| Rank | Change | 2025 Jun | Project | Features | Stars | Activity | Rating |
|---|---|---|---|---|---|---|---|
| 1 | - | 1 | Elasticsearch | Search Engine | 76,827 | 10.0 | 8.29% |
| 2 | - | 2 | Redis | Key-value | 74,716 | 9.8 | 8.06% |
| 3 | - | 3 | prometheus | Time Series | 64,324 | 9.9 | 6.94% |
| 4 | - | 4 | etcd | Key-value | 51,775 | 9.9 | 5.59% |
| 5 | - | 5 | ClickHouse | Column | 47,849 | 10.0 | 5.16% |
| 6 | ↑↑ | 8 | Milvus | Search Engine Vector | 44,649 | 10.0 | 4.82% |
| 7 | ↓ | 6 | Apache Spark | Relational | 43,387 | 10.0 | 4.68% |
| 8 | ↓ | 7 | LevelDB | Key-value | 39,113 | 3.6 | 4.22% |
| 9 | ↑ | 10 | DuckDB | Relational | 38,597 | 10.0 | 4.17% |
| 10 | ↓ | 9 | cockroach | Relational | 32,187 | 10.0 | 3.47% |
| 11 | ↑ | 12 | RocksDB | Key-value | 31,728 | 9.7 | 3.42% |
| 12 | ↓ | 11 | InfluxDB | Time Series | 31,531 | 9.3 | 3.40% |
| 13 | - | 13 | MongoDB | Document | 28,343 | 10.0 | 3.06% |
| 14 | - | 14 | RethinkDB | Document | 27,001 | 5.0 | 2.91% |
| 15 | - | 15 | TimescaleDB | Time Series | 22,824 | 9.8 | 2.46% |
| 16 | - | 16 | PostgreSQL | Relational | 21,085 | 10.0 | 2.28% |
| 17 | - | 17 | PouchDB | Document | 17,574 | 8.6 | 1.90% |
| 18 | ↑↑ | 20 | QuestDB | Time Series | 17,017 | 9.8 | 1.84% |
| 19 | - | 19 | Presto | Relational | 16,710 | 9.9 | 1.80% |
| 20 | ↑ | 21 | Neo4j | Graph | 16,653 | 0.0 | 1.80% |
| 21 | ↓↓↓ | 18 | Realm | Relational | 16,607 | 7.3 | 1.79% |
| 22 | - | 22 | Memcached | Key-value | 14,195 | 7.0 | 1.53% |
| 23 | - | 23 | ArangoDB | Graph Document | 14,194 | 9.9 | 1.53% |
| 24 | - | 24 | KeyDB | Key-value | 12,479 | 7.6 | 1.35% |
| 25 | - | 25 | MySQL | Relational | 12,279 | 9.8 | 1.33% |
| 26 | - | 26 | Apache Cassandra | Column | 9,752 | 9.8 | 1.05% |
| 27 | ↑ | 28 | SQLite | Relational | 9,750 | 0.0 | 1.05% |
| 28 | ↓ | 27 | SSDB | Key-value | 8,345 | 0.0 | 0.90% |
| 29 | ↑↑ | 31 | MariaDB | Relational | 7,689 | 9.9 | 0.83% |
| 30 | ↓ | 29 | CouchDB | Document | 6,890 | 9.7 | 0.74% |
| 31 | ↓ | 30 | Hazelcast | Relational | 6,573 | 9.9 | 0.71% |
| 32 | - | 32 | Graphite | Time Series | 6,091 | 7.6 | 0.66% |
| 33 | - | 33 | Apache Hive | Relational | 5,970 | 9.6 | 0.64% |
| 34 | - | 34 | Apache HBase | Column | 5,535 | 9.7 | 0.60% |
| 35 | - | 35 | Apache Ignite | Key-value Relational | 5,065 | 9.8 | 0.55% |
| 36 | - | 36 | OrientDB | Key-value Document | 4,963 | 9.6 | 0.54% |
| 37 | - | 37 | H2 | Relational | 4,600 | 8.4 | 0.50% |
| 38 | ↑↑↑ | 41 | Apache AGE | Graph Relational | 4,572 | 8.4 | 0.49% |
| 39 | - | 39 | Hive | Key-value | 4,394 | 4.5 | 0.47% |
| 40 | ↓↓ | 38 | Apache Solr | Search Engine | 4,367 | 0.0 | 0.47% |
| 41 | ↓ | 40 | RavenDB | Document | 3,951 | 10.0 | 0.43% |
| 42 | - | 42 | Ehcache | Key-value | 2,082 | 7.5 | 0.22% |
| 43 | - | 43 | Sphinx | Search Engine | 1,832 | 0.0 | 0.20% |
| 44 | - | 44 | Firebird | Relational | 1,433 | 9.9 | 0.15% |
| 45 | ↑↑ | 47 | Aerospike | Key-value NoSQL | 1,349 | 9.0 | 0.15% |
| 46 | ↓ | 45 | Infinispan | Key-value | 1,328 | 9.9 | 0.14% |
| 47 | ↓ | 46 | Apache Impala | Relational | 1,276 | 9.7 | 0.14% |
| 48 | - | 48 | Apache Accumulo | Column | 1,146 | 9.8 | 0.12% |
| 49 | - | 49 | RRDtool | Time Series | 1,098 | 5.2 | 0.12% |
| 50 | - | 50 | Apache Phoenix | Relational | 1,059 | 9.1 | 0.11% |
If you think we are missing a Open-Source Database or would like to make a correction or a suggegestion, please do not hesitate to contact us.
Note that this is an alternative DB-Engines ranking focused on open-source databases only.