IBM i Access Client Solutions is the replacement for IBM Client Access
IBM have never had the knack of choosing snappy simple to remember product names 😉Me
We lived with Client Access for decades but it was always a slightly problematic Windows Installer.
The nice thing about IBM-i ACS is that it is JAVA based, so it can be easily installed on Windows, MAC & Linux devices. The legacy IBM Client Access is no longer supported. IBM Client Access & ACS can both be installed on the same PC and live quite happily next to each other.