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Open Live Writer is an open source application enabling users to author, edit, and publish blog posts. It is based on a fork of the well-loved but not actively developed Windows Live Writer code. Open Live Writer is provided under a MIT license.

MarsEdit is a blogging client for your Mac which lets you publish articles to your blog right from your desktop, without having the need of opening your web browser and logging into your blog.

Blogging should be simple, but it gets complicated and time-consuming if you are serious about it. BlogDesk makes it easy to write, speeds up lavish processes and assists the author with smart features.

The most advanced Windows blog editor and manager. Get convenience and speed of a native application, and the ability to write posts offline.

GNOME blog is a desktop blogging application for Linux and Unix. Easy and quick to use to help you writing your great blog posts.

Post2Blog is a desktop blogging client software that helps to update your blog without visiting a web-site and can help to compose posts offline, post selected text from Internet Explorer, Firefox, publish pictures and files directly from Explorer or even use MS Word as editor to compose new posts.

Drivel is a GNOME client for working with online journals, also known as weblogs or simply "blogs". It retains a simple and elegant design while providing many powerful features, including: Support for LiveJournal, Blogger, MovableType, Advogato, and Atom journals (systems based off these are also supported, including WordPress and Drupal), the ability to post, edit, delete, and view recent entries, integrated spellchecking and HTML syntax highlighting, offline composition and editing, automatic recovery in the event of a crash, journal system extensions, including LiveJournal security groups and MovableType categories. »