Sortd - Rated the #1 App for Gmail
Dolphyn Receipt Manager - Smart way to track your receipts
Drag for Gmail - Transform Gmail into organized To Do lists (like Trello)
Get My Receipts by cloudHQ - Organize your receipts in one click
ExpenseBot - ExpenseBot takes the hassle out of expense reporting with our intuitive interface and powerful integrations. Your employees will love us, and so will you!
OneBox.io - Sync e-mail attachments to GDrive, Dropbox, Box, or OneDrive