Agent / tool directory
Agent harnesses
A curated index of agent harnesses for working with AI models. Each entry lists its GitHub stars (kept fresh by a daily sync), license, and install command, with a per-tool detail page covering model support and platforms. Closed-source tools are marked, not hidden.
Rails benchmark results
Ruby on Rails ran 8 frontier models against 21 real Rails tasks. See the leaderboard, cost-per-outcome curve, and model picks - then choose a harness that surfaces the right Rails APIs.
| Tool | Stars | License | Type |
|---|---|---|---|
|
Moonshot's agentic coding CLI
|
closed-source | - | closed |
|
Z
ZCode
Z.ai's official agentic IDE harness for GLM-5.2
|
closed-source | - | closed |
|
H
Herdr
Persistent runtime that hosts real terminal sessions for coding agents
|
43,007 | Apache 2.0 | open |
|
R
Roo Code
AI agents in your editor (archived May 2026; community forked as ZooCode)
|
24,284 | Apache-2.0 | open |
|
C
Continue
Pioneering open-source coding agent (final 2.0 release; repo read-only)
|
36,161 | Apache-2.0 | open |
|
C
Cline
Autonomous coding agent as an SDK, IDE extension, or CLI
|
70,039 | Apache-2.0 | open |
|
P
Pi
Minimal, extensible terminal coding agent harness
|
113,620 | MIT | open |
|
C
Codex
Lightweight coding agent that runs in your terminal or as a native Linux app
|
128,271 | Apache-2.0 | open |
|
Anthropic's agentic coding CLI
|
closed-source | - | closed |
|
Open-source agentic engineering platform for IDE, CLI, and cloud
|
27,541 | MIT | open |
|
O
OpenCode
AI coding agent for the terminal, desktop, and IDE
|
212,249 | MIT | open |
|
A
Aider
AI pair programming in the terminal
|
49,428 | Apache-2.0 | open |