There isn't any other than the occasional message when you save that tells you to buy the product. It's about as close to freeware as a paid product can get.
replyI do suggest people pay though, it's cheap for a one-time purchase. The only reason I've ever seen the message at all is because I spent months being too lazy to dig up the license key to send to my work email. (That should also say something about how little I was being bothered by the message too)
on paid 3, i get a popup every time i try to do anything telling me i must upgrade and pay again, so i've steadily just stopped using sublime. Didn't install it on the new computer
replyI don't like that it upgrades to ST4 without telling you, but there's a simple workaround if you want to continue using your ST3 license. Download the latest stable build of ST3 from their website:
replyAnd then add
“update_check”: false