Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
CKEditor - Real-time collaborative future-ready rich text editor
Smartmockups - Create stunning product mockups, easily and online.
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
Placeit - Generate realistic product shots in seconds
Froala Editor - Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.