Request for Startup: Kill HackerRank, CodeSignal, Coderbyte

Web-based IDEs used in HackerRank, CodeSignal, Coderbyte etc interrupt flow [1]. Local IDEs chosen by the candidate don't.

I want to see coding assessment software that runs with the candidate's local text-editor instead of a web-based IDE.

[1] - https://news.ycombinator.com/item?id=42492508