Wordpress:
Wordpress Builder
http://www.wordpressbuilder.com/ Now Free! ~~ membership.Enables the automated creation of Wordpress blogs over multiple domains and subdomains. You can manage themes, plug-ins, categories, etc. Basically every setting. You can set up a default profile. Claims you can make 1,000 blogs per day!


Wordpress Automator
http://www.pauls-test-place.info/wp.htmlAutomated installation of your own WP blogs over domains and subdomains. You can set up defaults so all you have to enter is three fields for each new blog.

WP Automator
http://www.wpautomator.com/Adam Short Not ready yet. Being built by an NC person.Wordpress Multi-User
mu.wordpress.org

Free

Creates a special WP install that allows an unlimited number of users. Each user can have one blog, and has freedom to alter it.

 

Proprietary:
Auto-Blog Builder
http://www.autoblogbuilder.com/

By Will Allush, $97

Builds its own proprietary blog. You enter the settings, and it does the build. Some format controllable. Allows creation of multi-keyword blogs quickly. Builds xml pages. Foreign language support. Looks more like a site builder than a blog??

 

Blogger:

Viral Instigator

See full review here.

Viral Instigator
 

Fast Blogger Generator
http://www.fastbloggenerator.com/ 

$97, 60 day MBG

Builds Blogger blogs hosted by Blogger. Removes no index/no follow tag, ads Adsense, hides spam reporting feature.  Blogs and usernames stored in text file. Edit, create, and save your own templates. Proxy to mask IP. Includes posting software. Removes the deleted blogs from posting. Appears to be the same functionality as Blogger Generator.

Blogger Generator
http://www.bloggergenerator.com/

By Joseph Tierney, $197, 60 day MBG

Builds Blogger blogs hosted by Blogger. Removes no index/no follow tag, ads Adsense, hides spam reporting feature.  Blogs and usernames stored in text file. Edit, create, and save your own templates. Proxy to mask IP. Includes posting software. Removes the deleted blogs from posting. Appears to be the same as Fast Blogger Generator.

Auto Blog Generator
http://www.autobloggenerator.com/

By Satyajeet Hattangadi, $197, 30 day MBG

Looks the same as Blogger Generator and Fast Blogger Generator.
VooDooBlogger
http://www.voodooblogger.com/

$147, try before you buy

Look same as above.  Says you can post instantly to all blogs.

Blog Mass Installer

http://www.blogmassinstaller.com/

$197, 30 day MBG 

Installs Blogger blogs on your domains, and sets up a first test post to get the blog started.