Developer Tools Startups
4,617 companies tagged Developer Tools, with their investors and founders.
Ohalo builds Data X-Ray, a data governance platform that discovers, classifies, and manages unstructured data across hybrid on-premise and cloud environments using LLMs and AI. It targets large enterprises needing to secure and govern data for generative AI use cases.
2 investors
Okahu provides tools for engineers to identify and debug issues in AI agents, offered through a cloud platform.
2 investors
Okareo tests conversational and voice AI agents using synthetic users ("Drivers") that simulate real customers across long, multi-turn conversations in 30+ languages to expose edge cases and regressions. It offers CI-based evaluation that gates pull requests on simulated conversations and converts production failures into automated test scenarios, serving enterprises and startups building AI agents.
2 investors
Okibi generates typed command-line interfaces (CLIs) from software code repositories using AI, making code executable and agent-friendly. The platform converts codebases into documented, versioned binaries that work natively with AI agents.
2 investors
Okteto is a developer platform that enables teams to develop cloud-native applications by moving development and preview environments into the cloud. The company serves software development teams of any size seeking to accelerate their development cycles and innovation.
2 investors
Olympix provides a security tool for smart contracts that deterministically analyzes Solidity code to identify and remediate vulnerabilities during development, before audits and deployment. It serves blockchain teams, DeFi protocols, and enterprises operating high-value on-chain assets, using intermediate representation, custom detectors, symbolic execution, fuzzing, and AI to find vulnerabilities and generate executable proofs of concept.
2 investors
One Click Labs is a research, design, and development studio building web3 applications and blockchain infrastructure, including airdrop campaign trackers and analytics tooling. It focuses on making crypto and blockchain products more accessible to users.
2 investors
One Month offers online courses in computer programming, coding, and business skills, including Ruby, Rails, Python, JavaScript, and project management. The platform teaches beginners and developers through expert-led courses aimed at accelerating their careers.
2 investors
A GraphQL API platform that unifies access to multiple third-party services including social networks, development tools, and payment processors through a single interface.
2 investors
OneGrep provides an AI agent that integrates with DevOps tools to automate manual operational tasks, including search, correlation, and incident response workflows, enabling engineering teams to reduce tool training overhead and accelerate development cycles.
2 investors
OnMeta provides modular APIs and widgets for Web3 platforms to enable fiat-to-crypto on/off ramps, cross-border payouts, and checkout using local payment methods like UPI (India) and GCash (Philippines), settling in stablecoins or USD. It also offers built-in compliance modules (KYC, AML, sanctions screening) and white-labeled infrastructure, focused on India and the Philippines with expansion planned to Vietnam and Indonesia.
2 investors
The OpenAPI Initiative maintains the OpenAPI Specifications, a formal standard for describing HTTP APIs that lets developers understand API behavior, generate client code, create tests, and apply design standards. It also organizes the OAI Summit, an event held as part of DeveloperWeek.
2 investors
OpenFunnel provides API primitives and tools for go-to-market teams to automate lead generation, account research, and prospect intelligence at scale. The platform targets sales and revenue operations teams seeking to build custom GTM workflows using generative AI agents.
2 investors
OB-1 is a terminal-based, self-improving AI coding agent that handles the software development lifecycle from planning to pull request, generating evaluation suites and reusable skills from a team's codebase and session history. It offers multi-model access via OpenRouter and integrations with tools like GitHub, Linear, Slack, Graphite, and VS Code for developer teams.
2 investors
OpenFoundry provides a developer platform for discovering, prototyping, and deploying open-source AI models to production environments. The platform serves AI developers and teams building AI-powered products.
2 investors
OpenHome is a platform for building ambient, voice-based AI devices, providing developers and OEMs with an on-device OS, local models, a sensor layer, voice SDK, and a DevKit. Its SDK handles wakeword, speech-to-text, LLM routing, text-to-speech, and hardware I/O, running privately and locally on the OpenHome DevKit or any Linux-based hardware for applications ranging from medical transcription to smart home integration.
2 investors
OpenLegacy provides an AI-driven platform for modernizing legacy systems such as mainframes and IBM i, automatically mapping dependencies and generating cloud-native APIs to enable phased migration without rewrites. It serves global enterprises in sectors including banking and insurance, integrating with AWS, Azure, GCP, and API management tooling.
2 investors
OpenOcean is a DEX aggregator that routes trades across 1,000+ liquidity sources on 40+ EVM and non-EVM chains, including Solana, to find the best swap prices. It offers a REST API, SDKs, and AI Agent integration for Web3 developers, with features like MEV protection and low-latency responses.
2 investors
OpenStudio is a design studio building AI-powered creative design tools for designers. The team, drawn from companies including IDEO, Apple, Adobe, and Pinterest, focuses on tools that support designers' creative work.
2 investors
Opsera is an AI-powered software development lifecycle platform that automates application development, governance, and deployment across enterprise organizations. The platform integrates with 150+ tools to manage continuous delivery, developer productivity, security, and compliance throughout the software pipeline.
2 investors
Opsera provides a no-code, AI-powered platform for DevOps and DevSecOps automation that helps enterprises orchestrate software delivery and security across multiple tools and cloud environments. The platform is designed to accelerate software innovation while ensuring compliance and efficiency at scale.
2 investors
OpsHelm provides real-time, event-driven cloud inventory and change monitoring across multi-cloud environments, condensing native cloud events into logical changes with contextual, pricing, and historical data. It offers a uniform multi-cloud API and streaming event format for engineering and operations teams to track configuration changes, triage incidents, and reduce time-to-resolution.
2 investors
OpsLevel provides an internal developer portal with out-of-the-box integrations and automation, plus customization options for engineering teams. The platform lets teams tailor their developer portal to specific workflows and needs.
2 investors
Oqoqo is an experimentation platform for testing and evaluating agentic AI workflows in production-like, isolated sandbox environments. It lets developers define repeatable experiments across agents, models, and versions, capture full execution traces, and measure metrics like success, latency, token use, and cost, with support for tools such as Claude Code, Codex, Cursor, and GitHub Copilot.
2 investors












