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.
WorldData.ai - Analyze and download over 3.3 Billion curated external trends.
hiTask - HiTask is a free shared task list for your team. The place to plan, organize, and stay in sync.
data.world - The social network for data people
Mail Pilot - Beautiful task oriented email client for Mac, iPhone, & iPad
FileApp by Pipl - Pull users' missing data straight to your spreadsheet