What are some alternatives?
When comparing Collabio and Microsoft Office, you can also consider the following products
Google Drive - 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.
LibreOffice - Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.
WPS Office - Would you need Office Word, Excel or PowerPoint for Home, business or School? WPS.com would give you right version for you.
PDF Expert - Download a free trial of PDF Expert - the best PDF software for your Mac. Enjoy advanced reading layouts, powerful PDF editing and classical annotation tools.
ONLYOFFICE - ONLYOFFICE is a complete office and productivity suite.
Pocket Scanner - Pocket Scanner is the best app for quickly scanning documents to JPEGs or multi-page PDFs.