A common question is what Kafka projects would be fun and aren't being worked on by anyone else right now.
Most of the committers are working hard on getting 0.8 stable. So the most useful thing anyone could do is download the 0.8 branch and bang on it until it breaks and then help us track it down the problem and fix it. (Instructions here: https://cwiki.apache.org/confluence/display/KAFKA/Kafka+0.8+Quick+Start) However sometimes you just need a fun programming project. We have long had a 'newbie' label to help find easy bugs: https://issues.apache.org/jira/issues/?jql=project%20%3D%20KAFKA%20AND%20labels%20%3D%20newbie This is intended for people just learning the code base to get their hands dirty. However if you already kind of know the code that list may not be too satisfying. To help spark your imagination on deeper projects, I added a new label 'project' and found reasonable stand alone projects that might be fun for people. You can find those here: https://issues.apache.org/jira/issues/?jql=project%20%3D%20KAFKA%20AND%20labels%20%3D%20project Cheers, -Jay