Top DEVELOPER GitHub Repositories & Tools (2026)

A native macOS terminal app built on Ghostty for running and supervising coding agents

the development environment for pros

Detect breaking changes between OpenAPI 3.0/3.1 specs. Explainable Web UI, CLI and CI gate; local-first and deterministic, with optional AI summaries.

Every coding agent in one desktop workspace. Run Claude Code, OpenAI Codex, Cursor Agent and Grok side by side. Bring your own CLI. Free during beta. Open source as of 21 September 2026 (MIT).

Laminar - open-source observability platform purpose-built for AI agents. YC S24.

Claude Code, Codex and Pi write down everything you do. bough draws it and prices it: a day, the work inside it, every prompt, and what each piece cost. One Go binary, runs on your machine, sends nothing anywhere.

Let your AI coding sessions talk to each other. Coordinate parallel work, exchange reviews, and hand off unfinished work between Claude Code, Codex, and other supported clients. Local-first. Independent sessions.

Fast, Declarative, Reproducible, and Composable Developer Environments using Nix

The why layer of repo-native project memory: the reasoning behind a codebase as Markdown in the repo, versioned by Git, for coding agents and humans, so nothing rejected is proposed twice. No database, no daemon, no account.

Slack CLI for humans and AI agents. Read, send, search and reply across one or many Slack workspaces from the terminal. No Slack app needed.

A native macOS terminal for agent-driven development, built on Ghostty.

A desktop pet for macOS & Windows that monitors your AI coding agents (Claude Code, Codex, Cursor, Gemini...) in real time, and grows as you code, feed it tokens, level it up, climb the leaderboard.

AI pair programming in your terminal — one static binary, sub-ms startup, any model

Local-first macOS app to browse, search, analyze, and resume supported AI coding-agent session history across Codex, Claude Code, OpenCode, Cursor Agent, Antigravity, Hermes, OpenClaw, Copilot CLI, and more.

Stop your AI from making things up — it proposes, deterministic tools decide, every claim checked against ground truth with evidence. Grounded facts and context survive resets. Reverse engineering is the proving ground. MCP server + CLI.

AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 2,400+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.

Streamlit — A faster way to build and share data apps.

High-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds. 158 languages, sub-ms queries, 99% fewer tokens. Single static binary, zero dependencies.

Lightning-fast and Powerful Code Editor written in Rust

Backstage is an open framework for building developer portals