Apps with 'Custom notifications' feature

K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.

KVIrc is a free portable IRC client based on the excellent Qt GUI toolkit. KVirc is being written by Szymon Stefanek and the KVIrc Development Team with the contribution of many IRC addicted developers around the world.

Using social proof & FOMO marketing tactics, NotificationX helps you to gain trust and create urgency to skyrocket your WordPress conversion rates.

CPV Lab Pro is a powerful and affordable self-hosted Ad and Affiliate Tracker that can optimize your campaigns, conversions and increase ROI.

Allow notify yourself of important events.

Voluum is known in the digital advertising industry as a leading and the most sophisticated performance tracker. With insights into user acquisition and lead generation campaigns, we know everything about the performance. So do you, if you’re using Voluum.