Box2D is an extremely popular physics engine that has been ported to many languages. DartBox2D is the Dart port.
Bootjack is a port of Twitter Bootstrap to the Dart world, built upon DQuery. Thanks to the nature of Bootstrap, Bootjack offers rich CSS assets and stylish components in a very non-invasive way.
Rikulo CouchClient is a client SDK that enables aaccess to the NoSQL document database Couchbase in the Dart language.
Rikulo MemcachedClient is a client SDK that provides access to the distributed memory object caching system Memcached from the Dart language.
A deduplication-based filesystem for Windows and Linux (SDFS).
Software to create a Web page with extensive statistics on your IRC channel.