Kactus2 2.8.49 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free software was originally produced by TUT.
The following versions: 2.8 and 2.4 are the most frequently downloaded ones by the program users. We recommend checking the downloaded files with any free antivirus. The Kactus2 installer is commonly called Kactus2.exe. The program lies within Development Tools, more precisely IDE.
From the developer:
Kactus2 is the first graphical open source IP-XACT toolset to design embedded products, especially FPGA-based MP-SoCs. It provides easier IP reusabilility and practical HW/SW abstraction for easier application SW development. You can create "electronic datasheets" of your existing IPs to simplify integration, create system designs that map SW to HW, create HW designs with hierarchy, and more.
You may want to check out more software, such as Greatis Form Designer.Net, ecGraph or newObjects Active Local Pages, which might be related to Kactus2.