The AS/400 - also called the "IBM iSeries," is a midrange server from IBM, designed for the business world. TN5250 is a terminal emulator which provides access to an AS/400.

Before buying try the free TN5250 Lite version. 

- Supports all standard 5250 emulation features
- Alternate screen size (24x80 or 27x132)
- SSL/TLS (Secure Socket Layer)
- Zoom and scroll as the Safari browser
- Auto login
- Support for 10 different EBCDIC code pages
- Colors can be customized
- Device name support
- Hotspots

What’s New

Version 4.5

- Faster clipboard paste
- User can define print screen margins

Ratings and Reviews

2.0 out of 5
1 Rating

1 Rating

Beer Geek ,

Broken on Sierra

Worked great for a long time, but this app under MacOS Sierra is not working for me. It simply can’t connect to our server after I upgraded to Sierra. Hopefully they will update it soon, but considering Sierra has been a public beta for 6 months, I don’t think this developer is interested in real support for Mac.

shrinkray ,

Great AS-400 Emulator

I know of no other emulator for AS400 systems so as long as it works, right? You can't go wrong with this one. I started with the Lite version but quickly found out that F-keys do not seem to work, bummer. They totally work on the paid version! Using the terminal app on my work PC is a huge hassle. It's great to know I can do this with my MacBook. The SSL setting does not work with our system.

Our company works in AS400 and will for some time to come. It's great to have this product, I have no problem paying the costs. I just set this up but so far it's performing as expected. Thanks for this app!

MasterH2O ,

The update stinks, crashes all the time!

I can’t even use it anymore. I plan on uninstalling…. If I can’t revert back I will no longer use it.


Jan Frydendal
1.3 MB

OS X 10.9 or later, 64-bit processor



Age Rating
Rated 4+
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