Ranked in these QuestionsQuestion Ranking
Pro Add date and person assigned in one line
Pro Very simple
You can get going in 2 minutes.
Pro Managed completely within Slack
You don't have to leave Slack at any point to use /todo. You add, edit, assign and view tasks from within Slack.
Con No GUI
/todo is text-based. There are no buttons, there's nothing to click or tap. You have to use slash-commands which might not be as intuitive as a graphical user interface to everyone.