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Here is the list of free Blog editors:

1. Qumana: Lycos-Qumana is a free and easy blogging editor to post to one or more blogs – including Tripod blogs.
2. Zoundry Raven: Zoundry Raven is a WYSIWYG blog editor that makes posting to your blogs easier and faster. It’s as easy to use as a word processor, plus we include simple tools to add links, tags, photos, music and video files, and more.
3. Wbloggar: The w.bloggar is an application that acts as an interface between the user and one or more blog(s); in other words, it is a Post and Template editor, with several features and resources.
4. BlogDesk: Writing new entries online using your weblog’s control panel can get complicated and time-consuming, especially if you want to format your text or insert images. BlogDesk will make publishing a lot easier and speed up the whole process. Composing offline and using BlogDesk’s extra features benefits beginners and experienced writers – they all can focus on the content instead of wasting time with technical details.
5. Post2Blog: Post2Blog 3 is a FREEWARE handy blog editor with live spell-checking support for pro-bloggers.
6. Scribefire: ScribeFire is an extension for the Mozilla Firefox Web Browser that integrates with your browser to let 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.
7. Windows Live Writer: Easier, Faster editing, modification of your posts and Drafts. Support for Multiple Blogs and cross posting and much more.
8. Blogmate: BlogMate is a free, graphical plug-in (+ a bundle too) for the popular TextMate editor that enables creating and editing blog posts for MetaWeblog-enabled blogs, Twitter, and Jaiku accounts from a floating palette within TextMate.
9. Bleezer: Blog from anywhere, Work on Windows, OS X, and Linux. Work with any blogging service. As many as you want, even Blogger. WYSIWYG editing, Image upload, Support for multiple categories, Add tags for any tag service, Create custom markup, Spell check, and
   Work online or offline.
10. Thingamablog: Thingamablog is a cross-platform, standalone blogging application that makes authoring and publishing your weblogs almost effortless.
11. Webpad: Webpad is a web-based text editor which gives you access to files from any of the following locations, Your own computer (via file upload), The server that webpad is installed on (via direct file manipulation), Any FTP server (via FTP file operations), Any website (via remote file requests), Popular blogging tools (Blogger.com, MovableType, TypePad, LiveJournal, blosxom, WordPress), Other data sources via a flexible plugin system.
12. Xinha Here: Xinha Here! is a Firefox extension wrapper for the Xinha HTML editor. It enables WYSIWYG editing in any textarea and text box on any website. Xinha Here! opens a Xinha HTML editor in your browser allowing you to edit the data in a WYSIWYG on any website without copying and pasting to secondary HTML editor.
13. Write to my blog: WriteToMyBlog is a free web based word processor for your Blog. Create Post Entries for your Blog completely free, no membership required, can Post to multiple Blogs simultaneously, manage your Posts, works with all major Blog programs, and is easy.
14. Google Docs: Import your existing documents, spreadsheets and presentations, or create new ones from scratch.
    All you need is a Web browser. Your documents are stored securely online. Invite people to your documents and make changes together, at the same time.
15. Flock: Flock’s built in blogging tool lets you easily blog anything from anywhere. You can add photos from your online photo service, a graphic on your local machine, text from your buddy’s latest post, rich formatting and more. Flock’s built in Blog editor ties it all together quickly and easily leaving you more time to write.
16. Swiftpen: Easy multiple blog posting — just compose your post and select blogs to publish it. Nothing to download, nothing to install. Just start your browser. One-page history of all your blog posts. WYSIWYG post editor — powerful, yet easy to use.
17. Stuffr: Stuffr, a desktop blogging client for Windows, has a streamlined design that works in conjuction with multiple weblog platforms.