MarsEdit is a blog editor for OS X that makes editing your blog like writing email, with spell-checking, drafts, multiple windows, and even AppleScript support.
It works with with most blog services including WordPress, Blogger, Drupal, Movable Type, TypePad, and many others.
Fix a bug where images from Media Manager were not always permitted to be inserted into posts
Fix a bug that could cause slow text layout in the plain text editor
Disable Tags field when editing WordPress Page entries, where they’re not allowed
Ensure escape and cmd-. keyboard shortcuts work as expected for cancel button in panels
Enable the ‘Copy Published Link’ and ‘Send to Blog’ menu items when the preview window is active