facebookincubator/Glean

An MCP server plus a CLI tool that indexes local code into a graph database to provide context to AI assistants.

The ultimate RAG for your monorepo. Query, understand, and edit multi-language codebases with the power of AI and knowledge graphs

Semantic Search & Call Graphs for AI Agents (100% Local)

A super light-weight embedded code search engine CLI (AST based) that just works - improves speed and efficiency for coding agent 🌟 Star if you like it!

Tools for code analysis, visualizations, or style-preserving source transformation.

Semantic Intelligence for Large-Scale Engineering. Context+ is an MCP server designed for developers who demand 99% accuracy. By combining RAG, Tree-sitter AST, Spectral Clustering, and Obsidian-style linking, Context+ turns a massive codebase into a searchable, hierarchical feature graph.

Sourcebot is a self-hosted tool that helps humans and agents understand your codebase.

Kythe is a pluggable, (mostly) language-agnostic ecosystem for building tools that work with code.

local-first semantic code search engine