| OpenTSDB | http://opentsdb.net/ | https://github.com/OpenTSDB/opentsdb | Classical time series database on top of HBase. Now support Cassandra and Bigtable. | Java |
| KairosDB | https://kairosdb.github.io/ | https://github.com/kairosdb/kairosdb | Fast Time Series Database on Cassandra | Java |
| Heroic | https://spotify.github.io/heroic/ | https://github.com/spotify/heroic | Scalable time series database based on Bigtable, Cassandra, and Elasticsearch | Java |
| BTrDB | http://btrdb.io/ | https://github.com/SoftwareDefinedBuildings/btrdb | High performance time series database designed to support high density data storage applications. | Go |
| Vaultaire | https://github.com/afcowie/vaultaire | https://github.com/afcowie/vaultaire | data vault for system metrics, backed onto Ceph | Haskell |
| InfluxDB | https://www.influxdata.com/time-series-platform/influxdb/ | https://github.com/influxdata/influxdb | Scalable datastore for metrics, events, and real-time analytics https://influxdata.com | Go |
| Prometheus | https://prometheus.io/ | https://github.com/prometheus/prometheus | systems and service monitoring system and time series database featuring pull model, alert, graph etc. | Go |
| Beringei | https://github.com/facebookincubator/beringei | https://github.com/facebookincubator/beringei | A high performance, in memory time series storage engine designed by Facebook | C++ |
| Atlas | https://github.com/Netflix/atlas | https://github.com/Netflix/atlas | In-memory dimensional time series database designed at Netflix | Scala |
| Khronus | https://github.com/Searchlight/khronus | https://github.com/Searchlight/khronus | distributed and reactive time series database designed to store, retrieve, analyze and process a large amount of Disk metrics | Scala |
| HawkularMetrics | http://www.hawkular.org/ | https://github.com/HawkularMetrics/HawkularMetrics | storage engine for metric data using Cassandra | Java |
| Blueflood | http://blueflood.io/ | https://github.com/rackerlabs/blueflood | distributed system designed to ingest and process time series data built by rackspace | Java |
| Newts | http://opennms.github.io/newts/ | https://github.com/OpenNMS/newts/ | a time-series data store support searching metadata | Java |
| Akumuli | http://akumuli.org/ | https://github.com/akumuli/Akumuli | a numeric time series database that can be used to capture, store and process time-series data in real-time. | C++ |
