| y0(3) - (version 1) |
| y1(3) - (version 1) |
| yacc(1) - (version 2) |
| Yahoo - (version 1) |
| YahooMessenger - (version 1) |
| YAML - (version 4) |
| YaMumCall - (version 3) |
| ybmtopbm(1) - (version 1) |
| YellowDog - (version 2) |
| YellowEyedPenguin - (version 4) |
| yes(1) - (version 2) |
| YHBT - (version 3) |
| YMMV - (version 4) |
| yn(3) - (version 1) |
| Yoper - (version 13) |
| YorkStreet - (version 3) |
| YouCanNeverPreviewEnoughTimes - (version 2) |
| YourLinuxDistributionOfChoice - (version 3) |
| YourMileageMayVary - (version 3) |
| YourMum - (version 6) |
| Yum - (version 7) |
| yuvsplittoppm(1) - (version 1) |
| yuvtoppm(1) - (version 2) |
| YuWei - (version 1) |