Gliffy diagram editor

Gliffy diagram editor

Gliffy is a free and easy to use diagram editor with export to png graphics and more. It can be run as a Chrome app. https://www.gliffy.com/ https://youtu.be/UGUT2jsrGCg
yED graphic editor

yED graphic editor

yED is a good and free diagram editor with advanced features like auto-reordering. There is even an online version. https://www.yworks.com/products/yed# https://youtu.be/OmSTwKw7dX4
Notepad++ source editor

Notepad++ source editor

Notepad++ logo A great and free sourcecode editor. Can be expanded with several plugins. With the ftp plugin very suited for hardcoding websites! https://notepad-plus-plus.org/