We're currently doing it and the long-term plan is to get featured in as many B2B marketplaces as possible. There are many by the way. Submissions are straightforward for some while requires engineering help for many others. There's not a lot co-marketing that you can expect from enterprises, though they won't stop you from doing whatever marketing you want to do. However, smaller companies are usually more open for co-marketing.
It's still early stages for us and apart from backlinks, we haven't seen much, but plan is to continue and evaluate the efforts in a 3-6 months period.