/Companies

Developer Tools Startups

5,798 companies tagged Developer Tools, with their investors and founders.

Onmeta

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.

3 investors

Onymos

Onymos offers DocKnow, a document and data processing platform for clinical laboratories that captures, validates, and enriches intake documents such as test requisition forms and medical records. Deployed within the lab's own infrastructure, it uses AI to extract structured and unstructured data, flag conflicting information, run eligibility checks, and maintain audit and compliance records.

3 investors

Onyx

Onyx is an open-source application platform for large language models that enables teams to leverage any LLM while maintaining data transparency and customization. The platform integrates internet search, internal knowledge connectors, code execution, and model context protocol integrations to provide enterprise and startup teams with flexible AI deployment options.

3 investors

Opal

Opal is an app that automatically manages technology usage by allowing users to block distracting apps on phones and desktops while tracking focus, sleep, and rest metrics to promote digital wellness and productivity.

3 investors

Open Ocean Fund Three Ky

OpenOcean is a pan-European early-stage venture capital firm investing in European-founded companies developing AI-native software, automation, and data-intensive technology to reshape knowledge work. The firm typically leads or co-leads Seed and Series A rounds with initial tickets up to €5m.

3 investors

OpenBlock

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.

3 investors

Opennode

OpenNode builds payments infrastructure using Bitcoin for merchants and developers seeking to accept digital currency transactions globally.

3 investors

Openocean

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.

3 investors

OpenScale

Latent Space develops AI applications tailored to the specific challenges and industries of emerging economies. The company focuses on labor-intensive sectors where AI can augment rather than replace workers, driving economic development in these markets.

3 investors

OpenSpec

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.

3 investors

Openstudio

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.

3 investors

Opslevel

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.

3 investors

Oqoqo

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.

3 investors

Orby AI

Orby AI was acquired by Uniphore to contribute Large Action Models, neuro-symbolic reasoning, and agentic process discovery capabilities to Uniphore's Business AI Cloud platform.

3 investors

Ossprey

Ossprey detects supply chain attacks and malicious dependencies by monitoring code behavior at runtime, identifying packages that scan clean but behave maliciously. It serves engineering teams building software who need runtime security monitoring without slowing development velocity.

3 investors

Othentic

Othentic develops tools for distributed systems, artificial intelligence, and open finance.

3 investors

Outspeed

Outspeed provides realtime voice infrastructure that developers can add to their apps to give AI companions human-sounding, emotion-aware, multilingual speech. The company offers scalable voice capabilities aimed at builders integrating conversational AI.

3 investors

Overheard

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.

3 investors

Overmind

Overmind is a platform that simulates the live production environment to show engineers the blast radius, dependencies, and risks of infrastructure changes before a pull request is merged. It integrates with existing Terraform and PR workflows to surface runtime impact for platform and engineering teams reviewing changes.

3 investors

OverOps

OverOps provides a reliability platform that lets engineering teams define SLOs, SLIs, and error budgets across multiple observability data sources and apply reliability guardrails in CI/CD pipelines. It helps development, deployment, and reliability teams track the impact of changes on service health to deploy code faster with better reliability.

3 investors

Pagaloop

Pagaloop is an SDK and API platform that enables developers to embed government payment collection directly into their applications, supporting taxes, permits, and municipal services across Mexico City and federal agencies. The platform integrates with ERPs, fintechs, wallets, and municipal portals, handling card, SPEI, and cash payments with fraud detection and regulatory compliance built in.

3 investors

Pangolin

Pangolin provides secure, zero-trust remote access to infrastructure using peer-to-peer tunnels and clientless browser access across on-premises, cloud, and edge environments. The open-source solution, based on WireGuard, verifies identity and context at every step.

3 investors

Panoply

Panoply is a cloud-based, managed data platform that provides code-free ELT pipelines, a data warehouse (built on BigQuery), and dashboards to consolidate data from many sources into a single source of truth. It serves organizations ranging from early-stage startups to established data teams and connects to business intelligence tools for analysis.

3 investors

Paper

Paper is a design platform with a canvas built on web standards (HTML/CSS) that connects designers' visual work with codebases, AI agents, apps, and data via MCP, syncing design tokens, styles, and components between code and canvas. It targets design and product teams working alongside AI coding agents.

3 investors

Other sectors & tags