Agenda - A date-focused note taking app for both planning and documenting your projects.
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.
Notepin - Extremely simple note-taking + blogging ✍️
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.
Bear - Bear.app is a note-taking and content writing app that helps you boost productivity with its intuitive tools.
Wondershare PDFelement - All-in-one PDF editor