RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
FileProInfo - It's All About Files, Software, Online Tools - 100% Free
Batch Word Replace - Replace text in, add or remove content, and edit thousands of Word documents in doc and docx formats, PDFs, RTF documents, and other text documents.
Doxillion - Download fast and easy to use document file converter for PC or Mac. Convert Word, Doc, Docx, PDF, WPS, ODT, TXT, RTF, WPD, HTML, XML, word perfect and more source code file types. Freeware for home use.
Search & Replace Master - Search & replace the text in your files in seconds.
Convertio - File Conversion in the Cloud