FOSS license changes

Open-source projects that changed their license, newest first.
15 changes across 12 projects, 5 of which spawned a fork.

restrictedtightened to source-availablere-openedadded an open license back

May 1, 2025
Redis
SSPL-1.0→AGPL-3.0 d65102861f51
Re-added AGPLv3 as a license option in Redis 8.
Oct 1, 2024
CockroachDB
BSL-1.1→CockroachDB Software License c0274df57a9f
Replaced BSL with the proprietary CockroachDB Software License, ending the Apache conversion.
Sep 13, 2024
Elasticsearch
SSPL-1.0 Elastic-2.0→AGPL-3.0 SSPL-1.0 Elastic-2.0 a59c182f9f7e
Added AGPL-3.0.
Mar 20, 2024
Redis
BSD-3-Clause→SSPL-1.0 0b34396924ec
forked to Valkey
Moved from BSD-3 to dual RSALv2 + SSPLv1. Linux Foundation forked to Valkey.
Nov 17, 2023
Sentry
BUSL-1.1→FSL-1.0 Apache-2.0 d4d89e2fa93a
Moved from Business Source License to Functional Source License.
Aug 11, 2023
Vault
MPL-2.0→BUSL-1.1 0b12cdcfd172
forked to OpenBao
Relicensed MPL to Business Source License alongside the rest of HashiCorp's stack. Forket to OpenBao.
Aug 10, 2023
Terraform
MPL-2.0→BUSL-1.1 b145fbcaadf0
forked to OpenTofu
Relicensed from Mozilla Public License to Business Source License. Forked to OpenTofu within days.
Sep 7, 2022
Akka
Apache-2.0→BSL-1.1 adf1cd044b78
forked to Apache Pekko
Left Apache-2.0 for the Business Source License. Community forked to Apache Pekko.
Sep 27, 2021
Airbyte
MIT→Elastic-2.0 f25542a145f2
Moved connectors and platform from MIT to the Elastic License.
Apr 23, 2021
MinIO
Apache-2.0→AGPL-3.0 069432566fcf
Switched from Apache-2.0 to AGPLv3.
Apr 20, 2021
Grafana
Apache-2.0→AGPL-3.0 8db3eb90ae8c
Relicensed from Apache-2.0 to AGPLv3 across its core projects.
Feb 3, 2021
Elasticsearch
Apache-2.0 Elastic-1.0→SSPL-1.0 Elastic-2.0 a92a647b9f17
forked to OpenSearch
Dropped Apache-2.0 for SSPL/Elastic License. AWS forked to OpenSearch.
Jun 4, 2019
CockroachDB
Apache-2.0→BSL-1.1 2c4e2c6ac088
Apache core relicensed to Business Source License with a rolling conversion to Apache.
Dec 14, 2018
Confluent (ksqlDB)
Apache-2.0→Confluent Community License 247735b224b2
Relicensed from Apache-2.0 to the source-available Confluent Community License.
Oct 16, 2018
MongoDB
AGPL-3.0→SSPL-1.0 5851c894963c