The emoji-friendly messaging company Line started trading on the New York Stock Exchange Thursday morning, opening at $42 a share— nearly 30 percent more than its initial offering of $32.84.  It closed at $41.58, giving it a market value of around $8 billion. 

Line is one of several massively popular messaging apps that many Americans have likely never heard of. They command large, dedicated audiences in Asia, and on their face they seem identical. Free international calling and texting, along with some commerce. But apps like WeChat and Line go so much further, letting users get rides, buy movie tickets, make doctors appointments and pay bills.  Some of the most innovative American tech companies — Snapchat, Facebook, Apple and Google — are trying to replicate these messaging apps’ success with their own.

The whole business can be pretty confusing, so we’ve compiled a list of the major ones to see how they stack up.