ManageEngine Desktop Central
Overall, I have to bluntly say that I really enjoyed playing with ManageEngine's solution. It's got a crap-ton of features built into it - above and beyond patching - that I think IT/security folks will really appreciate.
Agent or agentless management of systems
MDM (didn't play with it but it certainly looks feature-rich)
Ability to push out configurations for things you'd normally use GPOs for - i.e. setting a login banner, enforcing screen locks, setting IE homepage and search engine, etc.
Patch management is full-featured - it's easy to setup a simple "scan systems, download and deploy missing patches." Or just a "scan to identify missing patches" kind of thing. It's easy to run a variety of reports to find out which systems are most vulnerable, which patches are missing across the enterprise, etc.
Software deployment engine - there's a big package library where you can easily search and deploy things