BitDew is an open source middleware implementing a set of distributed services for large scale data management on Desktop Grids and Clouds. BitDew relies on 5 abstractions to manage the data : i) replication indicates how many occurrences of a data should be available at the same time on the network, ii) fault-tolerance controls the policy in presence of machine crash, iii) lifetime is an attribute absolute or relative to the existence of other data, which decides the life cycle of a data in the system, iv) affinity drives movement of data according to dependency rules, v) protocol gives the runtime environment hints about the protocol to distribute the data (http, ftp or bittorrent). Programmers define for every data these simple criteria, and let the BitDew runtime environment manage operations of data creation, deletion, movement, replication, and fault-tolerance operation.
The current status of the software is the following : BitDew is open source under the GPLv3 or Cecill licence at the user's choice, 10 releases where produced in the last 2 years and it has been downloaded approximativelly 2500 times on the INRIA forge. Known users are Université Paris-XI, Université Paris-XIII, University of Florida, Cardiff University and University of Sfax.