DataLad most obvious feature at first is that it is a command line tool to version control your data. The same way you can version-control your code with a version-control system like Git, you can version control your data with Datalad: in brief "Datalad is to data, what Git is to code".
But actually is more than that. Datalad is a free and open source distributed data management system that:
- keeps track of your data,
- creates structure,
- ensures reproducibility,
- supports collaboration,
- and integrates with widely used data infrastructure.