Published at LXer:

Open source advocate David Skoll launched Roaring Penguin Software in 1999 because he was restless in his job as R&D project leader at Chipworks, Inc. Roaring Penguin started strictly as a consultancy, but the next year, after Skoll was commissioned to create software to help London's Royal College of Physicians stem the tide of email viruses and spam to its servers, he decided the world needed a better email filter. Skoll wrote the now ubiquitous MIMEDefang email filter, released it to the community, and proceeded to build a successful business on top of GPL software.

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