FIRST - Post a date, pick a winner & meet up.
Nifty - Manage projects, work, and communications in one place.
Marketing Teams and Slack - A handbook for marketing teams to make the most out of Slack
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Startup Marketing Playbook - The how-to guide for new B2B marketing leaders
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.