1. Technorati.com: Technorati is a real time search engine for blogs that tracks what is current and popular in the world of blogs on the web. It offers the ability to search blog postings using a tag library, list your blog and find out who's linking to it and from where. It only searches through blogs to find exactly what you're looking for.
2. Blogsearch.google.com: It is the Google's blog search engine, which searches the blogs and its contents around the world in the web. You can submit your blog for indexing on that search engine.
3. Blogarama.com: It is the categorized directory of blogs and journals. You can submit your blog for the listing on that.
4. Bloghub.com: Bloghub.com is both blog search engine and an online directory and community where members from around the world gather here and exchange ideas. You can search this blog directory for blog templates and blog skins You can submit your blog after registering on it.
5. Blogcatalog.com: It is a directory where you can promote your own blog, find blogs on various topics, or connect with other bloggers this site is for you. It gives rank to your blog and also analyze your hits, views, comments, neighborhood members and other special secret ingredients to create a numeric score based on a 100 point scale.
6. Search.blogger.com: It is the search engine of blogs all over the web. Blogger.com is the community of bloggers where all the bloggers can register for free, can submit their blogs and can exchange their ideas and experiences while blogging. By submitting your blog on this site, you can drive lot of traffic on your blog.
7. Blogdigger.com Blogdigger uses state of the art syndication technologies, such as RSS and Atom, to index blog content and make it available for search. Blogdigger also makes all search results available in RSS or Atom, so users can subscribe to keyword searches and automatically be notified, via the News Aggregator of their choice, of new content pertaining to their interests.
8. Bloggeries.com: Bloggeries.com is a blog directory with forums, reviews, resource links and tools. Submitting your blog is easy and you will be listed in our directory within 24-48hrs if your blog is approved. There are number of plans for listing blogs, you can choose anyone which is suitable for you.
9. Globeofblogs.com: It is the directory of blogs from around the world. You can find blogs by their title, topic, author information or location. You can register here for your blog to make sure that readers can find you. Here only non-commercial blogs are accepted.
10. Bloggernity.com: Bloggernity.com is the blog search engine and directory on a range of topics, from around the world. You can search this directory for latest news, entertainment, humour and politics issues. You should sign up there to submit your blog for listing.
11. Blogs.botw.org: It is the best of the web blogs directory, which is a powerful tool for sharing your blog, especially since this director’s very selective, listing only mature and valuable blogs. You can submit your blog here.
12. Blogflux.com: Blogflux is designed to be a central destination for the blogosphere, providing you everything you need to get your blog up and running. You can submit your blog by registering on it.
13. Bloghints.com: Blog Hints is a Blog Directory and only blogs will be approved. You can not submit sites other than a blog. All Blogs are human reviewed for appropriate and quality content.
14. Bloguniverse.com: Blog Universe has a layout that’s easy to navigate and, although the content is limited, it’s an all-around good directory worthy of submission.
15. Chinabloglist.org: China Blog List (CBL) is a collection of links to English language blogs focused on China. It provides firsthand accounts and independent views of China.
16. Britblog.com: It is British Blog Directory which is collaborative blog for British bloggers. You can submit your blog here on free of charge.
17. Blogio.net It is the blog directory where you can submit your blog on free. There are different categories like Art, Business, Computer and Internet, Home and Garden, News, Personal, Politics etc.
18. Ontoplist.com: It is free, manually edited directory that reads the RSS feed of your blog. You can also use the social features, article directory, and other great tools for your blog.
19. Blogstreet.com: Blogstreet.com tracks related web logs in blog neighborhoods, top blogs and blog rolling.
20. Bloggingfusion.com: Blogging Fusion Blog Directory is a premiere blog directory on the internet. You can promote your own blog to increase revenue, back links and readership or improve your search engine visibility. You can submit your blog to increase your traffic & exposure.
There are thousands of such blog search engines and directories. These are only some top of them. If you know about any other than the above listed, you can suggest that on the comment session.