Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
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.
Microsoft Authenticator - One app to quickly and securely verify your identity online, for all of your accounts.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
LastPass Authenticator - LastPass is an online password manager and form filler that makes web browsing easier and more secure.
Wondershare PDFelement - All-in-one PDF editor