Buying software on steam

I have finally found Display Fusion. A program that helps me cope the catastrophe known as Nvidia control panel. Tried it out for for about a week and I think I am ready to make the purchase. I saw that it was available on steam, and I like the idea of centering software as well as games around one password. Now I'm just looking for any red flags from steam users who have bought software via steam and felt that they would have been better of getting it from the website instead. 

Well, there's always the issue of DRM and off-line availability, but Steam rates pretty low on the DRM scale of awful.  And buying software through Steam is really no different than buying games through steam afaik.  If you're cool with games, then you should be fine with software.  But your call.  If you're uncomfortable, get it elsewhere.

you download and run the installer through steam, from there it's a regular version of df, from what i remember they have next to no drm

if you've decided you like df as a solution i won't try to dissuade you

Valve doesn't require the use of CEG (steam's "DRM") so usually that stuff won't even DRM its just distributed through the distribution platform and if DRM is present its because the maker of the software doesn't want it to be DRM-free, honestly blaming steam as the root of all DRM is getting really old

What post did you read?  I didn't blame Steam as the root of all DRM.  I said it rates pretty low on the DRM scale of awful, meaning as far as DRM goes, it's pretty good.  I've got something on the order of 200 games on Steam and I've got no complaints.  But considering most Steam games require Steam to be running in order to launch (whether that was the choice of the developers or not), and all games/software need to be installed through Steam, it qualifies as DRM...  And some people are inclined to avoid DRM in all it's forms, so it's worth mentioning.

As far as display fusion is concerned, as mentioned below, there's no "always on" style DRM.  However, you do have to install it through Steam rather than being able to download an executable that can be used any time, so that's still a form of DRM (as it's tied to your account and requires Steam and an active internet connection to install), however minimal.  For most, that's not a big deal, but it may turn some people off.