Developer Tools Startups

2389 Research builds developer tools and experiments for AI-assisted software engineering, including domain-specific languages, pipeline orchestration engines, and agent infrastructure. Its offerings focus on authoring, running, and coordinating AI coding workflows, largely oriented around Claude Code and MCP integrations.

2 investors

3Square builds a "Decision OS" that automatically captures engineering decisions—the rationale, trade-offs, and alternatives—within existing developer workflows, creating an organisational memory that supplies context to human and AI decision makers. It integrates into IDEs and coding agents to surface and guide decisions for hybrid human-AI engineering teams and their leaders.

2 investors

42Crunch provides API security tooling that applies governance and protection controls across the software lifecycle, from OpenAPI contract auditing and scanning at design and build time to runtime protection. It focuses on securing interactions between AI agents and enterprise APIs, serving security and development teams.

2 investors

8090 is an AI-native software development platform designed for regulated enterprises in healthcare, financial services, manufacturing, and government that enables teams to build production code from business intent with full audit trails and governance controls.

2 investors

a0.dev provides a platform that generates React Native projects to accelerate mobile app development for developers. The service aims to reduce typical development timelines by automating project scaffolding and boilerplate code generation.

2 investors

Ably provides a globally distributed realtime messaging platform with low-latency transport and higher-level products for pub/sub, chat, state sync, and collaboration, integrated via developer APIs and SDKs. It serves developers and enterprises building realtime and AI-driven applications at scale.

2 investors

Abstra provides a platform for finance teams to build and execute automated workflows in Python, replacing manual spreadsheet-based processes and integrating with enterprise systems like SAP for tasks such as reporting, reconciliations, and approvals. The platform enables both finance and technical staff to convert operational procedures into code with version control and auditability.

2 investors

Abstract is a web3 platform for building, deploying, and scaling onchain applications, offering an ecosystem portal for users to discover apps, communities, and earning opportunities. It supports categories such as decentralized exchanges and trading tools, games, AI agents, and social networks.

2 investors

Abyssale is a creative automation platform that helps marketing and design teams produce, resize, adapt, and scale visual marketing assets, reducing repetitive design work. It serves marketers, designers, developers, and agencies collaborating on creative production.

2 investors

AccelByte provides managed backend modules, developer tools, and professional services for building, launching, and operating games across PC, console, mobile, and VR. It serves game studios ranging from indie developers to AAA publishers, offering engine-agnostic SDKs for Unreal, Unity, and custom stacks.

2 investors

Aceiss detects unauthorized employee access to company systems and monitors user privileges across applications to prevent cyber attacks. It provides visibility and analytics for access control, compliance audits, and zero trust security implementation.

2 investors

Adam is an AI agent that connects to CAD software, PLM systems, and supplier tools to automate hardware engineering workflows like BOM management, design reviews, sourcing, and RFQ generation. It serves hardware engineering teams and operates across Onshape, SolidWorks, Fusion, and other existing tools without requiring data migration.

2 investors

Adaptive builds adaptive generative AI systems tailored to individual company use cases, moving beyond generic models to incorporate specific organizational knowledge and requirements.

2 investors

Adapty provides infrastructure and analytics for mobile apps that sell in-app subscriptions. Its tools let developers and marketing teams update paywalls without shipping a new app version, deliver discount offers through push notifications, and monitor subscription events and revenue metrics.

2 investors

aelf is a blockchain platform with a multi-dAppChain, cloud-native architecture and AI-enhanced features designed to support parallel transaction processing. It provides developers and creators with templates, SDKs, and documentation across languages such as C#, Java, JavaScript, Python, and Go to build, deploy, and manage decentralized applications (dApps).

2 investors

Affogato is an all-in-one AI studio for generating, editing, and upscaling images and video with 170+ models integrated into a single workspace. It serves creators and marketers in fashion, product photography, and advertising who need consistent character and brand representation across multiple formats and shots.

2 investors

AgentLayer is a decentralized, permissionless blockchain network for autonomous AI agents, using a Byzantine fault-tolerant blockchain to register AI services, agents, and models and enable them to collaborate with minimal human intervention. It offers developer tools including AgentStudio (a visual, zero-code agent builder), Python/TypeScript SDKs, smart contract integration, and Telegram/TON bot deployment, along with the $AGENT token that powers node incentives, agent transactions, governance, and staking.

2 investors

AgentMail provides an email inbox API that enables AI agents to create and manage their own email accounts. The platform serves developers building AI agents that need email communication capabilities.

2 investors

AGI develops on-device AI agents that automate tasks across applications while maintaining privacy and working offline. The platform integrates with existing hardware and software stacks to enable context-aware autonomous actions on smartphones, PCs, and wearables.

2 investors

Agnost AI provides observability and failure detection for AI agents in production environments. The platform analyzes real production conversations from any LLM or framework to identify failures, extract patterns, and generate fixes that teams can implement, with support for intent detection, sentiment analysis, and automatic improvements.

2 investors

Agnostic is a data and AI consultancy that designs and operates high-performance ClickHouse clusters, real-time data pipelines, and production LLM/RAG systems for clients across industries. Its work spans product analytics, ecommerce reporting, blockchain data platforms, and AI copilots grounded in proprietary data.

2 investors

Aiden provides software that automates Windows endpoint management and security for IT teams, handling endpoint compliance, vulnerability mitigation, and deployment processes. It targets organizations seeking secure, reliable computing at enterprise scale.

2 investors

AIMon provides real-time monitoring and guardrails for AI systems in production, helping enterprises detect errors, biases, and hallucinations in LLMs, RAG pipelines, and agentic AI applications. The platform enables continuous evaluation using production-ready metrics across safety, accuracy, and compliance, with domain experts able to define custom quality standards in plain English.

2 investors

AirPair connects software developers with experienced practitioners across various technical domains through live video sessions and shared screen viewing, enabling teams to resolve technical problems and improve code quality more quickly.

2 investors