| Rank | Change | 2021 Nov | Project | Features | Stars | Activity | Rating |
|---|---|---|---|---|---|---|---|
| 1 | - | 1 | Elasticsearch | Search Engine | 61,962 | 10.0 | 9.64% |
| 2 | - | 2 | Redis | Key-value | 57,667 | 9.8 | 8.97% |
| 3 | - | 3 | prometheus | Time Series | 45,583 | 9.8 | 7.09% |
| 4 | - | 4 | etcd | Key-value | 41,906 | 9.9 | 6.52% |
| 5 | - | 5 | Apache Spark | Relational | 34,423 | 10.0 | 5.35% |
| 6 | - | 6 | LevelDB | Key-value | 31,258 | 5.5 | 4.86% |
| 7 | ↑↑ 5 | 12 | ClickHouse | Column | 26,167 | 10.0 | 4.07% |
| 8 | - | 8 | cockroach | Relational | 26,110 | 10.0 | 4.06% |
| 9 | ↓↓ | 7 | RethinkDB | Document | 25,778 | 9.0 | 4.01% |
| 10 | ↓ | 9 | InfluxDB | Time Series | 24,504 | 9.4 | 3.81% |
| 11 | ↓ | 10 | RocksDB | Key-value | 24,025 | 9.9 | 3.74% |
| 12 | ↓ | 11 | MongoDB | Document | 22,810 | 10.0 | 3.55% |
| 13 | - | 13 | Realm | Relational | 15,646 | 9.4 | 2.43% |
| 14 | - | 14 | PouchDB | Document | 15,366 | 7.5 | 2.39% |
| 15 | - | 15 | Presto | Relational | 14,204 | 9.9 | 2.21% |
| 16 | - | 16 | TimescaleDB | Time Series | 14,076 | 9.6 | 2.19% |
| 17 | - | 17 | ArangoDB | Graph Document | 12,679 | 9.9 | 1.97% |
| 18 | - | 18 | Memcached | Key-value | 12,262 | 8.2 | 1.91% |
| 19 | ↑ | 20 | PostgreSQL | Relational | 11,344 | 10.0 | 1.76% |
| 20 | ↓ | 19 | Neo4j | Graph | 10,665 | 10.0 | 1.66% |
| 21 | ↑ | 22 | QuestDB | Time Series | 9,717 | 9.6 | 1.51% |
| 22 | ↑ | 23 | MySQL | Relational | 8,499 | 9.9 | 1.32% |
| 23 | ↓↓ | 21 | SSDB | Key-value | 7,972 | 0.0 | 1.24% |
| 24 | - | 24 | Apache Cassandra | Column | 7,673 | 9.7 | 1.19% |
| 25 | ↑↑ | 27 | KeyDB | Key-value | 5,929 | 9.3 | 0.92% |
| 26 | ↓ | 25 | Graphite | Time Series | 5,562 | 5.0 | 0.87% |
| 27 | ↓ | 26 | CouchDB | Document | 5,498 | 9.6 | 0.86% |
| 28 | - | 28 | Greenplum | Relational | 5,482 | 9.9 | 0.85% |
| 29 | - | 29 | Hazelcast | Relational | 5,120 | 9.9 | 0.80% |
| 30 | ↑ | 31 | Apache HBase | Column | 4,705 | 9.8 | 0.73% |
| 31 | ↑↑ | 33 | MariaDB | Relational | 4,557 | 9.9 | 0.71% |
| 32 | ↑↑↑ | 35 | Apache Hive | Relational | 4,547 | 9.7 | 0.71% |
| 33 | ↓↓↓ | 30 | OrientDB | Key-value Document | 4,527 | 9.6 | 0.70% |
| 34 | - | 34 | Apache Ignite | Key-value Relational | 4,330 | 9.8 | 0.67% |
| 35 | ↓↓↓ | 32 | Apache Solr | Search Engine | 4,307 | 0.0 | 0.67% |
| 36 | - | 36 | H2 | Relational | 3,525 | 9.4 | 0.55% |
| 37 | ↑ | 38 | Hive | Key-value | 3,311 | 7.7 | 0.52% |
| 38 | ↑↑↑ | 41 | SQLite | Relational | 3,241 | 9.8 | 0.50% |
| 39 | ↓↓ | 37 | RavenDB | Document | 3,123 | 9.9 | 0.49% |
| 40 | ↓ | 39 | Ehcache | Key-value | 1,834 | 7.1 | 0.29% |
| 41 | ↓ | 40 | Sphinx | Search Engine | 1,718 | 0.0 | 0.27% |
| 42 | ↑↑ 8 | 50 | age | - | 1,180 | 8.1 | 0.18% |
| 43 | ↑↑ | 45 | Firebird | Relational | 1,023 | 9.5 | 0.16% |
| 44 | ↓↓ | 42 | Infinispan | Key-value | 1,012 | 9.8 | 0.16% |
| 45 | ↓↓ | 43 | Apache Phoenix | Relational | 957 | 7.9 | 0.15% |
| 46 | ↓↓ | 44 | Apache Accumulo | Column | 952 | 9.8 | 0.15% |
| 47 | - | 47 | Apache Impala | Relational | 886 | 9.6 | 0.14% |
| 48 | - | 48 | Aerospike | Key-value NoSQL | 812 | 7.7 | 0.13% |
| 49 | ↓↓↓ | 46 | RRDtool | Time Series | 810 | 6.6 | 0.13% |
| 50 | ↓ | 49 | Riak KV | Key-value | 601 | 4.8 | 0.09% |
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.