Nuxeo CEO Éric Barroca has an excellent post that breaks down the hype and decodes the marketing speak around commercial open source software. He doesn't name names but he does call out some of the claims and language of some commercial open source vendors. The general message is this: software vendors should focus on making great products and be clear and direct about what they are selling. There is nothing wrong with selling proprietary software or charging license fees — just be clear about it. Don't call a license fee something else to give the appearance that the software is free. Éric also gives a lot of credit to commercial software vendors that contribute to open source (like Atlassian, Day, and IBM) without making a big deal about it.