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.
JASP - JASP, a low fat alternative to SPSS, a delicious alternative to R.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
RStudio - RStudio™ is a new integrated development environment (IDE) for R.
Slack - A messaging app for teams who see through the Earth!
PSPP - PSPP is a free software application for analysis of sampled data.