Developer Tools Startups

Offline Protocol builds a mesh networking software and network layer that lets apps and devices communicate, authenticate, and coordinate when the internet is unavailable, using BLE and WiFi Direct with encrypted sessions. It serves teams operating at the disconnected edge and developers building offline-capable apps.

2 investors

Ohalo provides AI-driven data governance and classification software for managing unstructured data at enterprise scale. The platform helps organizations enforce compliance, manage risk, and extract intelligence from unstructured files across multi-cloud and hybrid environments.

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

Olympix builds automated security tools for identifying vulnerabilities in smart contracts during development, enabling developers to detect and fix issues proactively before deployment or audit.

2 investors

Omnara provides an open-source platform for deploying, running, and managing AI agents through a unified API, available both as a self-hosted solution and managed cloud service.

2 investors

Omnigres builds a Postgres-based application platform that handles HTTP requests, WebSocket connections, background jobs, caching, and real-time notifications natively within a single database instance. It offers modular, individually adoptable Postgres extensions so development teams can implement business logic directly in the database rather than across separate application servers and infrastructure.

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 is an online learning platform offering accelerated bootcamps that teach coding and other real-world technical skills in a short time frame. It targets individuals seeking to build new skills through self-paced online courses.

2 investors

OneCLI is an open-source credential gateway that secures AI agents by injecting API keys at the network layer, preventing agents and LLMs from accessing credentials directly. It works across any agent framework and enforces policies at the proxy level for endpoint blocking, rate limiting, and approval workflows.

2 investors

A personal page for Sean Grove describing his work building systems that convert human intent into reliable software. It notes his background in AI post-training and alignment at OpenAI, his founding of OneGraph (acquired by Netlify), and his current project Linzumi.

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

The OpenAPI Initiative is a Linux Foundation-governed consortium that maintains vendor-neutral API description standards, including the OpenAPI Specification, Arazzo Specification for complex API workflows, and Overlay Specification for automated API documentation updates.

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

OpenRefactory provides automated application security (AppSec) tools that scan proprietary code and open source dependencies to identify and remediate vulnerabilities across the software supply chain. Its SAST and SCA-style solutions help engineering, OSPO, and OSS ingestion teams prioritize risky components and meet regulatory requirements such as the EU CRA and NIST SSDF.

2 investors

OpenRelay operates a distributed overlay network that connects consumer GPUs into a fault-tolerant mesh for inference workloads, automatically routing traffic around failed nodes without manual intervention. The platform allows anyone to contribute compute resources and deploy inference jobs via a single API call.

2 investors

OpenTeams positions itself around AI, advocating that organizations should own their own intelligence. The available page content is a blog excerpt and does not describe specific products or services.

2 investors

OpenTools provides an API that allows developers to access and use Model Context Protocol (MCP) tools with any LLM through a single integration, offering capabilities like web search, real-time location data, and web scraping.

2 investors

OpenWork is a desktop application that provides access to 50+ large language models with the ability to bring custom API keys and share configurations with team members. The platform integrates with multiple AI coding tools and agents through Model Context Protocol (MCP) servers.

2 investors

OpsVerse offers Aiden, an AI copilot that integrates DevOps tools—Git repositories, CI/CD pipelines, and observability systems—into one platform to automate workflows and resolve issues through natural-language interaction. It serves engineering teams at startups, scale-ups, and enterprises, with deployment options across cloud, on-premise, and hybrid environments for data residency and compliance.

2 investors

Orama builds search and AI infrastructure, offering OramaJS (an open-source search library), Orama Cloud Pro (managed search with AI answers at a flat monthly price), and Orama Zetta (an enterprise platform deployed in a customer's own cloud, on-premises, or dedicated infrastructure). It serves developers and enterprises needing search functionality with optional AI capabilities.

2 investors

Understudy Labs offers an open-source toolkit that captures traces from LLM production workflows, benchmarks and A/B tests cheaper or open-weight models against them, and fine-tunes and deploys specialist models that users own and can host anywhere. It is aimed at developers and teams looking to migrate from proprietary LLMs to models they control.

2 investors

Ordinary Objects provides design and prototyping tools for mixed reality projects, enabling designers to create visual representations of spatial experiences for stakeholders and developers.

2 investors

OSlash is a Chrome extension that enables users to create and use keyboard shortcuts (triggered by "o/") to quickly access documents, dashboards, and tools without searching through bookmarks or messages.

2 investors

Osseus builds a permissioned research brain that connects tools and data across R&D teams to surface past experiments, expert knowledge, and next actions. The platform serves technical and research teams in biotech, manufacturing, and similar knowledge-intensive industries by maintaining continuous memory of how work evolved and preventing repeated efforts.

2 investors