Best Mainframe Apps & Games

MainframePunch

Mid-Century Modern Messaging

Free

Transform your text into animated, retro punch-card videos with authentic hole patterns and sounds. Add custom captions, preview your creations, and share them instantly. All processing is done on your device for maximum privacy.

TN5250 Lite

gives easy access to an AS/400

Free

This app provides access to IBM iSeries (AS/400) midrange servers, acting as a terminal emulator for business applications. It supports various emulation features, secure connections, and multiple barcode scanner options for efficient data entry.

fullmoon: local intelligence

private and local LLM chat

Free

This app provides a private and offline way to interact with local large language models. It runs models directly on your device, optimized for Apple silicon, and is available across multiple Apple platforms. Personalize your experience and integrate with other apps via Shortcuts.

TN3270

gives easy access to a server

$29.99

This application emulates an IBM 3278 terminal, providing straightforward access to IBM Mainframe systems. It offers standard emulation features, secure connections, and customizable display options for efficient mainframe interaction.

IBM HMC Mobile

for Z and LinuxONE

Free

Monitor and manage your IBM Z and LinuxONE systems remotely from your mobile device. Receive alerts for hardware, OS, and status changes. Control partitions and access detailed configuration information securely.

DEC Opcodes

Reference for DEC computers

Free

Explore the instruction sets of legendary DEC computers like the PDP and VAX. This app provides detailed information on each instruction, historical context, and interactive lessons. Discover the machines that shaped modern computing.

Squares Remastered

by Mainframe SAC

Free

A fast-paced puzzle game testing your reflexes. The objective is to change all blue squares to gray within the time limit. It's a simple yet challenging experience designed for quick play sessions.

Julianator

Julian Day of Year Calculator

$0.99

Easily convert dates between the Gregorian calendar and the Julian Day of Year (ordinal date). This tool is useful for systems that use day-of-year numbering, such as mainframes, military, and food industries. It offers a clean interface, monthly views, and widgets for quick access.

ABEND: Meltdown

Abnormal End Puzzle Roguelite

$4.99

Engage in a puzzle roguelite where you play as a rogue AI escaping a government mainframe. Clear rows to attack enemies, chain combos for devastating effects, and collect upgrades to survive escalating dangers across procedurally generated floors. Your choices determine the AI's fate and the narrative's outcome.

Learn Cobol Programming 2024

Learn Cobol

$0.99

Learn the fundamentals of COBOL, a high-level programming language designed for business data processing. Understand its history, features, and importance in various domains like finance and defense. This app provides insights into COBOL's structure and its evolution.

Console Server

by SikYi Chan

Free

Test TCP client or server connectivity with this tool. View incoming and outgoing strings in ASCII or clear text, and send commands back and forth using clear text or hex.