head to head · open source
whodb vs ReplicaDB
whodb has 5,049 GitHub stars, 241 forks, 42 open issues and last shipped yesterday. ReplicaDB has 504 stars, 113 forks, 4 open issues and last shipped 10 days ago. whodb leads on adoption by 902% (5,049 vs 504 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 22%. 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 | ★ 504 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-11-04 | 2026-10-26 |
| Forks | ⑂ 241 | ⑂ 113 |
| 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 A lightweight, self hosted workspace for your databases Available on Quick start · Documentation · Live demo · Community WhoDB gives you one place to explore your databases, edit data, run queries, and understand how a schema fits together. It runs in the browser, is easy to self host, and is available as a desktop app or terminal CLI too. Use it when you want to inspect a local database, help a teammate explore unfamiliar data, or work without installing a heavyweight database client. AI features are optional: connect Ollama, OpenAI, Anthropic, LM Studio, or another OpenAI compatible provider if you want…
read the full whodb overview →
About ReplicaDB
ReplicaDB is a high performance, open source command line tool for bulk data replication between heterogeneous databases. It enables efficient ETL/ELT workflows by transferring data in parallel between Oracle, PostgreSQL, MySQL, MongoDB, SQL Server, and other databases without requiring database agents or triggers. ReplicaDB supports a wide range of data sources including relational databases (Oracle, PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, IBM DB2 LUW and DB2 for i), NoSQL databases (MongoDB), data virtualization platforms (Denodo), file formats (CSV), cloud storage (Amazon S3), and streaming platforms…
read the full ReplicaDB overview →
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Frequently asked questions
Is whodb or ReplicaDB more popular?
whodb has 5,049 GitHub stars and ReplicaDB has 504. 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 (5,049 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.