Trello is great, that's why there is a million various clones of it out there.
Here are a few commonly referenced project management platforms with the common kanban board feature.
- Asana is often recommended for medium size teams
- Jira, targeted at enterprises
- Linear, a new player on the field aimed at speed and productivity
- Monday is aimed at the people side of things more than the task side of things
- Tara for a purely sprint based task management workflow
- Portabella is my spin at a more secure and privacy preserving future on the web. End-to-end encrypted project management, competing primarily with Trello and Asana.
There are many others I haven't mentioned here but these are the most common I've seen referenced here on Indie Hackers.
What are you using to plan out projects?