Other than Microsoft, Stallman calls out "Apple and Adobe, and Oracle and lots of others that make proprietary software and pressure people to use it."

Google "does some good things and some bad," Stallman says. "It has released useful free software such as the WebM codec, and is moving YouTube to distribute that way. However, the new Google Art Project can only be used through proprietary software."

Stallman is also at odds with some people in what is known as the open source community. Open source advocates clearly sprung out of the free software movement, and most open source software also counts as free software. But Stallman says that people who identify as open source advocates tend to view the access to source code as a practical convenience and ignore the ethical principles of software freedom. Various vendors have jumped on the open source bandwagon without embracing the principles that Stallman believes should be at the heart of free software.

"I don't want to make this seem too one-sided," Stallman says. "Certainly a lot of people who hold open source views have worked on useful programs that are free and also some of those companies have funded work on useful programs that are free. So that work is good. But at the same time, at a deeper level, the focus on open source leads people's attention away from the idea that they deserve freedom."

One of Stallman's targets is Linus Torvalds, creator of the Linux kernel and one of the most famous figures in the world of free software.