Linux Softwares to Periodic reminders

ActiveInbox transforms your Gmail inbox into a powerful task manager, helping you prioritize emails, manage projects, and achieve Inbox Zero with a Getting Things Done (GTD) approach directly within your familiar email environment.

Nozbe is a robust task and project management application designed to help individuals and teams implement the Getting Things Done (GTD) methodology for enhanced productivity and collaboration. It offers a flexible environment for managing tasks, projects, and time effectively.