Linked from
The 14 pages that link to Richard Stallman, each with the reason it gives.
GNU General Public LicenseRelated: He wrote the first GPL and articulated its underlying freedoms.
GNU ProjectRelated: Stallman announced GNU and shaped its technical goals and ethical principles.
Free softwareRelated: His work gave the movement its name, institutions, and early legal strategy.
EmacsRelated: He began GNU Emacs in 1984 as part of the GNU operating-system project.
Open sourceRelated: His GNU work helped establish a durable model for freely shared software.