Which is the best strategy to promote my software?

Which is the best strategy to promote my software?

"Promotional strategy is designed to inform, persuade, or remind target audiences about those products. The goals of promotion are to create awareness, get people to try products, provide information, keep loyal customers, increase use of a product, identify potential customers, and even teach clients about potential services."

All of the above.... And a lot depends on who your target audience is.

Use product listing websites to list your software. Then focus on link building to rank your product top in the SERP.