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.
Zylo - Zylo helps organizations optimize their SaaS investments by providing insights around Spend, Utilization, and User Feedback.
Sortd - Rated the #1 App for Gmail
Siftery Track - Effortlessly visualize & optimize your team's software spend
Drag for Gmail - Transform Gmail into organized To Do lists (like Trello)
Cardlife - Track all your business subscriptions with Cardlife.
KanbanMail - A Kanban board for your emails.