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.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
Search and Replace - Don't worry about those many files where you have to change a few things!
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Actual Search And Replace - This is an advanced tool to perform the search and replace operations across multiple text files. It supports the regular expressions syntax. The batch replace operation allows to execute a lot of various replacements with one click.
Wondershare PDFelement - All-in-one PDF editor