643 Open Core Companies

Rank Name Commercializing Stage
1
LLVM, PyTorch, Tensorflow, ONNX, Core ML Tools Venture / Series A
2
Linux, OpenShift, Apache Camel, Podman, Kubernetes, Ansible, Apache CFX, Apache ActiveMQ, 389 Directory Server Public
2
Linux, Rancher, NeuVector, K3s, Harvester Private / Private Equity
2
Linux Private / SMB
5
OpenShift, Kubernetes, Apache Cassandra, Redis, PostgreSQL, MariaDB, Jupyter Notebook, Citus, MySQL Public
5
OpenShift, Grafana, MongoDB, Apache Airflow, Apache Spark, Prometheus, Apache Flink, Apache Kafka, Kubernetes, OpenSearch, Presto, Apache Cassandra, Redis, PostgreSQL, Apache TinkerPop, AWS OpenTelemetry (OTEL), Jupyter Notebook, MySQL, FreeRTOS Public
5
IBM
OpenShift, Kubernetes, Calico, containerd, cri-o, Jupyter Notebook, runc Private / SMB
8
Rust, PostgreSQL, Tembo Stacks, Trunk (Postgres), pgmq Venture / Seed
9
PyTorch, ClickHouse, Tensorflow, YDB, Elasticsearch, Gitlab, Apache Kafka, Kubernetes, Greenplum Database, Apache Hadoop, Apache Hive, Apache HBase, PostgreSQL, Jupyter Notebook, MySQL, Apache Zepplin Public
10
Odoo Private / Private Equity
11
ClickHouse Venture / Series B
11
ClickHouse, Grafana, Apache Flink, Apache Kafka, OpenSearch, Apache Cassandra, Redis, PostgreSQL, MySQL, InfluxDB, M3 Venture / Series D+
11
ClickHouse Venture / Seed
11
ClickHouse Venture / Seed
15
Godot Venture / Seed
16
Grafana, Prometheus, Grafana Mimir, Grafana Loki, Grafana Tempo, Cortex for Prometheus, Grafana Faro Web SDK, Grafana Phlare Venture / Series D+
16
Grafana, Elasticsearch, Apache Airflow, Apache Spark, Sentry, Airbyte, Gitlab, Ghost, Renovate, Vault, Apache Kafka, Dagster, Filecoin, Istio, Apache Superset, Grafana Loki, Metabase, MLFlow, Cal.com, Argo CD, Kyverno, etcd, NocoDB, Rook, Argo Workflows, MinIO, Redis, Chatwoot, OpenCost (Formerly KubeCost), Hasura GraphQL Engine, RabbitMQ, PostgreSQL, Crossplane, Knative Serving, Bootstrap, kratos, Oauth2 Proxy, MySQL, InfluxDB, Kubeflow, Jitsu, vaultwarden, ORY Hydra, Plural, dex, Goldilocks
18
OpenTelemetry (OTEL) Venture / Series C
18
OpenTelemetry (OTEL) Venture / Seed
18
OpenTelemetry (OTEL), Prometheus, PostgreSQL, TimescaleDB Venture / Series C