A tickler file is a useful organizational tool that reminds you of important tasks and deadlines before they come up. However, if you're looking for synonyms to use in your workplace or personal life, there are a few options available. These include a Follow-Up File, Reminder System, Calendar Alerts, To-Do List, and Action Plan. Each of these alternatives offers a slightly different perspective on the concept of a tickler file and is suited for different types of tasks. However, they all share the goal of keeping you organized and on top of your commitments, no matter how busy your schedule gets.