Just what I was looking for!
I was looking for a standalone FB messaging app that I could use at work -- I dont like having the Facebook website open, but as people are increasingly using FB Messenger to send messages, I do sometimes want to respond while working. Ive just been using it a couple days, but so far so good! It hasnt crashed once for me, signing in wasnt an issue, message search worked really well, and the interface seems zippy to me (and Im usually the first to notice any lag). If it keeps working well, I will definitely buy the paid version to support the devs (and get rid of the ads).
Adam Boltz about
Astro for Facebook Messenger Free