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.
StatusPage.io - StatusPage.io is the best way for web infrastructure, developer API, and SaaS companies to get set up with their very own status page in minutes. Integrate public metrics and allow your customers to subscribe to be updated automatically.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
UptimeRobot - Free Website Uptime Monitoring
Slack - A messaging app for teams who see through the Earth!
FreshStatus - Better status pages in 1-click, FREE FOREVER