Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
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.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
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.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Wondershare PDFelement - All-in-one PDF editor