KVdb.io vs SuperMassive
KVdb.io
kvdb.io
SuperMassive
supermassivedb.comSide by side
| Figure | KVdb.io | SuperMassive |
|---|---|---|
| Price from | $19/mo | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 3 | 1 |
| Spec score · Key-Value Databases | 7.8 (#11) | 7.6 (#15) |
| Data operations | The REST API supports storing arbitrary key-value data, reading and deleting keys, listing keys, and updating numeric counters. | Supported commands include PUT, GET, DEL, INCR, DECR, REGX, STAT, RCNF, and PING. |
| Product | KVdb describes itself as a key-value database and web API for serverless apps, prototyping, metrics, and other uses. | SuperMassive is an open-source distributed key-value database designed for in-memory operations, durability, and low latency. |
| Support | The pricing page directs users with questions to email and says the team will get back to them as soon as possible. | The repository invites users to join its Discord server to talk with maintainers and other users. |
Plans
In their own words
SuperMassive
SuperMassive is a self-hosted, open-source key-value database built for in-memory work, durability, and low latency. It spreads data across shards, and additional nodes can expand capacity horizontally. Writes rotate among primary nodes in sequence; reads run in parallel across primaries and, when needed, replicas. The project describes automatic failover and recovery when a node fails. Timestamp-based versioning settles conflicts in favor of the latest value. Commands include PUT, GET, DEL, INCR, DECR, REGX, STAT, RCNF, and PING. Nodes journal operations, while replicas copy any missing journal entries from their primary. Client connections use username-and-password authentication; nodes can use shared keys, and TLS is optional. Linux, macOS, and Windows builds are available as binaries or source, under the BSD-3-Clause license. The README identifies two limits: no transactions and only one user. GitHub marks the repository archived and read-only as of May 6, 2026.