Planner and Trello both offer project management centered around the popular Kanban board method. You can create tasks as cards and assign them to team members, then communicate with stakeholders in comments.
Both apps also offer ways to organize projects into different views, though both emphasize Kanban. You can see a list view in Planner, and Trello lets you see calendars or timelines with a paid upgrade.
Both apps integrate with other tools to support automation and cross-platform collaboration. Planner is part of the Microsoft 365 for Business suite, and Trello lets you add integrations with third-party apps using free Power-Ups like add-ons.
Unlike some other project management tools, neither Planner nor Trello are designed for data management. Both integrate with spreadsheet apps, allowing you to link databases to tasks and projects.
Neither Planner nor Trello is designed to organize information the way competing app Notion does. But both integrate with Creative Suites, so you can link to external documentation and use Planner or Trello boards to organize it.
Planner integrates with Microsoft Office tools as part of the 365 suite. Trello integrates with major third-party apps, including Google Drive.
To make it easier to work on creating documents and databases with team members, Planner and Trello both integrate with workspace tools. Planner comes with a subscription to Microsoft Office 365 for real-time document collaboration, and Trello integrates with Google Drive.
Microsoft Planner outperforms Trello and other competitors when it comes to file storage. With its OneDrive integration, included in your Microsoft 365 for Business plan, you have access to 1 TB of storage.
Trello offers unlimited storage with all plans, including its free plan. It limits individual file sizes to 10MB for free plans and 250MB for paid plans.
Neither Planner nor Trello include built-in automations, but both allow you to add options to automate parts of your workflow. On Trello, you can add Power-Ups to add features or third-party apps that create automations. On Microsoft, you can subscribe to Power Automate for $15 per month to set up automations with any apps you use in the Microsoft suite.