The registration programs of Gifu Challenge 2005 (2005.10.06)
| Program | Author(s) |
| martha | UJIIE Ichiro |
| KCC Igo | KCC Igo development team |
| Shikou Sakugo | TAJIMA Morihiko |
| JayGurudev | Vineet Paliwal |
| Nanashi | MURAYAMA Masaki |
| AYA | YAMASHITA Hiroshi |
| Daigosan | NAKAO Koichi |
| GNU Go | GNU Go team |
| Go Intellect | Ken Chen |
| GoStar | Lu Jinqiang |
| Katsunari | SEI Shin-ichi |
| The Many Faces of Go | David Fotland |
| IGOPPI | ARIYOSHI Kazuhiko |
| GOGATAKI | KUDOMI Shigetaka |
| caren | KOBAYASHI Katsumi |
| GORIMUCHU | NAGAYOSHI Hiroyuki |
| GoWind | Ruhai Zhou |
| Kinoa Igo | Kinoa |
| TSGO.v13.1 | I.J.Tonkes |