Misc stuff packaged for Fedora
 

Official 

Mitter - a Twitter.com client

Under review  (Bugzilla link)

Google Protocol buffers for Fedora 

Now available in updates (Bugzilla link)

Unofficial

Cream RPMS for Fedora Core

SIM RPMS for Fedora Core

Either sim-mimelnk or kdenetwork package must be installed. 

03/05/2007: Fedora Core 5, SIM 0.9.4.3: