Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.

Polipo - A small and fast caching web proxy (a web cache, an HTTP proxy, a proxy server).

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.

ExaProxy - ExaProxy is a a high-performance non-caching proxy.

Wondershare PDFelement - All-in-one PDF editor

Privoxy - Privoxy helps users to protect their privacy.