Developer Tools Startups

Artillery is a performance testing toolkit that provides load testing, Playwright-based end-to-end testing, and production monitoring capabilities for web applications and APIs. It serves development and DevOps teams that need to ensure application performance and reliability at scale.

1 investor

Artiphishell develops AI-driven security tooling that uses LLMs to automatically find, analyze, and patch software vulnerabilities, drawing on techniques such as guided fuzzing, symbolic execution, and binary analysis. The product is built from research the founding team ran during DARPA's AI Cyber Challenge.

1 investor

Artistanbul provides custom software development for organizations, including native and web-based mobile applications, along with business development, community management, and educational technology services. It builds Learning Management Systems (LMS) and innovative curricula for educational institutions.

1 investor

Asayer (OpenReplay) offers session replay and product analytics software that lets teams record and watch how users interact with their web apps to spot friction points, errors, and drop-offs. It includes co-browsing for live user support, developer tools for reproducing and fixing bugs, and a self-hosted deployment option for full control over customer data.

1 investor

Aserto provides a fine-grained, resource-level authorization platform that developers integrate into applications via SDKs, middleware, and gRPC/REST APIs, with a central control plane and local authorizers for real-time access decisions. It offers audit trails and compliance support, and is built on open-source foundations including the Topaz authorizer, Open Policy Agent, and a Google Zanzibar-inspired directory.

1 investor

ashr provides testing and evaluation infrastructure for AI agents, allowing developers to run tests, catch failures, and debug agent behavior before production deployment. The platform offers real-time tracing, prompt versioning, and automated failure detection for teams building autonomous agents.

1 investor

Aside is an AI-powered browser that enables autonomous agents to complete web-based tasks across logged-in websites without integrations, including payments, messaging, and internal tools. It provides memory of browsing context, secure credential management for agents, and runs locally with hardware-backed encryption.

1 investor

Kim is a no-code document generation and workflow automation platform that converts existing letters, forms, contracts, and compliance records into web applications for self-service data capture and document generation. The platform serves legal, contracting, compliance, and knowledge worker functions across financial services, pharma, technology, and professional services organizations.

1 investor

Dragonfly provides a platform that helps businesses make data-driven software purchasing decisions by offering transparent, unbiased information about tools and vendors. The platform cuts through vendor bias and marketing noise to enable companies to build the right technology stack for their needs.

1 investor

Aspect is a unified media storage and collaboration platform that combines file storage, video streaming, and AI-powered automation for creative teams. It allows teams to upload, collaborate, review, and stream media files like a local network drive while automating media workflows with artificial intelligence.

1 investor

Aspect provides tools for developers to construct and deploy user interfaces with speed and efficiency.

1 investor

Aspire Systems is a global technology services firm that partners with enterprises and software vendors to leverage technology outsourcing and software services. The company serves clients across software, banking, insurance, retail, and public sector verticals with AI-powered technology solutions and domain expertise.

1 investor

Assembla provides code collaboration and project management tools for development teams to coordinate work, manage code, and collaborate on projects. The company is now part of Idera, Inc., a portfolio of developer-focused software productivity platforms serving over 50,000 customers globally.

1 investor

Assemble provides a platform for managing changes across enterprise systems, allowing developers to scope dependencies, modify logic, and validate changes across multiple platforms from a single interface.

1 investor

AssembleAI provides AI-driven autonomous testing for embedded systems hardware, automatically generating test cases from engineering specifications and running them on lab instruments to identify and verify fixes for firmware and hardware issues. The platform integrates with existing development tools and lab equipment, targeting hardware engineering teams.

1 investor

Assistant-ui is an open-source React library that provides pre-built components and state management for building AI chat interfaces. It enables developers to integrate ChatGPT-style conversational UIs into applications with support for streaming, multi-turn conversations, and integration with LLM providers like LangChain and Vercel AI SDK.

1 investor

Asteria Corporation develops and sells enterprise software focused on data connectivity and integration. Publicly listed in Japan, the company operates offices across Japan and international subsidiaries in Singapore, China, and the United States.

1 investor

Winfunc is an autonomous application security platform that connects to GitHub repositories to run static analysis (SAST), software composition analysis (SCA), AI triage, and automated remediation, delivering audits with executable proof-of-concepts and fixes as pull requests. It targets enterprise engineering and security teams and supports major programming languages for codebase-wide vulnerability detection.

1 investor

Asterizm is a blockchain infrastructure platform that enables secure cross-chain smart contract transactions across multiple blockchain networks. The platform provides tools for developers to implement interoperable decentralized applications with built-in security validation mechanisms.

1 investor

AstraKode Blockchain is a low-code platform that enables businesses to develop blockchain-based solutions using drag-and-drop tools and pre-built components, supporting Hyperledger Fabric and Solidity technologies. The platform serves enterprises seeking to build trustless blockchain applications without extensive coding expertise.

1 investor

Astro is an open-source web framework for building content-driven websites such as marketing sites, blogs, and e-commerce stores, using island architecture to render components on the server and ship minimal JavaScript. It supports major UI frameworks, integrations, and one-line deployment to hosts like Netlify, Vercel, and AWS.

1 investor

Athanor builds Kairos, a verification engine for hardware and software that uses formal tools to prove or refute equivalence for RTL optimizations, carrying machine-checked proof and measured area reductions. It also maintains Pythia, an open-source Lean 4 tactic library for theorem proving, serving engineering teams that require formally verified computational claims.

1 investor

Athena builds an AI agent system with an institutional knowledge graph that learns and operates within companies by continuously extracting and organizing facts from meetings, documents, and email to maintain accurate organizational memory.

1 investor

Atmosera develops the Atmosera Management Platform (AMP), a proprietary tool for managing, monitoring, and optimizing Microsoft Azure cloud resources and infrastructure deployments. The platform serves organizations seeking comprehensive Azure management and compliance capabilities.

1 investor