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.
Notion Charts - Generate embeddable charts, beautifully optimized for Notion
GoodGantt - The best Gantt chart for Trello®
Notion2Charts - Notion2Charts is an easy to use online tool to generate beautiful embeddable charts from your Notion databases.
Paws for Trello - The best way to use Trello on your desktop
Potion.so - Create custom websites in minutes. All on Notion. Potion adds the magic, generating a speedy site with custom domains, styles and great SEO.