YouTrack ticks every one of your requirements, I think
I was in a similar sized company using it last year, everyone seemed happy with it. Extra kudos for having a command line interface in the web app. jetbrains.com/youtrack/
Posts by Chris F Carroll
2 publicly visible posts • joined 12 Aug 2008
Helpdesk/Service Desk Recommendations
Is Microsoft's Silverlight evil?
Wednesday 13th August 2008 10:19 GMT 
Embrace and extend / Oh no not again
The MS tactic with stuff that took away their monopoly was, 'embrace and extend' -- which means they start by looking as if they are aiming for compatibility but they 'extend' the technology in such a way that it only works properly on Windows.
Silverlight is that same tactic all over again.
It will work somewhat on non-windows platforms. It will only work properly on Windows (with Windows Presentation Foundation). So it's billed as cross platform -- but it's really for Windows.
Flash is not like that. So yes, there's a difference. Silverlight is yet another move to replace a cross platform solution with a "you need Windows" solution.
Biting the hand that feeds IT
