head to head · open source
etcd vs bun
etcd has 52,270 GitHub stars, 10,506 forks, 351 open issues and last shipped yesterday. bun has 4,976 stars, 307 forks, 38 open issues and last shipped 29 days ago. etcd leads on adoption by 950% (52,270 vs 4,976 stars). etcd is written in Go under Apache-2.0; bun is written in Go under BSD-2-Clause. etcd has attracted 20% as many forks as stars, bun 6%. etcd was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (database, go), 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
| etcd | bun | |
|---|---|---|
| GitHub stars | ★ 52K | ★ 5.0K |
| License | Apache-2.0 | BSD-2-Clause |
| Written in | Go | Go |
| Last push | 2026-09-18 | 2026-08-21 |
| Forks | ⑂ 11K | ⑂ 307 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick etcd if
- You weight community size — 52K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick bun if
- You want the bun feature set and don't need the biggest community
- You prefer the BSD-2-Clause license terms
- Your stack matches Go
- You evaluated both and bun fits your workflow better
About etcd
etcd is an Apache 2.0 licensed, Go written distributed key value store that holds the most critical data of a distributed system in a Raft replicated log, aimed at the platform and infrastructure engineers who must keep that control plane data consistent and available.
About bun
Bun is a lightweight, SQL first object relational mapper for Go that gives backend engineers type safe access to PostgreSQL, MySQL/MariaDB, MSSQL, SQLite, and Oracle from one database agnostic codebase.
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Frequently asked questions
Is etcd or bun more popular?
etcd has 52,270 GitHub stars and bun has 4,976. etcd has the larger community by that measure.
Are etcd and bun free?
Both are open source. etcd is licensed under Apache-2.0 and bun under BSD-2-Clause. Neither carries a licence fee.
What is the difference between etcd and bun?
etcd is written in Go and bun in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, etcd or bun?
Choose etcd if you want the larger community (52,270 stars) or its Apache-2.0 licence terms. Choose bun if its feature set, stack or BSD-2-Clause licence fits better. Both are self-hostable.