AnnounceKit - Announce product updates like a boss 😎

Ghost - Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.

Beamer App - Announce new features, latest updates, important news and more with an out of the box notification center and changelog tool as a service. Try it for free.

Medium - Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.

Olvy - Announce new features with beautiful and effective in-app widgets and standalone pages with our powerful release note tool, and see your release feedback turn into insights.

Tumblr - A feature rich and free blog hosting platform offering professional and fully customizable templates, bookmarklets, photos, mobile apps, and social network integration.