Slack offers several ways to manage to-do lists without leaving the app, including Slack lists, which allow users to track tasks directly from Slack and collaborate with their team; Slack Canvas, which can be used to store information that's not easy to search, such as important links or style documents; slash commands, which can be used to set reminders for oneself or others; and saving messages for later, which allows users to bookmark messages they want to come back to. Additionally, Slack integrates with popular to-do list apps like Notion, Trello, Asana, and Todoist, allowing users to send messages to these apps with a few clicks. These integrations can be customized using Zapier's Push to Zapier action, which enables users to create custom workflows between Slack and their favorite task managers.