There[SQ]s no known widely used software or application called "Irri for Windows." It[SQ]s possible :

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The name is misspelled or slightly different:

Try searching for variations of the name, or check if there[SQ]s a specific context where you encountered this term (e.g., a forum, document).
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It[SQ]s a very niche or obscure program:

Some specialized software is only used within particular industries or research groups and isn[SQ]t readily discoverable through general searches.
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It[SQ]s a typo or misunderstanding:

Double-check the source where you saw this name.

If you can provide more context about where you encountered "Irri for Windows," I might be able to give you a more accurate answer.