Blog

1. Amatomu: The South African Blogosphere, sorted. Amatomu searches blogs with a distinct focus on South Africa.
2. Bloglines: is a web-based news aggregator for reading syndicated feeds using the RSS and Atom formats. Sold to Ask.com in 2005.
3. Blogperfect: Google Powered Blog Search
4. BlogScope: Search & analysis tool for the blogosphere being developed as part of a research project at the University of Toronto. Itcurrently tracks over 23.5 million blogs with 275.6million posts.
5. IceRocket: An Internet search engine for searching blogs.
6. Sphere: connects your current articles to contextually relevant content from your archives as well as from Blog Posts, Media Articles, Video, Photos, and Ads from across the Web.
7. Technorati: catalogs over 112 million weblogs. Known as a kind of gauge for blog popularity as epitomized by its byline of "What's percolating in blogs now". A supporter and contributor to open source software.