The KeywordThief extracts the keywords from the Keyword Metatag, from the sites listed in the SERPs (search engine result pages) of Google, Altavista, Open Directory or other search engines.
Aiseesoft PDF Merger is the best and simplest PDF merging tool in the world. It has the ability to accurately merge many PDF documents into one or merge many parts in a PDF file to a new PDF file.
Kool Keyword Density Tool: Quickly scan the keyword density on your articles for top SEO rankings. Also instantly compare any two articles for duplicate content. Saves a ton of time!
If you have lots of documents and want to merge doc docx files then use batch document merger you can merge hundreds or thousands of Microsoft Word docx+ doc (or doc + docx) files in few seconds.
Stop spending hours wading through your keyword lists. KeyCleanse is a free application that can clean your keyword list in seconds. KeyCleanse removes the keywords that do not meet your requirements and leaves only the keywords you need.