Datanet: a CRDT Database
Conflict-free replicated data types are special data types that can be eventually reconciliated, even when they have been modified in different ways in some of their replicas.
The biggest disadvantage is the number of data types that can be considered CRDTs. There are grow-only counters and sets and some other types, and many others built by composing the basic types (for example, you can build a regular set by adding elements with a DELETED X for removing previous elements), but there are not all the data types programmers are used to.
Source: highscalability.com