AS400 Client Access vs IBM i ACS

  • Home
  • /
  • Blog
  • /
  • AS400 Client Access vs IBM i ACS

April 3, 2025

Who would win in a fight between AS400 Client Access and IBM i ACS?

In a hypothetical showdown between IBM Client Access (the legacy AS400 version) and IBM i Access Client Solutions (ACS), it’s less a fight and more a generational beatdown – ACS would come out on top, hands down. IMHO of course. Think of AS/400 Client Access as a grizzled veteran: tough for its time, with its 5250 emulation and file transfer chops, but weighed down by its clunky Windows-only baggage and outdated tech. It’s like it’s swinging a floppy disk in a world of cloud punches.

IBM i ACS, the sleek, modern contender, rolls in with Java-powered agility, cross-platform moves (Windows, macOS, Linux), and a beefed-up arsenal, better security, integrated SQL tools, and a lightweight setup that doesn’t need a PhD to install.

AS/400 Client Access might land a nostalgic jab or two, but ACS dodges with efficiency and finishes it with a future-proof uppercut. The old-timer’s heart is in the right place, but it’s no match for the new kid’s speed and versatility.

Winner: IBM i ACS, by a knockout

But don’t let me just tell you – I can go one step further and show you!

Buckle up, because we’re taking a wild ride back to the days of floppy disks and dial-up vibes with the OG IBM Client Access, the pre-ACS hero of AS/400, iSeries, and IBM i connectivity. Perfect for those brave souls still rocking a Windows XP vibe or just wanting to flex some retro IT skills, this session will walk you through digging up those ancient install files and slapping them onto your system like it’s 1999.

Get ready to laugh at the quirks and conquer the setup, let’s resurrect this dinosaur with a grin!

AS400 Client Access vs IBM i ACS 1

Hunting FOR Client Access DinosaurS

NickLitten


IBM i Software Developer, Digital Dad, AS400 Anarchist, RPG Modernizer, Shameless Trekkie, Belligerent Nerd, Englishman Abroad and Passionate Eater of Cheese and Biscuits.

Nick Litten Dot Com is a mixture of blog posts that can be sometimes serious, frequently playful and probably down-right pointless all in the space of a day.

Enjoy your stay, feel free to comment and remember: If at first you don't succeed then skydiving probably isn't a hobby you should look into.

Nick Litten

related posts:

{"email":"Email address invalid","url":"Website address invalid","required":"Required field missing"}

Subscribe NOW
7-day free trial

Take This Course with ALL ACCESS

Unlock your Learning Potential with instant access to every course and all new courses as they are released.
 [ For Serious Software Developers only ]

Online Learning for IBM i Software Technology Professionals

“The more that you read, the more things you will know. The more that you learn, the more places you’ll go.” – Dr. Seuss

>