Teddy Hyde is the no compromises, extensible editor for GitHub (with a focus on Jekyll blogging).
100% open source. Find it on Github @ http://github.com/xrd/TeddyHyde
Now with secure oAuth login. Supports two-factor authentication and never asks for your password directly.
Edit files directly on GitHub and publish to GitHub pages.
Preview markdown or asciidoc pages with just a swipe.
Intelligent editor knows about YAML Front Matter for Jekyll posts.
Upload images which are resized to a mobile friendly version and a thumbnail.
Add your own extensions to the editor using "Hyde Transformations."
See more at TeddyHyde.com or Blog.TeddyHyde.com.
Updated GitHub client id and secret (removed from GitHub repo).
Add support for contextual templates as documented on the blog: http://bit.ly/1o3Z48z
Add support for organizations. Click on the avatar link to switch to other organizations and edit files there.
Added oAuth authentication (instead of username/password) which supports 2 factor authentication. Thanks to David Wu for his great oAuth library for Android (https://github.com/wuman/android-oauth-client/)