604 Open Core Companies

Rank Name Commercializing Stage
1
LLVM, Tensorflow, PyTorch, 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, CoreDB Venture / Seed
6
OpenShift, Kubernetes, MariaDB, Apache Cassandra, Redis, PostgreSQL, Jupyter Notebook, Citus, MySQL Public
6
OpenShift, Grafana, MongoDB, Apache Airflow, Kubernetes, Apache Spark, Apache Flink, Apache Kafka, OpenSearch, Presto, Prometheus, Apache Cassandra, Redis, AWS OpenTelemetry (OTEL), PostgreSQL, Apache TinkerPop, Jupyter Notebook, MySQL, FreeRTOS Public
6
IBM
OpenShift, Kubernetes, Calico, containerd, Jupyter Notebook, cri-o, runc Private / SMB
9
Tensorflow, PyTorch, ClickHouse, YDB, Kubernetes, Elasticsearch, Gitlab, Apache Kafka, Greenplum Database, Apache Hive, Apache Hadoop, Apache HBase, PostgreSQL, Jupyter Notebook, MySQL, Apache Zepplin Public
10
Godot Venture / Seed
11
OpenTelemetry (OTEL) Venture / Series C
11
OpenTelemetry (OTEL) Venture / Seed
11
OpenTelemetry (OTEL), Prometheus, PostgreSQL, TimescaleDB Venture / Series C
11
OpenTelemetry (OTEL) Venture / Series D+
11
OpenTelemetry (OTEL), BindPlane OP Venture / Seed
16
ClickHouse Venture / Series B
16
ClickHouse, Grafana, Apache Flink, Apache Kafka, OpenSearch, Apache Cassandra, Redis, PostgreSQL, MySQL, InfluxDB, M3 Venture / Series D+
16
ClickHouse Venture / Seed
16
ClickHouse Venture / Seed
20
Odoo Private / Private Equity
21
Grafana, Grafana Mimir, Grafana Loki, Prometheus, Grafana Tempo, Cortex, Grafana Phlare, Grafana Faro Web SDK Venture / Series D+
21
Grafana, Apache Airflow, Apache Spark, Airbyte, Elasticsearch, Gitlab, Sentry, Filecoin, Vault, Grafana Loki, Renovate, Apache Superset, Dagster, Istio, Ghost, Argo CD, Hasura GraphQL Engine, Apache Kafka, Kyverno, Metabase, etcd, MLFlow, Cal.com, NocoDB, MinIO, RabbitMQ, Chatwoot, Redis, Argo Workflows, Rook, Crossplane, PostgreSQL, Bootstrap, OpenCost (Formerly KubeCost), Knative Serving, kratos, MySQL, vaultwarden, Kubeflow, Plural, InfluxDB, ORY Hydra, dex, Oauth2 Proxy, Jitsu, Goldilocks
23
Backstage, Kubernetes, Spring Boot, Greenplum Database, Spring Framework, Open vSwitch, Cloud Foundry BOSH Public
23
Backstage Venture / Series A
25
Kibana, Kubernetes, Elasticsearch Public
26
OpenStack, Kubernetes Public
26
OpenStack, Kubernetes Private / Private Equity
26
OpenStack, MongoDB, Kubernetes, Blender, Apache Kafka, OpenSearch, Apache Cassandra, Juju, PostgreSQL, MySQL, Kubeflow, Charmed Operators Private / SMB
29
WSO2 Venture / Series D+
29
WSO2 Private / SMB
31
Harness, Drone Venture / Series D+
32
MongoDB Public
32
MongoDB, Kubernetes, Elasticsearch, OceanBase, Apache Kafka, Greenplum Database, OpenSearch, MariaDB, RabbitMQ, Redis, Apache RocketMQ, Apache HBase, PostgreSQL, MySQL, InfluxDB, PolarDB for PostgreSQL Public
32
MongoDB, Kubernetes, Redis, PostgreSQL Public
32
MongoDB, Greenplum Database, Redis, PostgreSQL, MySQL Private / SMB
32
MongoDB, MariaDB, PostgreSQL, MySQL Private / SMB
37
Nextcloud Private / SMB
37
Nextcloud, Discourse, PrestaShop, Mattermost Server, Rocket.Chat, Chatwoot, WordPress, Jupyter Notebook, Drupal, vaultwarden Private / SMB
39
Supabase, Deno, PostgreSQL, Supabase Postgres, Supabase Realtime, postgres-meta, PostgREST, Supabase Wrappers, Supabase Storage Middleware
40
PHP, Laravel Core Framework, Craft CMS, Laravel Private / SMB
41
Apache Airflow, Astro, OpenLineage, Marquez, Astronomer, Astronomer Cosmos Venture / Series C
41
Apache Airflow, Kubernetes, Chromium, Apache Beam, Flutter, PostgreSQL, Jupyter Notebook Public
41
Apache Airflow, Apache Superset, Meltano Venture / Seed
41
Apache Airflow, Apache Spark, Apache Kafka, Apache Hive, Apache Hadoop Private / Private Equity
41
Apache Airflow Venture / Seed
41
Apache Airflow, Apache Spark, Delta Lake Venture / Series A
41
Apache Airflow, Apache Spark, Trino, Apache Superset, Apache Kafka, Open Policy Agent (OPA), Apache Nifi, Prometheus, Apache Hive, Apache Hadoop, Apache Druid, Apache HBase, Apache Zookeeper Venture / Seed
48
Arduino Venture / Series B
49
Solana Venture / Series D+
50
Kubernetes, GraalVM, MySQL Public
50
Kubernetes, Argo CD, Fission Venture / Series D+
50
Kubernetes, Rancher Venture / Series D+
50
Kubernetes Venture / Series B
50
Kubernetes, Open Policy Agent (OPA), Terraform Venture / Series B
50
Kubernetes, Envoy, Argo CD, Telepresence, Emissary Ingress Venture / Series B
50
Kubernetes Venture / Series C
50
Kubernetes Venture / Series B
50
Kubernetes Public
50
Kubernetes Venture / Seed
50
Kubernetes Private / Large
50
Kubernetes Venture / Series B
50
Kubernetes, Kubermatic, Kubeone Venture / Seed
50
Kubernetes, OpenEBS Venture / Series B
50
Kubernetes, vcluster, DevSpace Venture / Seed
50
Kubernetes, Terraform Venture / Seed
50
Kubernetes Venture / Seed
50
Kubernetes, OpenEBS Venture / Series A
68
Apache Spark, MLFlow Venture / Series D+
68
Apache Spark Venture / Series A
70
Weblate Private / SMB
71
Airbyte Venture / Series B
72
OsmAnd Private / SMB
73
Ray Venture / Series C
74
Chromium Venture / Series B
75
Nuclei, httpx, subfinder, naabu, Proxify, dnsx Venture / Series A
76
CockroachDB Venture / Series D+
77
Blender
77
Blender Private / SMB
79
Gitlab, Git Public
79
Gitlab Private / SMB
81
Apache Arrow, Ibis, Apache Parquet Venture / Series B
81
Apache Arrow, Nessie Venture / Series D+
83
Storybook Venture / Series A
84
Gecko Private / Non-Profit
85
Pandas, Modin Venture / Seed
86
Transformers Venture / Series C
87
Sentry Venture / Series D+
88
IntelliJ, Jupyter Notebook Private / SMB
89
Apache Doris Venture / Series B
90
Liferay Portal Private / SMB
91
Ceph Private / Non-Profit
91
Ceph, Rook Venture / Seed
93
WooCommerce, WordPress Venture / Series D+
93
WooCommerce, WordPress Private / Private Equity
93
WooCommerce, WordPress, OpenCart Private / Private Equity
96
Envoy, Istio, Gloo Venture / Series C
97
YugabyteDB Venture / Series C
98
ERPNext Venture / Seed
99
Kicad Private / SMB
100
Matrix Venture / Series B