head to head · open source
Ladybird vs kysely
Ladybird has 66,237 GitHub stars, 3,163 forks, 535 open issues and last shipped yesterday. kysely has 14,233 stars, 444 forks, 173 open issues and last shipped yesterday. Ladybird leads on adoption by 365% (66,237 vs 14,233 stars). Ladybird is written in C++ under BSD-2-Clause; kysely is written in TypeScript under MIT. Ladybird has attracted 5% as many forks as stars, kysely 3%. Ladybird was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (browser), 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
| Ladybird | kysely | |
|---|---|---|
| GitHub stars | ★ 66K | ★ 14K |
| License | BSD-2-Clause | MIT |
| Written in | C++ | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 3.2K | ⑂ 444 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Ladybird if
- You weight community size — 66K stars and counting
- You want the BSD-2-Clause license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick kysely if
- You want the kysely feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and kysely fits your workflow better
About Ladybird
Ladybird is a truly independent web browser and browser engine, written from scratch in C++ rather than as a fork of any existing engine, and it is built for developers who want to work on a browser engine based on web standards while it remains in a pre alpha state.
read the full Ladybird overview →
About kysely
Kysely is a type safe TypeScript SQL query builder for Node.js, Deno, Bun, and the browser. It provides a fluent API to construct and execute type safe SQL queries, preventing runtime errors from invalid column names or incorrect data types. The core problem it solves is eliminating the fragility of raw SQL strings and the lack of type safety in many ORMs within the TypeScript ecosystem.
read the full kysely overview →
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Frequently asked questions
Is Ladybird or kysely more popular?
Ladybird has 66,237 GitHub stars and kysely has 14,233. Ladybird has the larger community by that measure.
Are Ladybird and kysely free?
Both are open source. Ladybird is licensed under BSD-2-Clause and kysely under MIT. Neither carries a licence fee.
What is the difference between Ladybird and kysely?
Ladybird is written in C++ and kysely in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Ladybird or kysely?
Choose Ladybird if you want the larger community (66,237 stars) or its BSD-2-Clause licence terms. Choose kysely if its feature set, stack or MIT licence fits better. Both are self-hostable.