Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.

Expensify - Import expenses directly from a credit card to create free expense reports quickly. Approve reports online and reimburse directly to a checking account with one click.

Streak - Manage customers inside Gmail

Zoho Expense - Automate your expense reporting process and streamline the approval flow.

NetHunt CRM - Turn Gmail into a smart CRM

Spendesk - Smart spending solution for agile teams