Finger: The 1971 Social Network That Never Died
Original: Finger: the 1971 social network that never died
Why This Matters
Finger illustrates how decentralized, user-controlled protocols can outlast centralized platforms by over 50 years.
Finger, a Unix network protocol created in 1971 by Les Earnest at Stanford's AI Lab, is widely regarded as the internet's first social network. Predating modern platforms by decades, it required no accounts, algorithms, or central servers — just a plain text file.
In 1971, Les Earnest, an engineer at Stanford's Artificial Intelligence Laboratory (SAIL), created Finger to solve a simple problem: researchers sharing a time-sharing system called WAITS had no easy way to check who was available. The existing WHO command produced hard-to-read output. Earnest noticed colleagues literally running their fingers down the screen — hence the name. His program returned human-readable info: real names, locations, and terminal idle time. The protocol was formalized in RFC 742 in 1977 by Ken Harrenstien, and the definitive specification, RFC 1288, followed in 1991. Beyond presence info, Finger displayed two plain text files — .plan and .project — from a user's home directory. These became informal microblogs: people filled them with project updates, poems, ASCII art, and personal diaries. The most famous example is John Carmack, co-founder of id Software, who used his .plan as a public development journal for years. The Finger client still ships preinstalled on macOS, most Unix systems, and Windows. Hosts like happynetbox.com make it easy to publish a Finger profile today without owning a server.