Chrome DevTools - Get started with Google Chrome's built-in web developer tools.
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.
puppeteer - Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium...
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Reactotron - A CLI & OS X app for inspecting ReactJS & React Native apps
Slack - A messaging app for teams who see through the Earth!