What software do you wish existed?
And I am asking relative to general people, so don't say about some software product that helps you in building software, etc.
In simple words, What is the next Facebook?
It could be a website/app/extension/anything!
Android texting app that allowed more than 4 lines of less than 20 characters each.
Android keyboard that wasn't a fucking nightmare to use to type more than 2 words.
document-centric operating environments which completely hide the notion of a POSIX-based operating system underneath
FLOSS software for cellular modems.