See also:
| Service | Type | Limitations |
|---|---|---|
| Amazon DynamoDB | Proprietary NoSQL | 25 GB of storage |
| Amazon RDS | Proprietary RDBMS | Only free for 1 year |
| Azure SQL Database | MS SQL Server | Only free for 1 year |
| ElephantSQL | PostgreSQL | 20 MB of storage |
| Google Cloud Firestore | Proprietary NoSQL | 1 GB storage After the first year there's no way to avoid accidental overage fees |
| Heroku Postgres | PostgreSQL | 10K max rows |
| IBM Cloud Cloudant | Proprietary NoSQL | 1 GB of storage deleted after 30 days of no activity |
| IBM Cloud Db2 | Db2 | 200 MB of storage |
| MongoDB Atlas | MongoDB | 512 MB of storage |
| OpenShift Online v3 | MongoDB, MariaDB, MySQL, PostgreSQL, Redis | Free subscriptions expire after 60 days (can resubscribe for free but not extend subscription) 2 GB of persistent storage Idling after 30 minutes inactivity, hibernates 18 out of 72 hours |
| Redis Enterprise | Redis | 30 MB of storage |
| Scalingo | PostgreSQL |