[spohlenz]

Do you have any insight into how many of your customers buy Sidekiq Pro for the extra features, as opposed to for the commercial-friendly license, or simply to help sustain the OSS development?

You've added new features to Sidekiq Pro over time -- do you think your business would have been viable had you started with no (or very few) additional paid features?

[mperham]

Most buy for the features. It's hard for a business to justify giving money to someone for nothing. I'm a big fan of selling something tangible, even if rather minor, rather than just a license. My guess is that I'd have 25% of my current sales if I just sold support/license.

I started Sidekiq Pro with just two major features: batches and metrics. http://www.mikeperham.com/2012/10/01/say-hello-to-sidekiq-pr... The rest have come out of customer feedback and demand.