Links:
1. Library Spot
Encyclopedias, maps, online libraries… This offers annotated listings of sites. It is a great place to find primary sources for your research.
2. Sweet Search:
Sweet Search is a search engine for students. It searches only credible web sites approved by Internet research experts.
3. iSeek:
ISeek allows you to type your question into the query box in plain English. It searches deeper than traditional engines to produce the most specific & relevant results.
4. Refseek:
Refseek is a web search engine for students & researchers. It searches documents, including web pages, books, encyclopedias, journals, & newspapers.
5..PlagScan:
Free Plagiarism checker.