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.
Sortd - Rated the #1 App for Gmail
Crowdin - Localize your product in a seamless way
Drag for Gmail - Transform Gmail into organized To Do lists (like Trello)
POEditor - The translation and localization management platform that's easy to use *and* affordable!
KanbanMail - A Kanban board for your emails.
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.