Lunyr - A decentralized crowdsourced encyclopedia.

Raindrop.io - All your articles, photos, video & content from web & apps in one place.

Tealfeed - A knowledge sharing platform to empower creators

Barkr - Organise bookmarks into collections and then find your favourite websites quickly and easily, using an intuitive search rather than wading through masses of folders.

BoostHQ - An online community platform for your employees to gain knowledge, share experiences and learn from each other.

Pinboard - Pinboard is a personal archive for things you find online and don't want to forget.