SmartEdit Writer for Windows is not a widely known or established word processing program. There isn[SQ]t a readily available product with that exact name from major software developers. It[SQ]s possible :

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

Small, specialized companies or individuals might create software with this name, but it wouldn[SQ]t have a broad online presence.
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It[SQ]s a misspelling or slightly different name:

The name might be similar but slightly off, making it hard to find. Try searching for variations or similar-sounding names.
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It[SQ]s an internal or custom application:

Some businesses create internal tools or applications with specific names for their own use; this wouldn[SQ]t be publicly available.

To find information, you[SQ]d need more context, such as:

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Where did you hear about it?

(website, advertisement, etc.)
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What is its purpose?

(what kind of writing does it support?)
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Any other details about the software?

(developer, version number, etc.)

With more information, a more accurate answer can be provided.