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, 389 Directory Server, Apache CFX, Apache ActiveMQ Public
2
Linux, Rancher, NeuVector, K3s, Harvester Private / Private Equity
2
Linux Private / SMB
5
OpenShift, Kubernetes, Apache Cassandra, Redis, MariaDB, PostgreSQL, Citus, Jupyter Notebook, MySQL Public
5
OpenShift, Grafana, MongoDB, Apache Airflow, Apache Spark, Kubernetes, Prometheus, Apache Flink, Apache Kafka, Presto, OpenSearch, Apache Cassandra, Redis, PostgreSQL, AWS OpenTelemetry (OTEL), Apache TinkerPop, Jupyter Notebook, FreeRTOS, MySQL Public
5
IBM
OpenShift, Kubernetes, containerd, Calico, cri-o, Jupyter Notebook, runc Private / SMB
8
Rust, PostgreSQL, Tembo, Trunk (Postgres), pgmq Venture / Seed
9
PyTorch, Tensorflow, ClickHouse, YDB, Elasticsearch, Kubernetes, Gitlab, Apache Kafka, Greenplum Database, Apache Hadoop, Apache Hive, Apache HBase, PostgreSQL, Jupyter Notebook, MySQL, Apache Zepplin Public
10
Godot Venture / Seed
11
ClickHouse Venture / Series B
11
ClickHouse, Grafana, Apache Flink, Apache Kafka, OpenSearch, Apache Cassandra, Redis, PostgreSQL, InfluxDB, MySQL, M3 Venture / Series D+
11
ClickHouse Venture / Seed
11
ClickHouse 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, Apache Superset, Istio, Metabase, Grafana Loki, Ghost, MLFlow, Cal.com, Argo CD, Kyverno, Filecoin, etcd, Crossplane, Argo Workflows, NocoDB, MinIO, Chatwoot, Rook, Hasura GraphQL Engine, Redis, OpenCost (Formerly KubeCost), RabbitMQ, PostgreSQL, Knative Serving, Bootstrap, InfluxDB, vaultwarden, Jitsu, Oauth2 Proxy, MySQL, dex, kratos, Kubeflow, ORY Hydra, 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+