| 1 | 3,799 | 3,900 | cantor | Fast implementation of finite and complement sets in Ruby |
| 2 | 4,455 | 4,183 | stupidedi | Ruby API for parsing and generating ASC X12 EDI transactions |
| 3 | 36,512 | 105,271 | xmlparsable | Simple declarative XML parsing |
| 4 | 38,576 | 25,076 | piggly | PostgreSQL PL/pgSQL stored procedure code coverage |
| 5 | 128,041 | 105,271 | fr | Examples of immutable data structures and functional programming in Ruby |
| 6 | 135,339 | 54,830 | propr | Property-based testing for Ruby (ala QuickCheck) |
| 7 | 170,825 | 105,271 | forall | Ruby generative property test library (ala QuickCheck) |