Flow-e is a visualization layer on top of your Gmail or Outlook inbox. It provides an elegant Kanban-like workflow that's combined with the ideas behind Inbox Zero and GTD. Flow-e eliminates the need of external task management tools and transforms your inbox into a central To Do app.
KanbanMail - A Kanban board for your emails.
Vabotu - More than slack. More than Trello. FREE.
Sortd - Rated the #1 App for Gmail
Do - Do helps you run productive meetings. Do work you love.
Drag for Gmail - Transform Gmail into organized To Do lists (like Trello)
Kurator - The premier Chrome extension for savvy researchers and publishers alike. Curate your interest and publish to your website, newsletter and social media sites directly from the browser.