Sanity's Edge – A voice BBS from 1994

Sanity's Edge was a voice-based bulletin board system that operated from 1994 to 1997 in Tampa, Florida, allowing users to call a phone number and interact entirely through keypad input and audio prompts rather than a computer modem. The system was created by a father-son team—the father serving as sysop "Dr. Null" and his ten-year-old son "Xela" (Alex backwards) contributing significantly to the programming—and has been preserved online with multiple interactive versions including the original 1994 recreation and a modern trivia game remake.