Search the Open Source Ecosystem

4OpenSource is a search engine built specifically for Open Source users, developers, and organizations. It combines multiple indexes, curated signals, and AI systems to surface repositories, documentation, packages, community resources, and vendor-neutral information. Use 4OpenSource to discover projects, compare licenses, find support options, and follow project news with results that prioritize relevance for Open Source workflows. Part of the 4SEARCH network of topic specific search engines.