20 different ways you can get your posts into your blog without logging onto your website and using the blogging platforms WYSIWYG editor.

BlogDesk
BlogDesk is totaly free of charge and optimized for the blog systems WordPress, MovableType, Drupal, Serendipity and ExpressionEngine as well as the bloghosters Blogg.de and Twoday.net.

BlogJet
BlogJet is a Windows blog client for managing multiple blogs, with features no web-based blog editor can match.Supports All Leading Blog Services: WordPress, TypePad, Movable Type, Blogger, MSN Live Spaces, Blogware, BlogHarbor, Squarespace, Drupal, Community Server.

Blog Writer
Zoundry helps you do more with your weblog: Recommend products. Drop in pictures. Tag your posts. Earn cash rewards for yourself or charities when readers buy from your recommendations. Supports: Blogger.com Atom API, Typepad Atom API, MovableType xml-rpc, MetaWeblog xml-rpc, LiveJournal LJ xml-rpc, Blogger v1 xml-rpc, Blogger v2 xml-rpc

Deepest Sender
Deepest Sender is a blogging client that runs inside Firefox, SeaMonkey, and XULRunner.

Ecto
Ecto is a feature-rich desktop blogging client for MacOSX and Windows, supporting a wide range of weblog systems, such as Blogger, Blojsom, Drupal, MovableType, Nucleus, SquareSpace, TypePad, WordPress

JBlogEditor
JBlogEditor is a FREE blog client to help manage blogs from the desktop, it uses metaWeblog and atom API to communicate with the weblog server. JBlogEditor is written in Java using the Eclipse Rich Client Platform. Support for multiple platforms. (windows, linux & macOS X). Publish to JRoller, WordPress & Blogger services.

Qumana 
Qumana is an easy-to-use desktop blog editor, enabling you to write, edit and post to one or more blogs.

ScribeFire
ScribeFire is a full-featured blog editor that integrates with your browser and lets you easily post to your blog. You can drag and drop formatted text from pages you are browsing, take notes, and post to your blog.

Semagic 
There are 2 versions of the program: version with full Unicode support only for NT/2000/XP and a version that works on Linux and Mac OS via Wine.

w.bloggar 
Post and Publish on most blogs/cms . It supports; Wordpress, MovableType, TypePad, Drupal, b2evolution, Nucleus CMS, Squarespace, Community Server, BlogEngine.NET

WB Editor
Supports; Wordpress, Movable Type, Blogger, MSN Spaces, Drupal, Community Server

Windows Live Writer
Windows Live Writer from Microsoft (especially version 2) is probably one of the best and most popular blog editing software around for Windows platform. Live Writer works with blog CMSs like WordPress, Movable Type, LiveJournal and Blogger. Read a review of Windows Live Writer here

WriteToMyBlog
WriteToMyBlog is a free web based word processor for your Blog. Create Post Entries for your Blog online, completely free, no membership required, can Post to multiple Blogs simultaneously, manage your Posts, works with all major Blog programs

Journler
iLife integration, audio and video entries, inline support for all manner of media, nested folders and smart families, an importer gone mad and instanteous searching and filtering.. Journler 2.5 requires MacOS 10.4 Tiger or better.

MarsEdit 
Powerful Blog Publishing For Your Mac. Write, preview, and publish without a web browser.

QTM 
QTM is a blogging client which is presently capable of composing, formatting and submitting blog entries to a weblog. QTM will work with blogs based on most of the major blogging systems available today: Wordpress, Movable Type, Drupal and so on.QTM itself, is available for Windows and all Unix-based operating systems including Mac OS X.

Qumana
Desktop blog editor supporting Windows and Mac - Platforms suported: MSN Spaces, Blogger, TypePad, Movable Type, Blogware, WordPress, Drupal, Brygh, Roller, Angelfire.

Linux:

BloGTK 
BloGTK - A Blog Client For LinuxBloGTK is a weblog client that allows you to post to your weblog from Linux 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. BloGTK is written using Python and PyGTK, and is designed to be fast and simple to use.

Drivel
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)

Gnome Blog
post entries to your blog right from the gnome panel