Downloading BizUnit 4.0.154.0 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. This free program is an intellectual property of Kevin B Smith.
The following versions: 4.0, 3.1 and 3.0 are the most frequently downloaded ones by the program users. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The program lies within Development Tools, more precisely IDE.
From the developer:
BizUnit enables automated tests to be rapidly developed. BizUnit is a flexible and extensible declarative test framework targeted that rapidly enables the automated testing of distributed systems, for example it is widely used to test BizTalk solutions. BizUnit is fully extensible.
You may want to check out more software, such as BizUnit Designer, which might be similar to BizUnit.