Z:gnu-www-ja-open-source-misses-the-point--f6b1b7-In practice, open source stand/en

In practice, open source stands for criteria a little weaker than those of free software. As far as we know, all existing free software would qualify as open source. Nearly all open source software is free software, but there are exceptions. First, some open source licenses are too restrictive, so they do not qualify as free licenses. Fortunately, few programs use those licenses.