CRM - Customer/Client Relation Management (system)
com_flyspray on joomla? I've tested it and I can't recall any problem with the component.
Progress Module? module is a module, this is not something that would have a login for users/client but this can be a quick way to give your client a simple percentage graph of a certain project you're handling. I'm using this one to show my site's user the development/progress of the site. It's pretty simple - you can see a live use of this module at
http://www.caizine.comThere's also CiviCRM 1.2 which is being integrated/suited for compatibility with Joomla. The team is working on the front-end/user interface of the component. CiviCRM is suited for Non-profit Organization. You can check the project announcement at
http://www.openngo.org/Or you can try to work out the SugarCRM bridge/modules to work with Joomla. (I have not tested the system)