History
- Initially software was tied to the hardware and free
- Organized collections: SHARE, ACM collected algorithms on tape
- 1970s Academic distribution of Unix in source code form
- 1983: Richard Stallman and the GNU Project
- Late 1980s: X Window System
- 1991: Linus Torvalds and the Linux kernel
- 1998: Netscape releases Mozilla; the Open-Source Movement