Developer Tools Startups

OpenPipe provides an SDK that automatically captures prompt-completion pairs from existing LLM providers and converts them into fine-tuned models that are faster and more cost-effective to run.

1 investor

OpenProse is a declarative language and framework for orchestrating multi-agent AI workflows, allowing developers to write contracts in Markdown that compile into executable topologies for coordinating AI agents running on Claude, Codex, or other language models.

1 investor

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.

1 investor

OpenSpec is a lightweight, spec-driven framework for planning and organizing requirements in codebases, designed to work with AI coding agents like Claude Code, Cursor, and GitHub Copilot. It stores specifications alongside code to provide persistent context for development teams and enable reviewers to understand requirement changes without reading code.

1 investor

OpenSquare is a blockchain-focused development team building products for the decentralized/Web3 ecosystem. The company works on front-end infrastructure tooling and web and mobile applications within the crypto space.

1 investor

OpenSteer builds specialized AI agents that perform autonomous work by browsing the web, integrating with user tools, and executing on schedules either in the cloud or on-premises. The platform serves developers and enterprises looking to automate business processes and workflows.

1 investor

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.

1 investor

Openverse Network is building blockchain infrastructure for a "value internet," including protocols for cross-chain value transfer, naming, unified identity, inter-blockchain communication, and an EVM-compatible operating system for running public, consortium, and private chains. It serves developers and institutions who want to build or migrate decentralized applications and interoperate across blockchains.

1 investor

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.

1 investor

Oplane builds continuous architectural threat modeling software for AI-first engineering teams, automating security analysis that runs alongside code changes rather than as periodic reviews. The platform is designed for development teams shipping features daily, particularly in environments where AI agents and AI-generated code introduce new security risks.

1 investor

Opper is an EU-hosted AI gateway that provides a unified, OpenAI SDK-compatible API for accessing 300+ AI models across text, image, voice, and video, with automatic failover, tracing, and agent-building SDKs. It serves developers and companies with GDPR compliance, EU data residency, and AI governance/control-plane features.

1 investor

Opral develops infrastructure for file-based workflows, including Lix, a version control system for any file format, and Inlang, an open-format translation management system for teams.

1 investor

Opslane automates verification of code changes by spinning up ephemeral app environments and running acceptance criteria through a real browser, posting screenshots, video, and data checks to pull requests as proof. The platform serves software development teams as an alternative to manual code review and AI-only code analysis.

1 investor

Opsolutely provides automated deployment tools that help engineering teams release software more safely and efficiently, with a focus on making the process accessible to all team members.

1 investor

Opster provides tools to manage and optimize search operations, going beyond monitoring and infrastructure management to help teams configure data structures, reduce latency, prevent incidents, and improve performance. The product serves DevOps engineers and developers running search operations; in late 2023 the Opster team joined Elastic.

1 investor

Opstrace is an open source observability platform built on Cortex and Loki that runs in a user's own cloud account for metrics, logs, and alert management. The company and its technology are being integrated into GitLab.

1 investor

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.

1 investor

Optexity provides automation software that enables developers to extract data, fill forms, and automate workflows across third-party websites and web portals without APIs. The platform serves enterprises across healthcare, logistics, finance, and government sectors.

1 investor

Optiak provides a centralized platform that consolidates multiple artificial intelligence tools into a single, optimized access point for enterprise users. The platform is designed to simplify AI adoption and make AI foundational to business operations rather than experimental.

1 investor

Orca is an AI-powered platform for creating Minecraft mods, addons, and plugins without requiring Java setup or manual configuration. It enables game server hosting and management for players of all technical levels.

1 investor

Orca provides a platform for real-time control and evaluation of enterprise AI systems, offering low-latency deterministic evaluation of LLM and agentic AI flows alongside continuously updated predictive models that adapt to new data without retraining. It serves AI engineering teams with capabilities such as harmfulness screening, compliance, guardrails, auditable explainability, and agentic data management.</parameter> <parameter name="founders">[]

1 investor

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

1 investor

Orfeostory is a web and mobile app development agency in Singapore that provides custom website design, development, and app creation services for businesses of various sizes. The company serves SMEs and corporate clients seeking web solutions ranging from e-commerce platforms to WordPress and PHP development.

1 investor

Organized Themes develops WordPress themes and templates designed for nonprofits, churches, restaurants, and ecommerce businesses, along with website customization and development services. The company has been creating easy-to-use, code-friendly WordPress solutions with built-in control panels for 16 years.

1 investor