Is there a site that has most if not all Line Webtoons?

Unfortunately no, at least none that I've seen. Sometimes other scans do their own translations of a title, which helps if you're like me and hate the Daily Pass system

But for Webtoon Originals that start off daily passed, there isn't anything. Webtoon is also introducing pay-per-views via their coins system in app, required ads before reading, etc. Overall the app itself is going downhill quick