head to head · open source
opcode vs pyrefly
opcode has 22,437 GitHub stars, 1,700 forks, 332 open issues and last shipped 6 days ago. pyrefly has 7,197 stars, 599 forks, 694 open issues and last shipped yesterday. opcode leads on adoption by 212% (22,437 vs 7,197 stars). opcode is written in TypeScript under AGPL-3.0; pyrefly is written in Rust under MIT. opcode has attracted 8% as many forks as stars, pyrefly 8%. pyrefly was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ide), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| opcode | pyrefly | |
|---|---|---|
| GitHub stars | ★ 22K | ★ 7.2K |
| License | AGPL-3.0 | MIT |
| Written in | TypeScript | Rust |
| Last push | 2026-11-06 | 2026-11-11 |
| Forks | ⑂ 1.7K | ⑂ 599 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick opcode if
- You weight community size — 22K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick pyrefly if
- You want the pyrefly feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and pyrefly fits your workflow better
About opcode
opcode A powerful GUI app and Toolkit for Claude Code Create custom agents, manage interactive Claude Code sessions, run secure background agents, and more. [!TIP] ⭐ Star the repo and follow @getAsterisk on X for early access to asteria swe v0 . [!NOTE] This project is not affiliated with, endorsed by, or sponsored by Anthropic. Claude is a trademark of Anthropic, PBC. This is an independent developer project using Claude. 🌟 Overview opcode is a powerful desktop application that transforms how you interact with Claude Code. Built with Tauri 2, it provides a beautiful GUI for managing your Claude Code sessions…
read the full opcode overview →
About pyrefly
Pyrefly: A fast type checker and language server for Python with powerful IDE features Pyrefly is a type checker and language server for Python, which provides lightning fast type checking along with IDE features such as code navigation, semantic highlighting, and code completion. It is available as a command line tool and an extension for popular IDEs and editors such as VSCode, Neovim, Zed, and more. See the Pyrefly website for full documentation and how to add Pyrefly to your editor of choice. Pyrefly's current development status is stable. Key Features Fast. Pyrefly checks over 1.85 million lines of code per…
read the full pyrefly overview →
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Frequently asked questions
Is opcode or pyrefly more popular?
opcode has 22,437 GitHub stars and pyrefly has 7,197. opcode has the larger community by that measure.
Are opcode and pyrefly free?
Both are open source. opcode is licensed under AGPL-3.0 and pyrefly under MIT. Neither carries a licence fee.
What is the difference between opcode and pyrefly?
opcode is written in TypeScript and pyrefly in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, opcode or pyrefly?
Choose opcode if you want the larger community (22,437 stars) or its AGPL-3.0 licence terms. Choose pyrefly if its feature set, stack or MIT licence fits better. Both are self-hostable.