645 Open Core Companies

Rank Name Commercializing Stage
1
LLVM, PyTorch, Tensorflow, ONNX, Core ML Tools Venture / Series A
2
Linux, OpenShift, Kubernetes, Apache Camel, Podman, Ansible, Apache CFX, 389 Directory Server, Apache ActiveMQ Public
2
Linux, Rancher, NeuVector, K3s, Harvester Private / Private Equity
2
Linux Private / SMB
5
Rust, PostgreSQL, Tembo, Trunk (Postgres), pgmq Venture / Series A
6
OpenShift, Kubernetes, Apache Cassandra, Redis, PostgreSQL, Citus, MariaDB, Jupyter Notebook, MySQL Public
6
OpenShift, Grafana, MongoDB, Apache Airflow, Kubernetes, Apache Spark, Prometheus, Apache Flink, Apache Kafka, Presto, OpenSearch, Apache Cassandra, Redis, PostgreSQL, AWS OpenTelemetry (OTEL), Apache TinkerPop, Jupyter Notebook, FreeRTOS, MySQL Public
6
IBM
OpenShift, Kubernetes, Calico, containerd, cri-o, Jupyter Notebook, runc Private / SMB
9
PyTorch, Tensorflow, ClickHouse, YDB, Kubernetes, Elasticsearch, Gitlab, Apache Kafka, Greenplum Database, Apache Hadoop, Apache Hive, Apache HBase, PostgreSQL, Jupyter Notebook, Apache Zepplin, MySQL Public
10
ClickHouse Venture / Series B
10
ClickHouse, Grafana, Apache Flink, Apache Kafka, OpenSearch, Apache Cassandra, Redis, PostgreSQL, InfluxDB, MySQL, M3 Venture / Series D+
10
ClickHouse Venture / Seed
10
ClickHouse Venture / Seed
14
Godot Venture / Seed
15
Grafana, Prometheus, Grafana Mimir, Grafana Loki, Grafana Tempo, Cortex for Prometheus, Grafana Faro Web SDK, Grafana Phlare Venture / Series D+
15
Grafana, Apache Airflow, Elasticsearch, Sentry, Apache Spark, Airbyte, Gitlab, Renovate, Vault, Dagster, Apache Kafka, Istio, Metabase, Apache Superset, Filecoin, Argo CD, Ghost, Grafana Loki, MLFlow, Cal.com, Kyverno, etcd, NocoDB, MinIO, Rook, Hasura GraphQL Engine, Chatwoot, Argo Workflows, RabbitMQ, Redis, OpenCost (Formerly KubeCost), Crossplane, PostgreSQL, Knative Serving, Bootstrap, InfluxDB, vaultwarden, kratos, dex, Oauth2 Proxy, Jitsu, Kubeflow, ORY Hydra, MySQL, Plural, Goldilocks
17
OpenTelemetry (OTEL) Venture / Series C
17
OpenTelemetry (OTEL) Venture / Seed
17
OpenTelemetry (OTEL), Prometheus, PostgreSQL, TimescaleDB Venture / Series C
17
OpenTelemetry (OTEL) Venture / Series D+