The Influencer Marketing Stack - Free resources to launch a killer campaign
UnderPinned - One app to manage your projects from start to finish.
Startup Stash - A curated directory of 400 resources & tools for startups
Tapwater - All project details. One place.
Makerbook - A directory of the best free resources for creatives
Planning Poker - Open source implementation of planning poker game (collaborative online estimation/voting tool).