Simple Hosted Bug and Issue Tracking
#issuetracking
Gamatam Tasks
Gamatam Tasks tracks tasks between Worpress users, allowing users to edit the description, change the task status, change the priority and assign the task to a different user. It is not as comprehensive as most issue trackers (no work flow etc) by design, I found a lot of clients looking for something more useful than a spreadsheet or todo list, but not as complicated to use as bugzilla, trac et al.
Lighthouse
Simple hosted Issue tracking, bug tracking, and project management software. SVN integration, email management etc. Written in Ruby on Rails and looks pretty cool.