gdb-engines.com is an Open Source comparison of graph database features and capabilities.
While most entries are databases, the landscape includes query engines, embedded libraries, and other graph technologies.
API
You can access this data through an API.
Research Features
The "Research Features" toggle in the menu reveals 43 feature scores from: Coimbra, M. E., Svitakova, L., Francisco, A. P., & Veiga, L. (2025). Survey: Graph Databases. arXiv:2505.24758. Scores range from 0 (not available) to 1 (fully implemented), evaluated using criteria defined in the paper.
Contribute
The data is stored in the GitHub repo as TOML files. Feel free to edit the data and submit a pull request.