Time & attendance software

Just wondering if anyone out there running suse linux on there server have any time an attendance software that they are runnig on there server that you would reccomend. I would need for it to have windows workstation based support an time clocks to punch in on. I need a solution to replace a system that working out now days. The software does not need to actually run on the linux server but just reside on a samba share for the data shares or it can have a database that runs on the linux side if need be. Thanks.