It seems like you're looking for information on downloading Proxifier, a proxy client for network applications. Based on the text provided, here are some key points:

Windows Versions:

* Version: 2.91

* Date: 2010.02.25

* Operating Systems supported: Windows 2000, XP, 7, Server 2003

+ ProxifierSetup291.exe (856 KB)

+ Proxifier Portable Edition: ProxifierPE291.zip (488 KB)

Mac Version:

* Version: 3.8

* Date: 2023.04.18

* Operating System supported: macOS Big Sur, Monterey, Ventura

Additionally, the text mentions that you can download Python packages for free and easily manage their installation, upgrade, or uninstallation.

If you're looking to download Proxifier 4.12 Full Version for offline installer, I found a reference to it in the provided text:

* Free Download Proxifier 4.12 Full Version - Latest Offline Installer

To use this version, you can follow these steps:

1. Type the proxy server's MAC address.

2. Keep other options as default settings.

Please let me know if you need further assistance or have any specific questions!

Proxifier 4.12 for mac download