37pix reference
I recently came across a new platform while browsing, and I was surprised by how smooth and fast the overall experience feels compared to others I've tried before, especially in terms of loading speed and usability
http://prose.astral.camp/xx8m4putv/xx8-reference
http://writing.amethyst.name/y53awimckt/53a-reference
https://blog.librescrum.org/w8dpgws7jrx/8dpg-reference