Freemium
HashiCorp Vault
Open SourcePasswords & IDs · Security
Manage secrets, certificates and encryption centrally.
secretsmanagementhashicorp
Browse the complete directory — use filters to narrow down.
Passwords & IDs · Security
Manage secrets, certificates and encryption centrally.
ORMs · Backend
Instant GraphQL APIs over your databases with permissions built in.
Agent & LLM Frameworks · AI for Developers
Open-source LLM observability — logging, caching, rate limiting and cost tracking behind a one-line proxy.
API Clients · API Tools
Lightweight, open-source API development ecosystem in the browser.
Tunneling & Debugging · API Tools
One-click HTTP interception, inspection and mocking for any stack.
API Clients · API Tools
User-friendly HTTP client for the CLI with JSON-first syntax.
NoSQL · Database
Purpose-built time-series database for metrics and events.
API Clients · API Tools
Open-source API client for REST, GraphQL and gRPC by Kong.
Cross-Platform · Mobile Development
Cross-platform SDK using web technologies for hybrid apps.
JSON · Data Formats
Open-source JSON visualizer that turns data into interactive graphs.
Load & Performance · Testing
Open-source load testing tool using JavaScript test scripts.
Web Servers & Proxies · DevOps
Popular open-source API gateway and microservices management.
Agent & LLM Frameworks · AI for Developers
Framework for building LLM applications with agents and chains.
Agent & LLM Frameworks · AI for Developers
Open-source LLM observability: traces, evals and prompt management.
Models & LLM APIs · AI for Developers
Open-source, multi-provider chat UI with agents and artifacts.
Migrations & ERD · Database
Open-source database schema change tracking and deployment.
Agent & LLM Frameworks · AI for Developers
Data framework for connecting LLMs to your data (RAG).
Models & LLM APIs · AI for Developers
Open-source AI chat framework with plugins and agent marketplace.
Authentication · API Tools
Open-source auth infrastructure with a beautiful admin console — OIDC/OAuth, SSO and user management, self-hostable.
Logs & Metrics · Monitoring & Observability
Horizontally-scalable log aggregation designed like Prometheus.
UI Libraries · Frontend
React components implementing Google's Material Design.
Search Engines · Database
Fast, typo-tolerant search engine with great defaults (trending).
Dashboards & BI · Data & Analytics
Open-source BI tool for dashboards and self-serve queries.
Penetration Testing · Security
The most widely used penetration testing framework: exploit modules, payloads and post-exploitation.