Ask HN: What are some “10x” software product innovations you have experienced?

Peter Thiel has written about the "10x rule" for startups, where your innovation has to be 10 times better than the second best option [1].

Have you personally experienced such 10x improvements in your own interactions with software? What were they?

[1] - https://thenextweb.com/entrepreneur/2015/07/13/the-10x-rule-for-great-startup-ideas/