Alcamy - Free, open self-learning platform. Learn & teach anything.
Gifmock - Easily create high quality GIFs
Airschool - Airschool is a live-streaming educational platform with engagement and monetization tools to help anyone start teaching online. It can be finance, business, wellness, meditation, branding, marketing; in short, anything you want!
GIF Resizer - Create animated GIFs and resize GIFs too big to tweet!
Stacks - A bookshelf for your online courses
ResizePixel - Free image editor to crop, resize, flip, rotate and convert images online