SysInfo PST File Viewer - Outlook PST File Viewer Tool enable users to open, view or read PST files without requiring Outlook, it scans all the important items of PST such as calendars, contacts, notes, tasks and journal entries etc.

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.

Coolutils Outlook Viewer - Coolutils Outlook Viewer is an all-in-one open application that lets you open and views PST or OST files, and you do not need to install Outlook on your computer.

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.

Freefileviewer - Free viewer for PDF, DOC, DOCX, PHP, CFG, DAT etc. files

Wondershare PDFelement - All-in-one PDF editor