jalaliCalender 1.0 could be downloaded from 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 Home & Hobby Tools. We recommend checking the downloaded files with any free antivirus. The most popular version among jalaliCalender users is 1.0. This free software was originally designed by Homam Hosseini.
From the developer:
Although Jalali is a solar calendar with strict rules, it has always been a challenge for programmers to provide some means of conversions for it and the Gregorian calendar. Jalali calendar is based on the actual observation of the sun, other than established mathematical principals.
You may want to check out more software, such as MB Free Enneagram Software, which might be similar to jalaliCalender.