| 100% | USENET | 6 | System that popularized ''FAQ'' |
| 55% | USENET | 6 | Early online forum that popularized terms like "FAQ" and "spam" |
| 54% | SPRINKLER | 9 | System that waters lawn |
| 54% | JOBROTATION | 11 | System that varies tasks* |
| 54% | OLFACTORY | 9 | System that controls smell |
| 53% | LAN | 3 | System that connects computers: Abbr. |
| 53% | SPRINKLER | 9 | System that waters plants automatically |
| 53% | TSARISM | 7 | System that collapsed in 1917 |
| 53% | TSARISM | 7 | System that ended in 1917 |
| 51% | DRAINAGE | 8 | System that allows water to disperse |
| 51% | NERVOUS | 7 | System that coordinates body's actions |
| 51% | FILTER | 6 | System that removes impurities from water |
| 51% | AUTOPILOT | 9 | System that helps control the aircraft |
| 51% | STEREO | 6 | System that might include a turntable |
| 50% | AUTOPILOT | 9 | System that helps someone fly a plane |
| 50% | SERVICE | 7 | System that supplies a need like utilities |
| 50% | ENDOCRINE | 9 | System that deals with hormones and glands |
| 50% | MTV | 3 | Channel that popularized video jockeys |
| 50% | DIGESTIVE | 9 | Bodily system that processes food |
| 50% | RADAR | 5 | Aircraft-tracking system that "blips" |
| 49% | FLEXTIME | 8 | System that lets employees set their own hours |
| 49% | AWD | 3 | System that uses four tires at once (abbr.) |
| 49% | AUTOPILOT | 9 | System that allows a plane to fly itself |
| 49% | HTTP | 4 | System that enables online data exchange, for short |
| 49% | STAX | 4 | Record label that popularized Southern soul |
| 49% | TIVO | 4 | DVR system that offers recording option |
| 49% | RADAR | 5 | Airplane tracking system that registers "blips" |
| 49% | YOGA | 4 | Exercise system that originated in India |
| 49% | VISTA | 5 | Operating system that succeeded Windows XP |
| 49% | WII | 3 | Game system that responds to gestures |