Company yo gg llc created these great apps:
Desk PM: A Writing, Blogging, and Notetaking App, Desk NT: A Writing and Notetaking App, Desk MD: A Markdown-Powered Blogging App, Teeny Tokyo: A Small Yet Powerful Image & Photo Resizing App, Desk 3: Writing, Blogging, and Notes for WordPress, MNML: Writing, Blogging, and Notes for Medium.com, and others..
