3,993 tools
Free planCode
OctoPrint is the snappy web interface for controlling and monitoring 3D printers from a browser, with plugins, remote job management, and AGPL-licensed open source code. It targets makers who want full remote control, timelapses, and extensibility without proprietary host software.
Free trialInfrastructure
Oh Dear is website health monitoring that checks uptime every minute alongside SSL certificates, DNS, cron jobs, broken links, and performance metrics with status pages. The homepage sells an all-in-one monitoring suite for teams who want broad coverage without stitching many single-purpose tools.
Free planCode
Okibi generates production CLIs from your product so AI agents can use it reliably. It researches existing SDKs and competitor CLIs, designs commands, verifies them in sandboxes, ships binaries with SKILL.md files, and includes Okibi Identity for agent account setup.
Free trialSecurity
Okta provides identity and access management for workforce and customer use cases, spanning single sign-on, adaptive authentication, and Auth0-branded customer identity products. The corporate homepage markets secure access for employees, customers, and AI agents with platform integrations rather than a single one-size product SKU.
Free tier unknownAI research
Olam Labs evaluates frontier AI models in multi-agent simulations where agents cooperate, deceive, and negotiate across games and enterprise-style tasks. The team publishes arena ratings and works with labs on behavioral safety and capability benchmarks.
Free tier unknownCode
Olive helps teams build internal BI tools and dashboards with AI prompts connected to databases and third-party systems. It generates customer health views, churn risk analyses, and other operational dashboards with enterprise-oriented data understanding and security positioning.
Free planDevOps
OliveTin exposes predefined shell commands as safe web buttons so operators can share vetted automations with less technical users or agents. Actions are declared in YAML, refresh into the UI, and run under AGPL-licensed self-hosted control.
Free planResearch
OLMo from Ai2 is a fully open language model family with published weights, code, and training flow. The Olmo 3 card set includes base, think, and instruct variants at 7B and 32B scales for chat, tool use, reasoning, and research reproduction.
Free planCode
Omnigent is an open-source meta-harness for composing and governing AI coding agents across Claude Code, Codex, Pi, and custom harnesses. It adds contextual policies, OS sandboxing, shared live sessions, and built-in multi-agent personas such as Polly and Debby.
Free tier unknownDeveloper tools
Ona runs cloud-hosted software engineering agents and development environments with orchestration, governance, and kernel-level security. The homepage promises a mission control for AI engineers that works across devices with sandboxed VS Code environments and pooled compute credits for agent conversations.
Free tier unknownMarket infrastructure
OneChronos Group builds smart markets where optimization-based matching and expressive bids replace traditional queue priority, starting with a U.S. equities ATS and expanding to FX, rates, energy, and compute asset classes. The company targets both human traders and agentic execution systems.
Free planCode
OneCLI provides open-source AI teammates that connect to company tools with isolated VMs, policy controls, and human approval on sensitive writes. Teams delegate CRM updates, BI queries, and incident response from Slack or the web, with self-hosting available on higher tiers.
AI developer workflows
OneClickClaw provides managed hosting and deployment for OpenClaw and Hermes AI agents.
Free planCode
OneCompiler is an online IDE and compiler platform for writing, running, and sharing code in 110+ languages and databases. It adds AI-assisted building blocks, studio time, and team-oriented paid tiers on top of a free compiler that supports unlimited code executions with daily AI credit limits.
Free planDevOps
OneDev is a self-hosted dev platform combining Git hosting, issues, pull requests, CI/CD, packages, wiki, and workspaces with AI-assisted workflows. It targets teams that want an integrated toolchain without stitching separate SaaS products.
Free tier unknownCode
OnePatch instruments production stacks, verifies pull requests against live telemetry, and helps on-call teams catch regressions faster. It targets engineering organizations shipping many PRs daily who need monitors, dashboards, and incident threads tied to recent changes.
Free tier unknownCode
Onepilot is a mobile SSH and agent IDE for iPhone that keeps terminal sessions alive across disconnects. It pairs to Linux, macOS, or Windows hosts, deploys OpenClaw or Hermes agents over SSH, stores LLM keys in the iOS Keychain, and alerts you when infrastructure fails.
Free tier unknownCode
OneTriangle builds a KV cache-aware inference engine that prefills on a smaller model and decodes on a larger one. By transferring key-value cache between models, it targets lower prefill cost and faster first responses on long inputs without sacrificing decode quality when pairs pass quality gates.
Free planAssistant
onomeo is a public-beta service that offers a unified OpenAI-compatible API and browser chat across dozens of models, including free-to-call models and credit-metered access to Claude, GPT, and other large models. Users get one API key for tools such as Cline, Open WebUI, and SillyTavern, with usage tracked in credits or free call quotas.
Free tier unknownCode
OpenAPI Designer is a browser-based tool at openapidesigner.com for working with OpenAPI specifications. The public site loads as a single-page application branded OpenAPI Designer, intended for designing and editing OpenAPI documents in the browser.
Free trialDeveloper tools
OpenCage provides forward and reverse geocoding APIs and geosearch built on open data with GDPR-conscious operations. The homepage emphasizes predictable flat pricing, worldwide coverage, and developer-friendly REST endpoints trusted by thousands of teams embedding location lookup into apps.
Free tier unknownCode
Open Code Review is marketed as the open source code review agent on its official site, with a lightweight web presence pointing builders to the project repository. The homepage meta description positions it as an agentic reviewer rather than a hosted SaaS suite.
Free planDeveloper tools
OpenFeature is a CNCF incubating open specification that standardizes vendor-neutral feature flag APIs for application code. The project homepage explains how a shared SDK surface lets teams swap flag management backends or run in-house systems without rewriting feature toggles in every service.
Free planDevOps
Opengist is a self-hosted pastebin powered by Git where each snippet is its own repository with public, unlisted, or private visibility. Users can manage snippets via the web UI, Git CLI, or HTTP/SSH pushes.
Showing 2,928 of 3,993 tools
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