How to find out which provider someone used to log in
Fixing duplicate content pops in Sitefinity, no more urlname issues
Making Angular widgets in sitefinity
Sitefinity Social Logout explained
Speed up sitefinity compilation with Rolyn
Allow sitefinity forms to popup in a modal window
Identifying problems in the Sitefinity page editor
Don't forget to disable Sitefinity Warmup Plugins to get the most of the 10.1 dev speed improvements.
Sitefinity 10 introduced a new login system based on Identity Server 3 and now logging into the backend might throw certificate errors. Here's how you can generate a local temporary one.
Add a bootstrap dropdown navigation template to Sitefinity