head to head · open source
etcd vs Apache Druid
etcd has 52,270 GitHub stars, 10,504 forks, 351 open issues and last shipped yesterday. Apache Druid has 14,054 stars, 3,789 forks, 784 open issues and last shipped yesterday. etcd leads on adoption by 272% (52,270 vs 14,054 stars). etcd is written in Go under Apache-2.0; Apache Druid is written in Java under Apache-2.0. etcd has attracted 20% as many forks as stars, Apache Druid 27%. etcd 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
| etcd | Apache Druid | |
|---|---|---|
| GitHub stars | ★ 52K | ★ 14K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 11K | ⑂ 3.8K |
| 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 Apache Druid if
- You want the Apache Druid feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and Apache Druid 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 Apache Druid
Apache Druid is a high performance, open source real time analytics database written in Java and licensed under Apache 2.0, built for teams that need sub second OLAP queries and fast ingest for UIs, operational queries, and high concurrency workloads.
read the full Apache Druid overview →
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Frequently asked questions
Is etcd or Apache Druid more popular?
etcd has 52,270 GitHub stars and Apache Druid has 14,054. etcd has the larger community by that measure.
Are etcd and Apache Druid free?
Both are open source. etcd is licensed under Apache-2.0 and Apache Druid under Apache-2.0. Neither carries a licence fee.
What is the difference between etcd and Apache Druid?
etcd is written in Go and Apache Druid in Java. 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 Apache Druid?
Choose etcd if you want the larger community (52,270 stars) or its Apache-2.0 licence terms. Choose Apache Druid if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.