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List highlights commercial companies that use, sponsor, and contribute to open-source projects. List includes a mixture of large businesses, small start-ups, and everything in between. Canonical, Adobe, Black Duck Software, Canonical and WordPress are some of the most prominent companies on the list. Linux founder Linus Torvalds welcomed the corporate influence of open source companies in the community of software development. Some of the companies offer only open source products, while others sell both open and proprietary solutions.