You could have downloaded Irritools 2.0 from our software library for free. The latest version of the program is supported on PCs running Windows XP/7/8/10/11, 32-bit. This free program is an intellectual property of Irritools.com. The following versions: 2.0 and 1.0 were the most frequently downloaded ones by the program users. The common filename for the program's installer is Irritools.exe. The software is included in System Utilities.
From the developer:
Irritools is a free-to-use application useful for the hydraulic proportioning of the various elements constituting a modern microirrigation installation.
You may want to check out more software, such as Snappy Fax 2000, which might be similar to Irritools.