Working Nomads is a job board with only 100% remote jobs. It has a mix of tech and non-tech jobs. You can filter by location, keywords, contract type, and category.

Remotive is a pay-to-play remote job board. It boasts over 30,000 jobs at the time of writing. Membership costs €79.00 for lifetime access. Some jobs are publicly available so you can get some use of it even without paying for the membership.