Stack Overflow - Community-based Q&A part of the Stack Exchange platform.
7 cups - Want to talk to someone now?
The Answer Bank - The Answer Bank is the UK’s leading question-and-answer site.
Talkspace - Connect with a licensed therapist from the palm of your hand, and experience the most convenient, affordable way to improve your mental health. Start today.
Askalot - Askalot is a next generation CQA (Community Question and Answer) system.
MellowTalk - MellowTalk is a chat platform built on the kindness of strangers.