7sDoc is a freeware application which is a search engine tool for searching files, located on your computer. The program can quickly search files by content data. 7sDoc scans your selected directories with your document files and builds search index on files content for further quick search. The application can perform text search in files such as DOC, XLS, RTF, TXT, HTML. You can use this tool to search files on Windows 7, Vista and XP.
First you need to create and build an index and you can add the number of directories to be added to the index.
The program creates the list of files, that matched your query. Each file is estimated by several parameters such as frequency of search phrase, phrase position inside the file, presence of search phrase in filename, importance of search words, file size, file age, etc. This estimation is used to sort the list of found files by relevance to your query. The program’s search algorithm can look for document that match the given words and some variation around them.
Anytime if you add new directories to the list, then you need to manually index them again.