From tapas: purpurea noxa, aimatos, mismatch, symbiosis, first aid, the boy and the wolf, narcotic, noisome, long exposure, talking talk, rock and riot, valentine, obnoxious ero-kun, heavy horns, the one who loved you from behind, dear boy, the god in the field and flowerpot.
avialae from smackjeeves is really good!
There's a BL on spottoon called Roommates. I've only read the first couple of chapters but it looks like it'll be kinda cute. It just started a free rotation so the first 6 chapters are free.
http://www.mangago.zone/home/album/19629/
The album has illustrations with the link to the original series
"Sunshine Boy: Leftovers" is one of my favorites. It was moved from Tapas to Sparkler Monthly.
Oh, and Sharp Zero, Narcotic, No Sun in Summer, Countdown to Countdown (?), Griefer Belt, Theurgy, the Wolf and the Hungry Boy, and Tied in Red.
Can you recommend me some yaoi webtoons that aren't available on mangago?
For example from tapas, webtoons or smackjeeves. I really like crushed, insomnia, i hate you and valentine. If you know of something similar please let me know too.