by Atish Dipongkor
Exploring the REST API of SharePoint. This tool will help to test HTTP request very easily.
by Nderon Hiseni
Creating a history version for list items
by Bassam Abdul-Baki
Extracting hyperlinks from SharePoint email notifications and displaying them in an HTML tree
by Bajirao_
It's a SharePoint 2013 POC of modal popup in which HTML can be used as content of popup.