head to head · open source
openapi-generator vs Tailcall
openapi-generator has 26,848 GitHub stars, 7,751 forks, 5,820 open issues and last shipped 2 days ago. Tailcall has 7,633 stars, 1,456 forks, 45 open issues and last shipped 2 days ago. openapi-generator leads on adoption by 252% (26,848 vs 7,633 stars). openapi-generator is written in Java under Apache-2.0; Tailcall is written in Rust under Apache-2.0. openapi-generator has attracted 29% as many forks as stars, Tailcall 19%. openapi-generator was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| openapi-generator | Tailcall | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 7.6K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Java | Rust |
| Last push | 2026-11-03 | 2026-11-03 |
| Forks | ⑂ 7.8K | ⑂ 1.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick openapi-generator if
- You weight community size — 27K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick Tailcall if
- You want the Tailcall feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and Tailcall fits your workflow better
About openapi-generator
OpenAPI Generator Master ( 7.28.0 ): :star::star::star: If you would like to contribute, please refer to guidelines and a list of open tasks. :star::star::star: :bangbang: To migrate from Swagger Codegen to OpenAPI Generator, please refer to the migration guide :bangbang: :notebook with decorative cover: For more information, please refer to the Wiki page and FAQ :notebook with decorative cover: :notebook with decorative cover: The eBook A Beginner's Guide to Code Generation for REST APIs is a good starting point for beginners :notebook with decorative cover: :warning: If the OpenAPI spec, templates or any input…
read the full openapi-generator overview →
About Tailcall
⚒️ Forge: AI Enhanced Terminal Development Environment A comprehensive coding agent that integrates AI capabilities with your development environment curl fsSL sh Table of Contents Quickstart Usage Examples Why Forge? How Forge Works: Three Modes Interactive Mode (TUI) One Shot CLI Mode ZSH Plugin Mode ( : prefix) ZSH Plugin: The : Prefix System Agents Sending Prompts Attaching Files Conversation Management Git Integration Shell Command Tools Session & Configuration Skills Customizing Agent Behavior Semantic Search (Workspace) Quick Reference: All : Commands Command Line Options Advanced Configuration Provider…
read the full Tailcall overview →
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Frequently asked questions
Is openapi-generator or Tailcall more popular?
openapi-generator has 26,848 GitHub stars and Tailcall has 7,633. openapi-generator has the larger community by that measure.
Are openapi-generator and Tailcall free?
Both are open source. openapi-generator is licensed under Apache-2.0 and Tailcall under Apache-2.0. Neither carries a licence fee.
What is the difference between openapi-generator and Tailcall?
openapi-generator is written in Java and Tailcall 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, openapi-generator or Tailcall?
Choose openapi-generator if you want the larger community (26,848 stars) or its Apache-2.0 licence terms. Choose Tailcall if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.