Adult Life:
Lily Love - By the same person that writes and draws Pulse. If you liked Pulse, you'll probably like this one. Not exactly adult life, but they're in college, so also not the typical high school story either.
Ebisu-san and Hotei-san - This one isn't overtly yuri. You never see the two main characters kiss, for example. But there's definitely a burgeoning romance there, and if you're not convinced by the end of the main story, the omake makes it pretty clear.
Cute stories:
Kase-san - I just read this for the first time a few days ago, and my goodness. SO MUCH FLOOFY CUTENESS. Yamada and Kase-san have defintely become my favorite yuri couple.
Out of the Blue! - Brainy honor student falls in love with the local delinquent. Hilarity ensues. Also has a sweet ending.
Hana and Hina After School - Very cute story about a burgeoning romance.
Age Gap:
Two and Two - Polyamorous age gap, even!
NSFW:
From Now On, Together With Senpai - One of two doujins here with the coveted Insane Amounts of Sex
tag. Still one of my all-time favorites. Kaya-chan is my spirit animal.
Purely Codependence - IMHO this one-shot deserves the Insane Amounts of Sex
tag. Very sweet, romantic comic about a couple of very horny girls.
Thank you! I've been reading Lily love but didn't know about the others. I will take a look at them :)