| 1 | 1,720 | 3,656 | extlib | Support library for Merb |
| 2 | 2,900 | 5,317 | moped | A MongoDB driver for Ruby. |
| 3 | 7,841 | 12,501 | datamapper | Faster, Better, Simpler. |
| 4 | 15,029 | 17,237 | akephalos | Headless Browser for Integration Testing with Capybara |
| 5 | 41,466 | 38,770 | rails_datamapper | Rails Plugin for DataMapper |
| 6 | 55,093 | 23,819 | tiff | Ruby wrapper for libtiff with FFI |
| 7 | 66,806 | 112,619 | mail_builder | MailBuilder is a simple library for building RFC compliant MIME emails. |
| 8 | 68,062 | 61,102 | haml-server | Server for HAML files |
| 9 | 92,560 | 71,921 | testdrive | TestDrive is a simple ruby and jruby compatible automatic test runner. |
| 10 | 121,060 | 131,109 | harbor | Harbor Framework |
| 11 | 128,774 | 131,109 | uninhibited | This rubygem does not have a description or summary. |
| 12 | 133,249 | 78,816 | ttf2eot | Convert TTF fonts to EOT fonts |
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