There are more than enough published algorithms in the last 10-20 years, but the open source model doesn't attract contributors to implement them. It takes rela

There are more than enough published algorithms in the last 10-20 years, but the open source model doesn't attract contributors to implement them. It takes relatively difficult, intricate work in a niche area. It's not the Linux kernel, or an AI startup. It's very good that someone mentioned yed (from yWorks) here. Tom Sawyer Software is also a terrific example of what's possible. Software like that takes a large sustained effort.