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Free Cloud Database Collection
Below is a summary of currently available free-tier cloud database services, suitable for personal development, testing, and small projects.
| No. | Service Name | Official Website Link | Database Type | Free Tier Details | Notes |
|---|---|---|---|---|---|
| 1 | CockroachLabs | https://www.cockroachlabs.com/ | PostgreSQL | $15 free credit per month (equivalent to 50M Request Units + 10 GiB storage) | Requires a credit card; the first month may have a higher quota (e.g., $400); charges apply for overages |
| 2 | Neon | https://neon.com/ | PostgreSQL | 500 MB storage | Projects that are inactive for a long time will be automatically paused (hibernated) and resume after waking |
| 3 | MongoDB Atlas | https://cloud.mongodb.com/ | MongoDB | 512 MB storage (M0 tier) | Free forever; shared cluster; supports connecting from tools such as DBeaver |
| 4 | Supabase | https://supabase.com/ | PostgreSQL | 500 MB storage (per project); you can create multiple projects | Feature-rich dashboard (Auth, Storage, Edge Functions, etc.); widely recommended by the community |
| 5 | Aiven | https://aiven.io/ | PostgreSQL / MySQL / Valkey (Redis-compatible) | PostgreSQL & MySQL: 1 CPU / 1 GB RAM / 5 GB storage; Valkey: 1 CPU / 1 GB RAM | Each of the three databases has an independent free plan; you can enable them simultaneously |
| 6 | TiDB Cloud | https://www.pingcap.com/tidb-cloud/ | MySQL-compatible (distributed) | 25 GB row storage + 25 GB columnar storage + 250M Request Units (RU) per month | Pay-as-you-go model; supports setting a spending cap; can scale down to zero |
| 7 | SQLPub | https://sqlpub.com/ | MySQL | 500 MB storage, 36,000 requests/hour, 30 concurrent connections | Simple and lightweight; suitable for small APIs or testing |
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