Paco - Never miss a thing on Slack — be more calm and productive

Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates

awesome - A dynamic window manager for the X Window System developed in the C and Lua programming languages.

Front - The platform for exceptional customer service at scale.

Lowdown - Lowdown unleashes the valuable content locked within Slack and emails it to your members so they don't miss key information.

HelpScout - Help Scout is a simple, straightforward way to provide excellent support