NetShade is not a widely known or commonly used application for Mac. There[SQ]s no established software with that name that[SQ]s readily available through major app stores or repositories. It[SQ]s possible :

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It[SQ]s a very niche or obscure application:

Perhaps it[SQ]s a specialized tool used within a specific company or industry.
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It[SQ]s a misspelling:

You might be thinking of a similar-sounding program. Could you be thinking of another name?
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It[SQ]s a recently developed or unreleased application:

Newer software may not yet have widespread recognition.
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It[SQ]s malware or a potentially unwanted program (PUP):

Be cautious if you encountered this name in an untrusted source.

If you encountered "NetShade" in a specific context (like a website, an email, or a downloaded file), providing more details will help determine what it is.