648 Open Core Companies

Rank Name Commercializing Stage
1
Linux, OpenShift, Kubernetes, Apache Camel, Podman, Ansible, Apache CFX, Apache ActiveMQ, 389 Directory Server Public
1
Linux, Rancher, NeuVector, K3s, Harvester Private / Private Equity
1
Linux Private / SMB
4
LLVM, PyTorch, Tensorflow, ONNX, Core ML Tools Venture / Series A
5
Rust, vLLM, PostgreSQL, Tembo, pgmq, Trunk (Postgres), pgvector, pg_tier, pg_vectorize, Tembo Self Hosted, pg_auto_dw Venture / Series A
6
OpenShift, Kubernetes, MariaDB, Apache Cassandra, PostgreSQL, Redis, Jupyter Notebook, Citus, MySQL Public
6
OpenShift, Grafana, MongoDB, Apache Airflow, Kubernetes, Apache Spark, Prometheus, Apache Kafka, Apache Flink, Presto, OpenSearch, Apache Cassandra, PostgreSQL, AWS OpenTelemetry (OTEL), Redis, Apache TinkerPop, Jupyter Notebook, FreeRTOS, MySQL Public
6
IBM
OpenShift, Kubernetes, containerd, Calico, cri-o, runc, Jupyter Notebook Private / SMB
9
PyTorch, ClickHouse, Tensorflow, YDB, Elasticsearch, Kubernetes, Gitlab, Apache Kafka, Greenplum Database, Apache Hadoop, Apache HBase, Apache Hive, PostgreSQL, Jupyter Notebook, Apache Zepplin, MySQL Public
10
ClickHouse Venture / Series B
10
ClickHouse, Grafana, Apache Kafka, Apache Flink, OpenSearch, Apache Cassandra, PostgreSQL, Redis, InfluxDB, MySQL, M3 Venture / Series D+
10
ClickHouse Venture / Seed
10
ClickHouse Venture / Seed
14
Godot Venture / Seed
15
OpenTelemetry (OTEL) Venture / Series C
15
OpenTelemetry (OTEL) Venture / Seed
15
OpenTelemetry (OTEL), Prometheus, PostgreSQL, TimescaleDB Venture / Series C
15
OpenTelemetry (OTEL) Venture / Series D+
15
OpenTelemetry (OTEL), BindPlane OP Venture / Seed
20
Grafana, Prometheus, Grafana Mimir, Grafana Loki, Grafana Tempo, Cortex for Prometheus, Grafana Faro Web SDK, Grafana Phlare Venture / Series D+