Paying a monthly subscription just to emulate a 1970s green-screen terminal is absurd. So I built my own. Meet X3270: A free, native macOS TN3270/TN3270E emulator.

Built from scratch in pure C++ and Cocoa. No Java. No X11. No Electron bloat. It has implicit TLS 1.2+ via OpenSSL and full ISPF Query Reply support.

Free and open-source forever. Read the architecture breakdown on my blog: https://www.dockerr.blog/blog/modern-free-TN3270-terminal-client-for-mac-free

#cpp #opensource #mainframe #zOS #macOS #COBOL #FOSS #softwareengineering

🤖 AI is accelerating mainframe modernization in 2026.

Enterprises are using AI-powered tools to modernize COBOL applications, automate workflows, improve z/OS monitoring, and enable faster DevOps transformation.

✔ AI-Driven Automation
✔ COBOL Modernization
✔ Intelligent z/OS Monitoring
✔ Faster Enterprise Transformation

👉 [www.vrnexgen1.com](http://www.vrnexgen1.com)

#AiMainframeModernization #COBOL #zOS #DevOps #Automation #VRNexGen

Are you paying for mainframe software nobody uses?

Many enterprises carry unused or obsolete software that still consumes budget and MSU capacity.

With Z Asset Optimizer, you gain visibility to identify unused assets, reduce license costs, and plan modernization more effectively.

Start with clarity before you modernize.
👉https://vrnexgen1.com/blog/z-asset-optimizer-mainframe-cost-reduction/

#Mainframe #ZAssetOptimizer #CostOptimization #DigitalTransformation #zOS #EnterpriseIT

Mainframes power the enterprise.
But do you know who ensures they stay secure, optimized, and ready for modernization?

We’ve published an executive guide on the strategic role of the z/OS system programmer.

Inside:
• responsibilities
• performance management
• compliance
• hybrid integration

Download the free guide:
👉 https://medium.com/@vrnexgentechnologies/z-os-system-programmer-role-responsibilities-skills-ef60a228c253

#Mainframe #IBMZ #zOS #EnterpriseIT #ITLeadership

Shift COBOL Batch nach IBM zIIP
💰 Gigantische Kosteneinsparungen
🪄 Optimieren Sie 80% Ihrer CP-Workload
💯 KEINE Änderungen am Quellcode
🥇 55+ Jahre Mainframe-Erfahrung

Tauchen Sie tiefer ein in meinem Artikel (Deutsch):
https://bit.ly/4nZXwQc
#cobol #mainframe #zos #batch

With some help from the SZE community, I can now log my service uptime and latency in #Db2 using #Golang !

I've got a service called CompInvZ which links into my Db2Z host to find services, then it periodically tries to connect and records the result back to DB2

A friend of mine took it a step further and is using #ISPF to interact with Db2 via #REXX

That means #CICS is next on the list, thanks #Walmart !
https://github.com/walmartlabs/zECS

#Mainframe #IBM #ZOS #programming #COBOL #HLASM

OpenTelemetryによるz/OS上でのCICSトランザクションのトレーシング
https://qiita.com/gomachoco/items/d872ef3a1fb590b62155?utm_campaign=popular_items&utm_medium=feed&utm_source=popular_items

#qiita #zOS #CICS #opentelemetry #zOSConect

Shift COBOL batch programs to IBM zIIP
💰 Gigantic cost savings
🪄 Optimize 80% of your CP workload
💯 NO Source Code changes
🥇 55+ years mainframe expertise

Dive deeper in my new article: https://bit.ly/43yNYEt
#cobol #mainframe #zos #batch #offload #optimization

Python for z/OS についてのメモ
https://qiita.com/tomotagwork/items/09940b8f4ce7ce7697fe?utm_campaign=popular_items&utm_medium=feed&utm_source=popular_items

#qiita #Python #メインフレーム #zOS