searchcode Code Search Engine

searchcode is a free source code and documentation search engine that indexes over 40 billion lines of code from over 250 million documents across multiple repositories, package managers, and code hosting platforms. Created by Ben Boyter in 2011, searchcode helps developers find code examples, function definitions, API usage patterns, and documentation across a vast range of programming languages and frameworks. Key features include: multi-source indexing (searching across GitHub, GitLab, Bitbucket, Google Code Archive, SourceForge, and over 100 package repositories including npm, PyPI, Maven Central, RubyGems, Packagist, and NuGet), instant search (providing near-instant results across billions of lines of code with intelligent ranking that prioritizes relevance and code quality), language filtering (filtering results by programming language, supporting over 75 languages including Python, Java, JavaScript, Go, Rust, C, C++, C#, Ruby, PHP, Swift, Kotlin, and many others), repository filtering (narrowing results to specific repositories or projects), result context (showing code snippets with surrounding context lines, file names, and repository links for easy navigation), Boolean search (combining terms with AND, OR, and NOT operators for precise queries), exact phrase search (using quotes for exact string matching), regex search (limited regular expression support for pattern-based code searches), documentation search (indexing documentation from popular libraries and frameworks alongside code), API access (a REST API for programmatic code search integration), and community-driven with support for submitting new repositories for indexing.