Strovent Systems
Greenscreen 3270

A modern TN3270 terminal emulator for iOS, on iPhone and iPad

Greenscreen 3270 is built for real work at the 3270 screen: hardware-keyboard first, touch-friendly, encrypted, and ready for multiple host sessions.

Customer inquiry screen in Greenscreen 3270
Features

Everything a 3270 user expects

Hardware keyboard first

F1–F12 send PF1–PF12, Shift+F-keys send PF13–24, Esc resets. Remap any key.

On-screen 3270 keys

A scrolling bar of Reset, Clear, Enter, PA1–3, F1–F24 and more, plus an optional bar for keyboards without F-keys.

Tappable key labels

Legends like “F3=Exit” or “PF8=Fwd” on the host screen become buttons.

TLS and TN3270E

Encrypted connections, LU and device names, models 2–5 up to 27×132, and many EBCDIC code pages.

Multiple sessions

Switch with Ctrl+Tab or Ctrl+Alt+1–9. Sessions stay connected in the background on iPadOS 26.

Logon scripts

Record or write scripts that wait for screen text, type and press keys. Passwords are asked for each time.

Always fits

Crisp, pixel-aligned text in any orientation, Split View and Stage Manager. Pinch to zoom.

Field-aware copy and paste

Rectangular selection, and paste that skips protected fields.

Built-in demo host

Try everything offline with the included practice system. No mainframe needed.

Screens

See it in action

Deploying to a team?

Greenscreen 3270 Enterprise adds company sign-in and central management.