Todoist is an online task manager with a very simple interface and built-in calendar. You can organize your tasks into projects and even sub-projects and sub-tasks. It includes reminders, Gmail integration, Outlook integration, Mac and SmartPhone
Together - Mac software to store text, documents, images, movies, sounds, web pages and bookmarks can all be dragged to Together for safe keeping, tagged, previewed, collected together in different ways and found again instantly.
Shovebox - Mac software to store those little scraps of information that you can’t act on now but would rather not forget. It sits up in your menubar, waiting for you to drag in text, images, URLs, and more.