open-pdf-sign - Sign PDF files digitally from CLI or your webserver

Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.

TinyWow - TinyWow provides free online conversion, pdf, and other handy tools to help you solve problems of all types.

PicMonkey - PicMonkey is a feature-rich online photo editor that works right in your browser; no downloads...

Wondershare PDFelement - All-in-one PDF editor

Piktochart - Piktochart for Business Storytelling