Apache-2.0 context-compression layer that wraps Claude Code, Codex, Cursor, OpenCode, and MCP clients so agents send fewer tool-output and history tokens.
59.1k+
Unknown
7/15/2026
Free (Apache-2.0 open source; optional managed/team rollout available by contacting Headroom Labs)View Details
Runtime authorization and audit layer for coding agents that checks Claude Code, Codex, Cursor, and OpenClaw actions against deterministic policies before they run.
Unknown
Unknown
7/13/2026
Free developer Edge app, CLI, dashboard, and Recon scan; enterprise pricing not publicly listedView Details
MIT-licensed skills framework and software-development methodology that makes Claude Code, Codex, Cursor, OpenCode, Pi, and other coding agents follow spec, TDD, review, and branch workflows.
252.4k+
Unknown
7/12/2026
Free (MIT open source; upstream coding-agent, model, and subscription costs separate)View Details
MIT-licensed engineering skill pack that gives Claude Code, Codex, Cursor, Gemini CLI, OpenCode, and other coding agents repeatable senior-engineer workflows.
75.9k+
Unknown
7/10/2026
Free (MIT open source; upstream coding-agent and model costs separate)View Details
MIT-licensed CLI and agent skill that lets Claude, Codex, Pi, and other coding agents read, redline, comment on, render, and safely edit Word .docx files.
121+
Unknown
7/9/2026
Free (MIT open source; requires Bun for npm install or prebuilt standalone binaries)View Details
Open-source local CLI that indexes coding-agent transcripts from Claude Code, Codex, Cursor, OpenCode, Gemini CLI, Copilot CLI, and related harnesses for cited history search.
Source-available model router that plugs into Claude Code, Codex, opencode, Cursor, and API clients to route each agent request to a cost-appropriate model.
Review-first terminal diff viewer for inspecting agent-authored changesets with multi-file navigation, inline AI notes, watch mode, and Git/Jujutsu/Sapling support.
Google open-source CLI and skill bundle that teaches Claude Code, Codex, Antigravity, and other coding agents to build, evaluate, deploy, and publish ADK agents on Google Cloud.
4.7k+
Unknown
6/30/2026
Free (Apache-2.0 open source; Google Cloud, AI Studio, and model usage costs separate)View Details
DoorDash open-source TUI that turns large feature requests into checkpointed multi-phase coding-agent workflows across Claude Code, Codex, and OpenCode.
45+
Unknown
6/30/2026
Free (Apache-2.0 open source; bring your own Claude Code, Codex, OpenCode, model, and GitHub CLI credentials)View Details
Open-source multi-harness plugin marketplace for shipping agents, skills, commands, and workflows across Claude Code, Codex CLI, Cursor, OpenCode, Gemini CLI, and Copilot.
37.1k+
Unknown
6/22/2026
Free (MIT open source; upstream agent and model costs separate)View Details
Open-source persistent memory layer for Claude Code and other coding agents that captures session observations, compresses them, and injects relevant context back into future work.
CodeBuddy is a Tencent Cloud AI coding assistant supporting MCP protocol, offering code generation, intelligent reviews, and design-to-code conversion across 200+ languages and 15+ IDEs.
Open-source terminal coding agent formerly known as DeepSeek TUI, with Plan/Agent/YOLO modes, MCP support, subagents, LSP diagnostics, and a headless runtime API.
39k+
Unknown
7/3/2026
Free open source (provider and model API costs separate)View Details
Open-source terminal coding agent with a native Go binary, DeepSeek-first cache-aware design, configurable providers, permissions, tools, and MCP-compatible plugins.
26.8k+
Unknown
7/14/2026
Free open source (model provider billing separate)View Details
Agent-native software development workspace for delegating refactors, migrations, incident response, and other repo tasks across IDE, CLI, browser, and chat.
Unknown
3/30/2026
Pro from $20/month; Max $200/month; Enterprise customView Details
Open-source IDE and orchestration layer for AI coding agents, built around keyboard-first Claude Code workflows, parallel sessions, and team-scale context engineering.
10.8k+
Unknown
5/18/2026
Free open source (waitlist for packaged CodeLayer access)View Details
Kilo Code is an open-source AI agent VS Code extension that enhances coding efficiency through code generation, task automation, and intelligent suggestions.
Open-source memory-first coding agent that turns disposable coding sessions into long-lived agents with persistent memory, skills, search, and multi-channel access.
2.5k+
Unknown
5/21/2026
Free open source + optional model/API costsView Details
Open-source plan and code review layer for coding agents that opens browser-based review surfaces, captures inline annotations, and sends structured feedback back into the agent loop.
6.0k+
Unknown
6/8/2026
Free open source (local plugin); hosted Workspaces waitlistView Details
Replit Agent is a browser-based AI software creation agent that turns prompts into full-stack apps, edits code in a hosted workspace, and deploys without local setup.
Open-source CLI and MCP tool that packs whole repositories into AI-friendly formats so coding agents can reason over real codebases with less setup friction.
Open-source AI coding agent for VS Code whose official docs now mark the original extension as shut down, with ZooCode and Cline listed as migration paths.
24.3k
1.7M+
6/26/2026
Marketplace listing is free, but the official docs now say the Roo Code Extension was shut down on May 15, 2026View Details
Open-source frontend coding agent and purpose-built browser that lets developers click live UI, inspect runtime context, and apply changes to real local codebases.
Open-source multi-platform AI coding workflow CLI for structuring specs, tasks, memory, and parallel agent work across tools like Claude Code, Codex, and Cursor.
11.8k+
Unknown
7/6/2026
Free open source (agent, model, API, and subscription costs separate)View Details
Warp is an agentic development environment that combines a modern terminal, built-in and cloud coding agents, and support for external CLI agents like Claude Code, Codex, and Gemini CLI.
Persistent cross-session memory layer for coding agents, with MCP, hooks, and shared recall across Claude Code, Codex CLI, Gemini CLI, OpenClaw, and more.
22.7k+
Unknown
6/14/2026
Free (Apache-2.0 open source; hosting/runtime costs depend on your setup)View Details
Structured product-context web app that gives Claude Code, Cursor, Copilot, and other coding agents a shared picture of goals, decisions, and stories over MCP.
Unknown
6/16/2026
Free for one product line (no card required)View Details
Open-source codebase knowledge graph plugin and dashboard that helps coding agents and humans understand repository structure, business logic, and onboarding flows.
Open-source persistent planning skill and plugin for coding agents that keeps task plans, findings, and progress on disk so work survives /clear, compaction, and crashes.
Open-source meta-harness for running, governing, sharing, and switching between coding agents like Claude Code, Codex, Cursor, OpenCode, Hermes, and Pi.
5.0k+
Unknown
6/27/2026
Free open source (model, subscription, and cloud sandbox costs separate)View Details