HelpStack - Open Source mobile help framework to support iOS and Android app users.
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.
Helpshift - Helpshift is an in-game customer support platform that enables mobile apps to improve customer experience, drive higher ratings and increase retention.
Wondershare PDFelement - All-in-one PDF editor
KeyReply - Omnichannel keyboard for mobile teams to respond better and faster.
Microsoft Word - Microsoft Word is a commercial word document processor for Windows.