# Andersbakken/rtags

A client/server indexer for c/c++/objc[++] with integration for Emacs based on clang.

Repository: https://github.com/Andersbakken/rtags
Canonical: https://ross.abutalabs.com/products/rtags
Homepage: http://www.rtags.net
Language: C++
License: GPL-3.0
License Family: copyleft
Last push: 2026-08-21T04:18:31+00:00

## Health v2 (maintenance only)
Score: 88/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 69, longevity 100
- inputs: {"age_days": 5524, "days_push": 12, "days_rel": 207, "gap_med": 0, "n_releases_24m": 4}
- flags: no_readme
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1846, forks 258 (observed 2026-08-28T04:05:43.494296+00:00)

## What it is
RTags is a client/server application that indexes C/C++/ObjC code using clang, maintaining a persistent database of symbols, references, and definitions. It integrates with Emacs to provide follow-symbol, find-references, rename-symbol, and live diagnostics features.

## Use cases
- jump to definition in c++ code from emacs
- find all references to a symbol in a large c++ codebase
- rename a symbol across a c project
- get live clang diagnostics and fixits in emacs
- index c/c++ code for fast symbol lookup

## When to choose
- you use Emacs for C/C++ development and want fast, accurate code navigation
- you need persistent, incremental indexing of large C/C++ codebases
- you prefer clang-based tooling over LSP servers

## When to avoid
- you use an editor other than Emacs (limited integration)
- you already rely on clangd or another LSP server
- you need ObjC support beyond limited coverage

## Facets
- artifact type: application
- maturity: active
- function: search-engine, developer-tools, editor
- domain: developer-tools, text-editors, parsers
- platform: cpp
- tags: c-cpp-indexer, clang, emacs-integration, code-navigation, language-server-alternative, client-server, linux, macos, emacs

## Member repositories
- Andersbakken/rtags (main) score 88

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:43.494296+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:17:51.784395+00:00, confidence not recorded.
  - homepage: http://www.rtags.net (fetched 2026-08-29T10:56:35.155642+00:00, sha 552ae420460c)
- Data as of 2026-08-30T08:39:29.467469+00:00.