| 1 | 1,781 | 4,362 | extlib | Support library for Merb |
| 2 | 2,962 | 5,079 | moped | A MongoDB driver for Ruby. |
| 3 | 7,986 | 10,897 | datamapper | Faster, Better, Simpler. |
| 4 | 15,253 | 23,383 | akephalos | Headless Browser for Integration Testing with Capybara |
| 5 | 41,563 | 33,749 | rails_datamapper | Rails Plugin for DataMapper |
| 6 | 53,892 | 26,887 | tiff | Ruby wrapper for libtiff with FFI |
| 7 | 67,170 | 60,162 | mail_builder | MailBuilder is a simple library for building RFC compliant MIME emails. |
| 8 | 68,300 | 33,749 | haml-server | Server for HAML files |
| 9 | 92,768 | 60,162 | testdrive | TestDrive is a simple ruby and jruby compatible automatic test runner. |
| 10 | 121,080 | 98,986 | harbor | Harbor Framework |
| 11 | 129,483 | 141,213 | uninhibited | This rubygem does not have a description or summary. |
| 12 | 132,662 | 74,401 | ttf2eot | Convert TTF fonts to EOT fonts |
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