Love my 3-4" fixed blades...
If you want to go with 4" - Bark River Fox River-LT is great...it's listed as 4.25", but BRKT will bring it down to 4" for you. Just put your request in the comment section of whatever dealer you use. (Mine - bought directly from a dealer, came in at just a hair over 4", with no such request made)
If you want 3" or just under: Dozier Modified Personal, BRKT Mini Fox River...LT Wright Patriot is a little smaller still, but a nice little knife.
I'd be remiss if I didn't mention the Bradford Guardian3; and I have a fondness for the SwampRat Rodent3 and Rodent Solution (both of which are discontinued, but can be found with a little patience). *Almost forgot the CPK EDC - currently out of production, so a little hard to come by, but definitely worth the effort (and the $$)!
As mentioned by others, we've got some great makers here. I had a puukko made to my specs by Malanika, and it is simply outstanding. I've also got a couple from bacustomknives, but I think he's hanging out more in IG these days.
Edited to add pictures, and mention the Spyderco Mules - choose your steel, slap on a set of Halpern scales, and you're golden (haha)