head to head · open source
orm vs Apache IoTDB
orm has 47,661 GitHub stars, 2,605 forks, 2,627 open issues and last shipped 2 days ago. Apache IoTDB has 6,426 stars, 1,163 forks, 734 open issues and last shipped yesterday. orm leads on adoption by 642% (47,661 vs 6,426 stars). orm is written in TypeScript under Apache-2.0; Apache IoTDB is written in Java under Apache-2.0. orm has attracted 5% as many forks as stars, Apache IoTDB 18%. Apache IoTDB was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (database), 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
| orm | Apache IoTDB | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 6.4K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | TypeScript | Java |
| Last push | 2026-11-03 | 2026-11-04 |
| Forks | ⑂ 2.6K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick orm if
- You weight community size — 48K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Apache IoTDB if
- You want the Apache IoTDB 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 IoTDB fits your workflow better
About orm
Docs Discord X Blog Post Architecture Using Prisma 7? It remains fully supported. Its source lives on the v7 branch of this repository and its docs at prisma.io/docs/orm/v7. Prisma 8 is a release candidate. 8.0.0 final is expected in the next four to eight weeks. Until then a release candidate may include breaking changes, and every release ships with an upgrade recipe that the prisma 8 skill applies for you. The candidate is a complete implementation we stand behind: we treat bugs in it as urgent, and the risk you take on is a feature that is not built yet rather than churn. The feature scoreboard names every…
About Apache IoTDB
English 中文 IoTDB Overview IoTDB (Internet of Things Database) is a data management system for time series data, which provides users with specific services, including data collection, storage and analysis. Due to its lightweight structure, high performance and usable features, together with its seamless integration with the Hadoop and Spark ecosystem, IoTDB meets the requirements of massive dataset storage, high throughput data input, and complex data analysis in the industrial IoT field. Click for More Information IoTDB depends on TsFile which is a columnar storage file format designed for time series data. The…
read the full Apache IoTDB overview →
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Frequently asked questions
Is orm or Apache IoTDB more popular?
orm has 47,661 GitHub stars and Apache IoTDB has 6,426. orm has the larger community by that measure.
Are orm and Apache IoTDB free?
Both are open source. orm is licensed under Apache-2.0 and Apache IoTDB under Apache-2.0. Neither carries a licence fee.
What is the difference between orm and Apache IoTDB?
orm is written in TypeScript and Apache IoTDB 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, orm or Apache IoTDB?
Choose orm if you want the larger community (47,661 stars) or its Apache-2.0 licence terms. Choose Apache IoTDB if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.