An active list refers to a group of names, items or records that are currently being used or attended to. Synonyms for an active list include a live roster, a working inventory, a current register, an operational index or a comprehensive checklist. These terms denote an ongoing compilation of information that is constantly being updated and reviewed. An active list is typically highly valued in business, as it helps to ensure that tasks and projects are completed efficiently and that progress can be tracked in real-time. Regardless of the terminology used, an active list remains an essential tool for any organization that wishes to stay organized and productive.