head to head · open source
whodb vs ReplicaDB
whodb has 5,033 GitHub stars, 240 forks, 42 open issues and last shipped today. ReplicaDB has 500 stars, 114 forks, 4 open issues and last shipped 3 days ago. whodb leads on adoption by 907% (5,033 vs 500 stars). whodb is written in Go under Apache-2.0; ReplicaDB is written in Java under Apache-2.0. whodb has attracted 5% as many forks as stars, ReplicaDB 23%. whodb 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
| whodb | ReplicaDB | |
|---|---|---|
| GitHub stars | ★ 5.0K | ★ 500 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-09-20 | 2026-09-17 |
| Forks | ⑂ 240 | ⑂ 114 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick whodb if
- You weight community size — 5.0K 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 ReplicaDB if
- You want the ReplicaDB 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 ReplicaDB fits your workflow better
About whodb
WhoDB is an Apache 2.0, Go based open source data workspace that gives users one place to explore databases, edit data, run queries, and understand how a schema fits together. It runs in the browser, is available as a desktop application, and also provides a terminal CLI, so it fits the open source data engineering and integration ecosystem for internal tools, data platforms, database management, data governance, data integration, data pipelines, data catalogs, data lineage, and ER diagrams.
read the full whodb overview →
About ReplicaDB
ReplicaDB is an open source, Apache 2.0 licensed command line tool written in Java that performs high performance bulk data replication between heterogeneous relational and non relational databases, and it is aimed at data engineers and operations teams who need repeatable batch transfers without installing database agents or triggers.
read the full ReplicaDB overview →
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Frequently asked questions
Is whodb or ReplicaDB more popular?
whodb has 5,033 GitHub stars and ReplicaDB has 500. whodb has the larger community by that measure.
Are whodb and ReplicaDB free?
Both are open source. whodb is licensed under Apache-2.0 and ReplicaDB under Apache-2.0. Neither carries a licence fee.
What is the difference between whodb and ReplicaDB?
whodb is written in Go and ReplicaDB 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, whodb or ReplicaDB?
Choose whodb if you want the larger community (5,033 stars) or its Apache-2.0 licence terms. Choose ReplicaDB if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.