Paid plans start at $10 per month, with few or no limitations. Its unlimited storage is restricted to 10 megabytes per file. The basic free tier includes unlimited users and cards, up to 10 boards, and just one Power-Up (Trello's clever phrase for its integration with other services) per board. Once you're finished with a particular card or an entire board, it can be archived to hide it from daily view while still being accessible if needed in the future.
There's plenty of power under the hood, with cards able to include images and attached files, hyperlinks, custom dropdowns, due dates, and plenty more. You can manage both individual projects and ongoing workflows equally well, and the board and card metaphors are easy to understand. Kanban is a lean project-management system that balances work demands with available capacity to improve system bottlenecks. Rather than traditional tools designed for managing resources and tracking progress towards a specific end date, kanban-based apps like Trello are more free-form and flexible.
Based around the kanban card-based management system, Trello's simple interface and generous free tier makes it the ideal place for individuals and small teams to get started with basic project management.