronization between databases and frontends to maintain continuous connectivity for interactive digital experiences.
- Jun 2021Series B$70M
- Apr 2020Series A$7M
- Jun 2019Seed$1M
#12
Seed · London, England · founded 2021 · 8 employees$7.1Mraised▾
Developer of a framework for building internal developer platforms. The framework enables co-creation of platform capabilities tailored to an organization's needs. It provides a contract between application and platform teams through the creation of promises. The framework offers workflows to codify organizational policy, compliance, and governance, enabling consistent application. It also simplifies operations across different environments and clusters.
- Oct 2023Seed—
- Oct 2023Seed—
- Oct 2023Seed—
- Oct 2023Seed—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Application Development Tools coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.