Established Mainframe Connectivity Software

Comprehensive Terminal Emulation & Legacy Software Modernization

Fortune 1000 companies trust Jolly Giant

Reliable, fast, efficient and secure Windows® O/S to IBM mainframe and AS/400 connectivity solutions and support, now with web and mobile interface options.
Are you using another Terminal emulation product?
Are you ready to trade up, save money, and get better support?
Modernize and optimize your systems
Reduce your terminal emulation costs by at least 50%
Utilize free professional migration services from Brandon Systems
Jolly Giant Products
Our products supply terminal emulation and data transfer via the TN3270 and TN5250.
Using TCP/IP and the Winsock interface, this application allows you to quickly connect to your IBM mainframe over LAN and dialup connections.

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QWS3270 Secure
QWS3270 Secure is a 3270 emulation application that allows PCs to connect to SSL enabled IBM mainframes over a secure TCP/IP connection.

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Using TCP/IP and the Winsock interface, this application allows you to quickly connect to your A/S400 over LAN and dialup connections.

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Wire (NEW)
WIRE offers a web based modernization platform to enhance and improve the user interfaces of mainframe applications and deliver them to web and mobile platforms.
Who’s using our software?

More than 1,000,000 copies have been licensed worldwide

Jolly Giant Software has become a major supplier of mainframe connectivity solutions to Fortune 500, mid and small sized businesses and organizations around the world.

Our customers agree — we are doing it right!

“JGS has always been very responsive — much more responsive than the larger well-known software companies.”
“After 35+ years of dealing with software vendors, I’m not easily impressed with their service. I am continually amazed at the level of support JGS provides. And you may quote me on that!”
“Your QWS3270 product is indeed a gem. As a mainframe programmer, I spend many hours every day using your product. For its small size it offers great features…nice friendly keyboard remapping, color customization, etc. Thanks for making my job a little easier.”
“We use QWS3270 on all 7 of our campuses. Updates are timely and they can even FTP them right to our server. Whenever we have questions, they are quick to reply either via e-mail or over the telephone.”
Latest Blogs
End of life for QFTP Product

End of life for QFTP Product

As of July 1, 2017, Jolly Giant will discontinue the QFTP product. Existing customers can continue to use the software and we will provide support until the end of their…

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