Wakelet is a curation tool where you can ssave and share all kinds of digital content, from web pages to images, multimedia to social media. 

It's free and has apps available. It also allows collaboration. 

Wikidot is a free wiki authoring and hosting site, allowing you to set up online forum based communities for creating and sharing content. 

Word2Clean is a digital conversion tool which allows you to easily transfer Word document content (or text written in a different program) to an HTML format exactly as written and without glitches.