head to head · open source
orm vs TDengine
orm has 47,640 GitHub stars, 2,538 forks, 2,627 open issues and last shipped 2 days ago. TDengine has 25,129 stars, 5,021 forks, 434 open issues and last shipped 3 days ago. orm leads on adoption by 90% (47,640 vs 25,129 stars). orm is written in TypeScript under Apache-2.0; TDengine is written in C under AGPL-3.0. orm has attracted 5% as many forks as stars, TDengine 20%. orm 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 | TDengine | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 25K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | TypeScript | C |
| Last push | 2026-09-18 | 2026-09-17 |
| Forks | ⑂ 2.5K | ⑂ 5.0K |
| 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 TDengine if
- You want the TDengine feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches C
- You evaluated both and TDengine fits your workflow better
About orm
Prisma ORM is a next generation TypeScript ORM for Node.js and TypeScript applications, supporting PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB, and CockroachDB, and it is aimed at developers and teams building data backed applications in that ecosystem.
About TDengine
TDengine is an open source, cloud native time series database written in C and licensed under AGPL 3.0, designed for IoT, connected car and Industrial IoT workloads that ingest TB and even PB scale data per day from billions of sensors and data collectors.
read the full TDengine overview →
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Frequently asked questions
Is orm or TDengine more popular?
orm has 47,640 GitHub stars and TDengine has 25,129. orm has the larger community by that measure.
Are orm and TDengine free?
Both are open source. orm is licensed under Apache-2.0 and TDengine under AGPL-3.0. Neither carries a licence fee.
What is the difference between orm and TDengine?
orm is written in TypeScript and TDengine in C. 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 TDengine?
Choose orm if you want the larger community (47,640 stars) or its Apache-2.0 licence terms. Choose TDengine if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.