Top ARC GitHub Repositories & Tools (2026)

Visualize any GitHub codebase: free interactive architecture diagrams and one-minute explainer videos. Replace 'hub' with 'diagram' in any GitHub URL.

Cross-platform, sophisticated frontend for the libretro API. Licensed GPLv3.

Open source observability platform for logs, metrics, traces, RUM (web, android, ios), Session replay, pipelines, SLO and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage costs and single binary deployment.

XERJ is the new way for AI to search data. Its autoindex capability activates agents to know your data without the token waste of grep and sed. One command indexes code, docs, logs and PDFs for search, RAG, security audits and agent memory, using 40x fewer tokens than grep. Elasticsearch compatible, so existing clients just work.

A simple, fast and user-friendly alternative to 'find'

Codebase intelligence for TypeScript and JavaScript. Health, complexity hotspots, duplication, architecture boundaries, circular dependencies, design-system drift, and unused code, from one graph. CLI, GitHub Action, LSP, MCP, and VS Code. Rust, MIT licensed.

Convert Claude Code or Codex into the most intelligent Deep Research Agent. Collect, search, and synthesize web research into a persistent, searchable wiki that builds on itself. Hosted API + MCP: hyperresearch.ai

An open-source, local-first writing workspace where you can write with Claude Code and Codex, drawing on your own sources and past work.

[MLsys2026 Best Paper]: https://arxiv.org/abs/2506.08276. RAG on Everything with LEANN. Enjoy 97% storage savings while running a fast, accurate, and 100% private RAG application on your personal device.

Local-first research memory for Codex: checkpoints, progress ledgers, and Markdown/JSON paper notes. Early alpha.

A lightweight, lightning-fast, in-process vector database

Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search

ScienceBuddy: Recursive-in-Recursive Self-Improvement for Interactive Scientific Agents

The #1 AI Harness for Building Resumes, PDFs, Cover Letters & more, locally with 100+ LLMs support.

grep, but the pattern is a description. Filters lines by meaning with TypeSafe's Jev decision model: ~200 ms and a thousandth of a cent per line.

Android companion app for the NRSuite security research toolkit. Wi-Fi/BLE offense and defense modules, pcap capture, credential management, and ESP32 firmware flashing over USB-OTG.

A new way to see and navigate directory trees

Semantic digital twin and 500-agent simulation laboratory for age-friendly research in historic districts.

Tantivy is a full-text search engine library inspired by Apache Lucene and written in Rust

Addon Manager for Lossless Scaling (LSFG): DLSS 5 Neural Rendering, DLSS, XESS and FSR upscalers with motion measured from the frames, one-click installer, addons you install and tune in one window, live GPU and frame-time view. Tested with World of Warcraft: Forever.