Twitter + GitHub = TwUI
GitHub for Mac is powered by TwUI, Twitter’s open source, Core Animation-based UI framework for Mac. It’s the same framework that drives Twitter for Mac. TwUI lets us create fast,…
GitHub for Mac is powered by TwUI, Twitter’s open source, Core Animation-based UI framework for Mac. It’s the same framework that drives Twitter for Mac. TwUI lets us create fast, animatable UIs using modern APIs. It’s fantastic.
We’ve made a lot of fixes and additions in our TwUI fork:
We’ve been working with the fine folks at Twitter to figure out the best way for us all to make TwUI more amazing.
They invited us to join forces.
What does it mean?
TwUI has a bright and glorious future.
All of our changes are now in the original TwUI repository. That includes a lot of bug fixes, HiDPI support, and our sweet new popover:
.
We’re excited to work with Twitter to make TwUI even more awesome.
Written by
Related posts

GitHub Availability Report: August 2025
In August, we experienced three incidents that resulted in degraded performance across GitHub services.

Your guide to GitHub Universe 2025: The schedule just launched!
Create your own agenda of favorites, sign up for one-on-on mentoring sessions, and register if you haven’t already. We’ll see you there!

Explore the best of GitHub Universe: 9 spaces built to spark creativity, connection, and joy
See what’s happening at Universe 2025, from experimental dev tools and career coaching to community-powered spaces. Save $400 on your pass with Early Bird pricing.