Memgraph

Memgraph is an in-memory graph database. It stores connected data in memory so that relationships can be traversed quickly, and its code and releases are published on GitHub.

The licensing is mixed and needs attention. The repository states that its code is variously licensed under the Business Source License 1.1 (BSL) and the Memgraph Enterprise License (MEL), with BSL as the default for each file unless noted otherwise, and the copyright held by The Memgraph Authors. The BSL is source-available rather than open source. Memgraph Enterprise, covered by the MEL, is the commercial edition, so features reserved for it will need a paid arrangement. Buyers should read both licences before using the software in a product or a service.

Costs for the Enterprise edition should be confirmed directly with the vendor.

1, dated 11 September 2026. The project is active, and the release tags are listed on GitHub for anyone who wants to review how often new versions appear.