Repo Compare › Analytics databases
ClickHouse vs TimescaleDB vs QuestDB
A side-by-side look at how actively ClickHouse, TimescaleDB and QuestDB are developed on GitHub — popularity, contributor base, commit activity and how quickly issues and pull requests move.
What the numbers say
- ClickHouse is the most-starred of the 3, with 50k stars — about 2.9× QuestDB's 17k.
- Over the 52 weeks to the snapshot, ClickHouse recorded the most commits (99k), against 861 for QuestDB.
- ClickHouse has closed or merged the most pull requests in its lifetime: 87k.
- Relative to its popularity, TimescaleDB carries the lightest open-issue load: 15.1 open issues per 1,000 stars, versus 110.1 for ClickHouse.
Head-to-head
Snapshot taken 30 September 2026.
| Metric | ClickHouse Slowing | TimescaleDB Active | QuestDB Active |
|---|---|---|---|
| Stars | 50k | 24k | 17k |
| Forks | 9.0k | 1.2k | 1.7k |
| Contributors | 3.3k | 141 | 186 |
| Commits, last 52 weeks | 99k | 1.2k | 861 |
| Open issues | 5.5k | 357 | 805 |
| Open pull requests | 2.6k | 52 | 184 |
| Closed / merged PRs | 87k | 7.1k | 4.9k |
| Watchers | 696 | 311 | 139 |
| Last push | 30 Sep 2026 | 30 Sep 2026 | 30 Sep 2026 |
| Latest release | v26.9.6.6-stable (Sep 2026) | 2.30.2 (Sep 2026) | 10.0.1 (Aug 2026) |
| Main language | C++ | C | Java |
| Licence | Apache-2.0 | Not detected by GitHub | Apache-2.0 |
| Created | Jun 2016 | Mar 2017 | Apr 2014 |
The wide bar is that repository’s share of the largest value in its own row — half the length means half the number. The thin gauge beneath it is the same row rescaled from its smallest value to its largest, which makes a close gap such as 61k against 59k visible; on that gauge the row’s lowest value always sits at zero however big it is, so read it as a spread and never as a quantity. Bars compare repositories with each other and never one metric against another. Colour identifies the repository, matching the dot beside its name. On the two issue rows a longer bar means more open work, which is usually the opposite of better. The highlighted cell is the highest value in a row. “Active / Slowing / Dormant” is a simple heuristic from how recently code was pushed and open issues per star — a starting point, not a verdict. Stars measure popularity, not quality.
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