head to head · open source
mcp-toolbox vs Apache Druid
mcp-toolbox has 16,443 GitHub stars, 1,727 forks, 292 open issues and last shipped yesterday. Apache Druid has 14,054 stars, 3,789 forks, 784 open issues and last shipped yesterday. mcp-toolbox leads on adoption by 17% (16,443 vs 14,054 stars). mcp-toolbox is written in Go under Apache-2.0; Apache Druid is written in Java under Apache-2.0. mcp-toolbox has attracted 11% as many forks as stars, Apache Druid 27%. mcp-toolbox 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
| mcp-toolbox | Apache Druid | |
|---|---|---|
| GitHub stars | ★ 16K | ★ 14K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 1.7K | ⑂ 3.8K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick mcp-toolbox if
- You weight community size — 16K 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 mcp-toolbox
MCP Toolbox for Databases is an open source Model Context Protocol (MCP) server, written in Go and licensed under Apache 2.0, that connects AI agents, IDEs, and applications directly to enterprise databases.
read the full mcp-toolbox overview →
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 mcp-toolbox or Apache Druid more popular?
mcp-toolbox has 16,443 GitHub stars and Apache Druid has 14,054. mcp-toolbox has the larger community by that measure.
Are mcp-toolbox and Apache Druid free?
Both are open source. mcp-toolbox is licensed under Apache-2.0 and Apache Druid under Apache-2.0. Neither carries a licence fee.
What is the difference between mcp-toolbox and Apache Druid?
mcp-toolbox 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, mcp-toolbox or Apache Druid?
Choose mcp-toolbox if you want the larger community (16,443 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.