Get Smartsheet for Gmail & try a very nice add-on for Gmail that allows you to manage your sheets with data and attachments without leaving your inbox.
Tagged: task management
Download Trello for Gmail and instantly experience one of the best add-on for Gmail that allows you to manage your Trello boards without leaving your inbox.
Get Kanbanchi for Chrome and you can easily manage your projects or tasks online. It comes with unique features like synching with your Google Drive.
Get Wunderlist for your Chromebook or Chromebase. An awesome to-do list app that you can also use on your android phone and tablets.