iPhoto
Used by 14 peopleen.wikipedia.org ↗

“I love Instagram, Flickr and iPhoto.”
Hiné Mizushima Interview, Felt sculptor, animator · via Uses This 
“I also dump in images that don't belong in iPhoto, passwords that I don't want (or need) in my keychain, and a bunch of other random stuff.”
Rich Siegel Interview, Developer and co-founder, Bare Bones Software · via Uses This 
“Trying other photo software just didn't seem worth it, and my computer came with iPhoto preinstalled which is a horrible piece of shit.”
Bryan Lee O'Malley Interview, Cartoonist (Scott Pilgrim) · via Uses This 
“I use iPhoto for general use of my own photos, but I also use Photoshop for more precise work like cropping and compression of other people's images.”
Violet Blue Interview, Writer, speaker, sex educator · via Uses This