There's several solutions out there; I'd suggest searching this subreddit for threads discussing them.
Flexera (formerly Secunia), Ivanti/Shavlik, and Patch My PC are all players in this spacle. However, be aware that SCUP integration (highest voted uservoice item) was recently marked as started. If the team really does this it's going to shake up this niche industry something fierce.
Also take a look at RuckZuck (http://ruckzuck.tools/) ... it's been on my list for a while now to look at.