head to head · open source
CloudQuery vs flink-cdc
CloudQuery has 6,521 GitHub stars, 558 forks, 166 open issues and last shipped 2 days ago. flink-cdc has 6,477 stars, 2,197 forks, 119 open issues and last shipped 2 days ago. CloudQuery leads on adoption by 1% (6,521 vs 6,477 stars). CloudQuery is written in Go under MPL-2.0; flink-cdc is written in Java under Apache-2.0. CloudQuery has attracted 9% as many forks as stars, flink-cdc 34%. CloudQuery was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (data-integration, elt), so they are genuine substitutes rather than adjacent tools.
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
| CloudQuery | flink-cdc | |
|---|---|---|
| GitHub stars | ★ 6.5K | ★ 6.5K |
| License | MPL-2.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 558 | ⑂ 2.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick CloudQuery if
- You weight community size — 6.5K stars and counting
- You want the MPL-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick flink-cdc if
- You want the flink-cdc 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 flink-cdc fits your workflow better
About CloudQuery
CloudQuery is an open source, Go based cloud asset inventory and ELT tool, licensed under MPL 2.0, that syncs metadata from AWS, Azure, GCP, and more than 70 cloud and SaaS sources into a data warehouse so platform, security, and FinOps teams can query it with SQL.
read the full CloudQuery overview →
About flink-cdc
Flink CDC is an Apache 2.0 streaming data integration tool built on Apache Flink that moves real time and batch data between databases and downstream systems, and it is aimed at data engineers and platform teams who need change data capture pipelines without writing per source job code.
read the full flink-cdc overview →
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Frequently asked questions
Is CloudQuery or flink-cdc more popular?
CloudQuery has 6,521 GitHub stars and flink-cdc has 6,477. CloudQuery has the larger community by that measure.
Are CloudQuery and flink-cdc free?
Both are open source. CloudQuery is licensed under MPL-2.0 and flink-cdc under Apache-2.0. Neither carries a licence fee.
What is the difference between CloudQuery and flink-cdc?
CloudQuery is written in Go and flink-cdc 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, CloudQuery or flink-cdc?
Choose CloudQuery if you want the larger community (6,521 stars) or its MPL-2.0 licence terms. Choose flink-cdc if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.