In addition to my own list (here), I’ve run across the following lists of search engines (and other internet research tools):
- Search Engine List (Did you know there were more than two hundred?)
- Wikipedia: Category:Internet search engines
- Wikipedia: List of academic databases and search engines
- Freebase: Search Engines
- Pandia Powersearch: All-in-One List of Search Engines and Directories
- Academic and Scholar Search Engines and Sources
Are there any other lists I should include?