| 1 | 20,666 | 14,933 | geometry | Geometric primitives and algorithms for Ruby |
| 2 | 50,522 | 32,863 | engineering | Tools for Mad Engineers and those who want to be |
| 3 | 52,809 | 32,863 | jsgf | A parser and DSL for JSGF files |
| 4 | 60,258 | 42,408 | dxf | Read and write DXF files using Ruby |
| 5 | 60,905 | 32,863 | audio | Access all of your audio devices from the comfort of Ruby |
| 6 | 91,522 | 59,583 | fasteners | Models for Nuts, Bolts, and Screws |
| 7 | 91,712 | 93,116 | stl | Read and write STL files |
| 8 | 97,855 | 93,116 | eaglecad | Everything you need to bend Eagle CAD projects to your will |
| 9 | 102,425 | 93,116 | gerber | Tools for working with Gerber and Extended Gerber files |
| 10 | 115,447 | 42,408 | optical | The home of all ruby optics |
| 11 | 116,384 | 93,116 | clips | The C Language Integrated Production System (CLIPS), but in Ruby |
| 12 | 121,557 | 59,583 | canvas | Fingerpainting in Ruby, without the fingers, or the paint |
| 13 | 138,692 | 93,116 | fritzing | Read and write Fritzing sketches |
| 14 | 139,193 | 93,116 | manufacturing | Tools for generating manufacturing drawings and related files |
| 15 | 155,238 | 42,408 | speech | Adventures in the Land of Speech Recognition |
xmisao