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.
SMMRY - Summarize articles, text, websites, essays and documents for free with SMMRY.
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.
TLDR This - Automatically summarize any article or webpage in a click.
Wondershare PDFelement - All-in-one PDF editor
Free Summarizer - Summarize *any* text online in just a few secs. *MAGIC*