Writing and editing websites. It's possible to both post and reopen posts and edit them without any changes to the code. What's very special is the built-in support for Markdown. Plain text HTML editing and WYSIWYG are also supported.
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.Discontinued
The project seems no longer developed. Last version, 0.6.2.0, released in May 2017, can be still downloaded from GitHub
Client for LiveJournal, Blogger, Wordpress Image upload to LJ Scrapbook, Flickr, fotki.com, imageshack.us, Picasa, Yandex Fotki.Discontinued
Last version was in 2015https://sourceforge.net/projects/semagic/
An award-winning & beloved desktop publishing client, exclusively for OS X.
You are a storyteller, passionate about crafting narratives that capture, express, and delight in what it means to be human.Discontinued
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...Discontinued
The last release (3.0.0) is from October 2009.
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...Discontinued
The software is now listed as "Old and deprecated software" and offered for free but with no support. Last version, 3.01, released in June 2007, can be still downloaded from Download.com and Free-Downloads.com
BloGTK is a weblog client that allows you to post to your weblog from GNOME without the need for a separate browser window. BloGTK allows you to connect with many weblog systems such as Blogger, Movable Type, WordPress, and more.Discontinued
No updates in years. See https://sourceforge.net/projects/blogtk/
MoPress is a blogging client application developed for mobile phones. It allows a mobile phone to post a content (text, image, audio, video) to a Blog, using any type of available network (mobile phone network or Wi-Fi network).
WebStory comes with a WYSIWYG blog editor that makes it an extremely useful desktop blog management software that helps you to write, edit, back up and manage multiple blogs, microblogs and web albums.Discontinued
The program is no longer updated. Last version, 5.4, released in September 2012, can be still downloaded from the official website.