We have received a request from @marcin-82, the package maintainer of qtox and toxcore packages for PCLinuxOS in main/official repository of distribution. You can see them in this package repository mirror.

Here are the instructions the maintainer has provided:

You can install QTox on PCLinuxOS by two ways:
I Synaptic package manager

1. Run Synaptic package manager and click "Refresh" to update
   repository indexes.
2. Search for "qtox" package and mark it for installation.
3. Click "Apply" and confirm installation.
4. Program will be available under "Internet" category in applications menu.

II Terminal

1. Run as root these two commands:
   apt-get update
   apt-get install qtox

I'd like to format apt-get commands similar to BBCode - [code]text[/code] tags.

Here is logo of PCLinxuOS. I have approval/consent from Textar (Bill
Reynolds - owner of PCLinuxOS trademark) to use it:
https://pbs.twimg.com/profile_images/421896334/Aqua.png