head to head · open source
Cube vs fluvio
Cube has 21,147 GitHub stars, 2,179 forks, 1,185 open issues and last shipped 2 days ago. fluvio has 5,260 stars, 531 forks, 139 open issues and last shipped 2 days ago. Cube leads on adoption by 302% (21,147 vs 5,260 stars). Cube is written in Rust under a custom or non-standard licence; fluvio is written in Rust under Apache-2.0. Cube has attracted 10% as many forks as stars, fluvio 10%. Cube 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
| Cube | fluvio | |
|---|---|---|
| GitHub stars | ★ 21K | ★ 5.3K |
| License | Custom / other | Apache-2.0 |
| Written in | Rust | Rust |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.2K | ⑂ 531 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Cube if
- You weight community size — 21K stars and counting
- You want the Custom / other license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick fluvio if
- You want the fluvio feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and fluvio fits your workflow better
About Cube
Website • Docs • Examples • Blog • Slack • X Cube Core is the open source semantic layer. Define metrics, dimensions, joins, and access rules once in code, then expose them through SQL, REST, and GraphQL APIs to anything downstream — BI tools, custom applications, or AI agents. Cube Core is headless: it doesn't ship a UI, so you can build the analytics experience that fits your product. Cube Core works with all SQL data sources, including cloud data warehouses like Snowflake, Databricks, and BigQuery; query engines like Presto and Amazon Athena; and application databases like Postgres. It has a built in…
About fluvio
Fluvio Composable, Declarative, Stateful Data Streaming System Fluvio is a lean and mean distributed data streaming engine written in Rust. Combined with Stateful DataFlow distributed stream processing framework, Fluvio provides a unified composable distributed streaming and stream processin g paradigm for developers. Quick Start Get started with Fluvio in 2 minutes or less! Step 1. Download Fluvio Version Manager: Fluvio is installed via the Fluvio Version Manager , shortened to fvm . To install fvm , run the following command: TEMPORARY NOTE : While we are transitioning to a new fluvio community hosted fluvio…
read the full fluvio overview →
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Frequently asked questions
Is Cube or fluvio more popular?
Cube has 21,147 GitHub stars and fluvio has 5,260. Cube has the larger community by that measure.
Are Cube and fluvio free?
Both are open source. Cube has no licence declared in this registry, and fluvio is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Cube and fluvio?
Cube is written in Rust and fluvio in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Cube or fluvio?
Choose Cube if you want the larger community (21,147 stars) or its Custom / other licence terms. Choose fluvio if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.