source: In April 2000, MINIX became free / open source software under a permissive free software licence, but by this time other operating systems had surpassed its capabilities, and it remained primarily an operating system for students and hobbyists.
target: In April 2000, MINIX became free software but other operating systems had surpassed it and it was mainly used by students and hobbyists.
references: In April 2000, MINIX became free software but other operating systems had surpassed it and it was mainly used by students and hobbyists. In April 2000, MINIX became open source software under a free software license.  By then, other operating systems were bettter and MINIX stayed mainly an operating system for students and hobbyists. MINIX is free software. It's a operating system. Mostly hobbyists and students use it. In April 2000, MINIX became a free software, but operating systems had surpassed its capabilities at this time, so it stayed mostly used by students and hobbyists. MINIX became open source software in April of 2000. By this time, it remained an operating system for hobbyists since others were better. In April 2000, MINIX became a free and open source software under licence.  However,  it was used mostly as an operating system for students and hobbyists, as by this time other operating systems were better. In April 2000 MINIX became free/open source software. But, by this times other operating systems were better, so it wasn't very popular. MNIX was free in 2000, but too late as others has already passed its capabilities. In April 2000 MINIX became free computer programs under a license that allowed it but it was out of date and used for students and those with hobbies. In April 2000, MINIX became free / open source software under a permissive free software licence. By this time other operating systems had surpassed its capabilities, and it remained primarily an operating system for students and hobbyists.