Bukkit is supposed to be open soured but i cant even get to Jenkins to update my server. You are not free or open sourced.
Jenkins is currently down atm (as per this annoucement), and bukkit are and always have been free. You can grab the RB for 1.0.1 from here, and a dev (non recommended) build for 1.1 from here
Jenkins is down. Read this post please: http://forums.bukkit.org/threads/jenkins-temporarily-unavailable.55174/ Dang it saul beat me again.
https://github.com/Bukkit Looks pretty open source to me. Now please, go google 'open source' and figure out what it really means.