Planning Poker - Open source implementation of planning poker game (collaborative online estimation/voting tool).

Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.

Firepoker - Agile Planning Poker powered by Firebase and AngularJS

Microsoft Teams - Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.

Taiga - Project management platform for agile developers & designers

RingCentral Video - Live life unlimited. Free video meetings and team messaging in one app that works the way you do.