Coding agent directory
AI harnesses compared
31 coding agents from 27 vendors, from terminal tools to cloud agents. Every profile lists its sources.
- harnesses
- 31
- open source
- 16
- for the terminal
- 26
Popularity
How often each harness is searched for, used and mentioned, as an index from 0 to 100.
The most popular AI harnesses
Popularity index from 0 to 100, higher is more popular.
20 of 31 models
Claude Code, Anthropic: 93
Codex CLI, OpenAI: 85
Cursor, Anysphere: 83
GitHub Copilot, GitHub: 81
Google Antigravity, Google: 81
OpenCode, Anomaly: 75
Gemini CLI, Google: 74
Pi, Earendil Inc.: 74
Devin, Cognition: 73
Codex app, OpenAI: 72
Kiro, Amazon Web Services: 72
Warp, Warp: 68
Zed, Zed Industries: 68
Qwen Code, Alibaba: 66
Devin Desktop (formerly Windsurf), Cognition: 65
Roo Code, Roo Code Inc.: 64
Aider, Aider-AI: 64
Kilo Code, Kilo Code: 63
Cline, Cline Bot Inc.: 62
Mistral Vibe, Mistral AI: 59
As of November 4, 2026 · Source: gradually.ai popularity index
Trending harnesses
Harnesses whose popularity score is clearly higher than four weeks ago.As of Nov 5
All AI harnesses
Search, filter by form, status and license, and sort. The form filters count every form of a harness, not just the primary one.
31 of 31 harnesses
Claude CodeAnthropic
Form
Terminal (CLI)
Status
Available
Launched
February 24, 2025
Open source
No
Popularity
93
Entry price
From $20/month with Pro plan ($17 billed annually)
Codex CLIOpenAI
Form
Terminal (CLI)
Status
Available
Launched
April 16, 2025
Open source
Yes, Apache-2.0
Popularity
85
Entry price
From $8/month with Go plan (or API key, usage-based)
CursorAnysphere
Form
Editor
Status
Available
Launched
March 2023
Open source
n/a
Popularity
83
Entry price
From $8/month with Plus plan (free tier available)
GitHub CopilotGitHub
Form
IDE extension
Status
Available
Launched
February 6, 2025
Open source
n/a
Popularity
81
Entry price
From $10/month with Pro plan (free tier available)
Google AntigravityGoogle
Form
Editor
Status
Available
Launched
November 18, 2025
Open source
n/a
Popularity
81
Entry price
Free for individuals
OpenCodeAnomaly
Form
Terminal (CLI)
Status
Available
Launched
May 2025
Open source
Yes, MIT
Popularity
75
Entry price
Free, own API key or free models; Go plan from $10/month
Gemini CLIGoogle
Form
Terminal (CLI)
Status
Available
Launched
June 25, 2025
Open source
Yes, Apache-2.0
Popularity
74
Entry price
Only with Code Assist enterprise license or own API key (usage-based)
PiEarendil Inc.
Form
Terminal (CLI)
Status
Available
Launched
November 2025
Open source
Yes, MIT
Popularity
74
Entry price
Free (MIT), models via your own subscription or API key
DevinCognition
Form
Cloud agent
Status
Available
Launched
March 12, 2024
Open source
n/a
Popularity
73
Entry price
From $20/month with Pro plan (free tier available)
Codex appOpenAI
Form
Desktop app
Status
Available
Launched
February 2, 2026
Open source
n/a
Popularity
72
Entry price
Free tier available, from $8/month with Go plan
KiroAmazon Web Services
Form
Editor
Status
Available
Launched
July 14, 2025
Open source
No
Popularity
72
Entry price
From $20/month with Pro plan (free tier with 50 credits)
WarpWarp
Form
Desktop app
Status
Available
Launched
June 2021
Open source
Yes, AGPL-3.0
Popularity
68
Entry price
From $20/month with Build plan (free tier, bring your own inference)
ZedZed Industries
Form
Editor
Status
Available
Launched
March 15, 2023
Open source
Yes, GPL-3.0-or-later
Popularity
68
Entry price
From $10/month with Pro plan (free with your own API key)
Qwen CodeAlibaba
Form
Terminal (CLI)
Status
Available
Launched
July 22, 2025
Open source
Yes, Apache-2.0
Popularity
66
Entry price
Free, bring your own API key
Devin Desktop (formerly Windsurf)Cognition
Form
Editor
Status
Available
Launched
November 13, 2024
Open source
n/a
Popularity
65
Entry price
From $20/month with Pro plan (free tier available)
Frequently asked questions about AI harnesses
A harness is the software around a language model that turns it into a coding agent. It gives the model the tools to read files, change code and run commands. The directory covers harnesses for the terminal, code editors, IDE extensions, desktop apps and cloud agents.
The directory lists 31 harnesses. By primary form, there are 15 for the terminal, 5 editors, 7 IDE extensions, 2 desktop apps and 2 cloud agents. Many of them are also available in other forms.
In the gradually.ai popularity index, Claude Code leads with 93 out of 100 points, followed by Codex CLI (85) and Cursor (83).
According to their sources, 16 harnesses are open source, namely Aider (Apache-2.0), Cline (Apache-2.0), Codebuff (Apache-2.0), Codex CLI (Apache-2.0), Continue (Apache-2.0), Gemini CLI (Apache-2.0), goose (Apache-2.0), Kilo Code (MIT), Mistral Vibe (Apache-2.0), Oh My Pi (OMP) (MIT), OpenCode (MIT), Pi (MIT), Qwen Code (Apache-2.0), Roo Code (Apache-2.0), Warp (AGPL-3.0) and Zed (GPL-3.0-or-later).
According to their vendors, Aider, Amp, Cline, Factory Droid, goose, Junie, Kilo Code, Mistral Vibe, Oh My Pi (OMP), OpenCode, Pi, Qwen Code, Warp and Zed work with your own API key. For the other harnesses this is not documented or not offered.
26 harnesses offer a command line, namely Aider, Amp, Augment Code, Claude Code, Cline, Codebuff, Codex CLI, Continue, Devin, Factory Droid, Gemini CLI, GitHub Copilot, Google Antigravity, goose, Grok Build, Jules, Junie, Kilo Code, Kiro, Mistral Vibe, Muse Code, Oh My Pi (OMP), OpenCode, Pi, Qwen Code and Warp.
Continue and Roo Code have been discontinued. The profiles stay in the directory so you can look up the last known facts.