While software docs and site are natural first step, in many cases silent routines are poorly documented. As for me they will be plagued by some distribution issues that kill most of portable bundles and if apps you need aren’t included that makes bundle useless overall. Mainstream bulk packages had recently got some press. Portable is on the rise as well and while it lacks installation itself it is as easy to deploy. Nowadays most of software use common third party installers, which mostly come with their own silent switches. This was what I fumbled with in early attempts and frankly I am glad things moved on to the point where we can get benefits of silent installs in simpler ways. Unattended installations go hand in hand with complex obscure deployments tools and whole scripting languages ( AutoIt was originally tool developed for this). Using such types of installation saves many clicks and even more time because you can queue multiply installs instead of waiting for one to finish to start another.

Ccleaner silent install