Kerica.com - Very nice tool for organizing task, team based, free
Swipe.to - very cool tool for live presentation and basic live polls - free subscription for limited version
Typeform - very very very cool tool for surveys and questionaires ... awesome, best I've seen ... and I've seen a lot. Well worth a study if you are serious about gathering feedback.
Zapier - ONE TOOL TO RULE THEM ALL ... awesome doesn't cover this. Integration tool ... integrate hundreds of apps, google docs and more ... fanfuckingtastic tool!!!
Interesting article - best apps and tools of 2017
Airtable - Tool for building web databases / backends. Looks very interesting