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Licenses

13 license changes across 9 projects since 2018, newest first, each with the commit that changed the LICENSE file.

Licenses over timeProjects that changed their license, each followed by the forks it prompted.
MongoDB
CockroachDB
Elasticsearch
OpenSearch
MinIO
Grafana
Airbyte
Terraform
OpenTofu
Vault
OpenBao
Redis
Valkey
2009'092011'112013'132015'152017'172019'192021'212023'232025'25

Every license change

13 of 13 changes

ProjectChange
AirbyteJul 23, 2025Elastic License 2.0 (platform) and MIT (connectors) to Elastic License 2.0Remaining licenses in the repository migrated to the Elastic License 2.0.LICENSE commit
RedisMay 1, 2025Redis Source Available License v2 or SSPL v1 to Redis Source Available License v2 or SSPL v1 or AGPL v3From Redis 8, AGPL v3 added as a third option.LICENSE commitAnnouncement
CockroachDBSep 26, 2024Business Source License 1.1 and CockroachDB Community License to CockroachDB Software LicenseOne CockroachDB Software License for all self-hosted use, replacing the free core.LICENSE commitAnnouncement
ElasticsearchSep 13, 2024SSPL v1 or Elastic License 2.0 to AGPL v3 or SSPL v1 or Elastic License 2.0AGPL v3 added as a third option, making Elasticsearch open source again.LICENSE commitAnnouncement
RedisMar 20, 2024BSD 3-Clause to Redis Source Available License v2 or SSPL v1From Redis 7.4, a choice of the Redis Source Available License or SSPL; 7.2 and earlier stay BSD.LICENSE commitAnnouncement
VaultAug 11, 2023MPL 2.0 to Business Source License 1.1HashiCorp moved its products to the Business Source License; Vault 1.15 and later.LICENSE commit
TerraformAug 10, 2023MPL 2.0 to Business Source License 1.1HashiCorp moved its products to the Business Source License; Terraform 1.6 and later.LICENSE commit
AirbyteSep 27, 2021MIT to Elastic License 2.0 (platform) and MIT (connectors)The platform moved to the Elastic License 2.0; connectors stayed MIT.LICENSE commit
GrafanaApr 20, 2021Apache 2.0 to AGPL v3Grafana Labs moved Grafana, Loki and Tempo from Apache 2.0 to AGPL v3, from Grafana 8.LICENSE commitAnnouncement
MinIOApr 18, 2021Apache 2.0 to AGPL v3MinIO moved from Apache 2.0 to AGPL v3.LICENSE commit
ElasticsearchFeb 2, 2021Apache 2.0 to SSPL v1 or Elastic License 2.0Elastic moved Elasticsearch and Kibana off Apache 2.0 to a choice of SSPL or the Elastic License, from 7.11.LICENSE commitAnnouncement
CockroachDBJun 3, 2019Apache 2.0 and CockroachDB Community License to Business Source License 1.1 and CockroachDB Community LicenseCore code moved from Apache 2.0 to the Business Source License.LICENSE commit
MongoDBOct 15, 2018AGPL v3 to SSPL v1MongoDB introduced the Server Side Public License for the community server.LICENSE commitAnnouncement

Licenses in use today

LicenseCount
Apache 2.0Open sourceTensorFlow, Transformers, vLLM, Apache Superset, ClickHouse, Apache Airflow, Milvus, Apache Spark, Ray, SGLang, JAX, Qdrant, Apache Kafka, MLflow, Apache Flink, Prefect, Apache Arrow, Dagster, dbt, OpenSearch, Trino, Apache DataFusion, Apache Iceberg, Delta Lake, Apache Hudi25
MITOpen sourceOllama, LangChain, llama.cpp, LlamaIndex, DuckDB, Polars6
AGPL v3Open sourceGrafana, MinIO2
Business Source License 1.1Source-availableTerraform, Vault2
MPL 2.0Open sourceOpenTofu, OpenBao2
BSD-style (PyTorch license)Open sourcePyTorch1
AGPL v3 or SSPL v1 or Elastic License 2.0Open sourceElasticsearch1
Redis Source Available License v2 or SSPL v1 or AGPL v3Open sourceRedis1
CockroachDB Software LicenseSource-availableCockroachDB1
SSPL v1Source-availableMongoDB1
BSD 3-ClauseOpen sourceValkey1
Elastic License 2.0Source-availableAirbyte1

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