If you know what companies might be interested in your software, you can contact their representatives by phone, one by one. You can even hire an entire team of talented business development and corporate sales managers to do this. The best option, however, would be to send journalists a press release dedicated to the launch of your product and see clients knocking on your door shortly thereafter.
Depending on the type of your product, a press release can be sent to publications of SEVERAL relevant topics.
The result of each PR distribution is a report with detailed statistics on the geography of its recipients, message delivery statuses and links to available publications.
Press release distribution: $140