PlanITpoker - PlanITpoker is a cool on-line planning poker app that helps Agile project teams estimate projects easily.
Obsidian.net - Obsidian is an Action-Adventure, First-person Exploration, Puzzle and Single-player video game created and published by Rocket Science.
Firepoker - Agile Planning Poker powered by Firebase and AngularJS
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Planning Poker - Open source implementation of planning poker game (collaborative online estimation/voting tool).
Ultimate Brain for Notion - The Ultimate Second-Brain Notion Template