There was a download of PySide 1.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The software relates to Development Tools.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The most popular version among the program users is 1.0. This free program was originally created by PySide Team.
From the developer:
PySide is an open source sofware project providing Python bindings for the Qt framework. Qt is a cross-platform application and UI framework, allowing the developers to write applications once and deploy them across many operating systems without rewriting the source code, while Python is a modern, dynamic programming language with a vivid developer community.
You may want to check out more software, such as YubiKey NEO Manager, which might be similar to PySide.