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
https://mooc.rtu.lv/members/nn567sszzp838099/profile/
https://pinshape.com/users/9036647-345w
https://tig2.dpdns.org/user/nn777cmp