| 1 | 1,879 | 4,873 | extlib | Support library for Merb |
| 2 | 3,084 | 4,435 | moped | A MongoDB driver for Ruby. |
| 3 | 8,247 | 9,512 | datamapper | Faster, Better, Simpler. |
| 4 | 15,917 | 17,234 | akephalos | Headless Browser for Integration Testing with Capybara |
| 5 | 42,609 | 55,182 | rails_datamapper | Rails Plugin for DataMapper |
| 6 | 54,938 | 55,182 | tiff | Ruby wrapper for libtiff with FFI |
| 7 | 68,973 | 87,723 | mail_builder | MailBuilder is a simple library for building RFC compliant MIME emails. |
| 8 | 70,046 | 87,723 | haml-server | Server for HAML files |
| 9 | 94,576 | 87,723 | testdrive | TestDrive is a simple ruby and jruby compatible automatic test runner. |
| 10 | 123,311 | 87,723 | harbor | Harbor Framework |
| 11 | 132,477 | 87,723 | uninhibited | This rubygem does not have a description or summary. |
| 12 | 135,045 | 87,723 | ttf2eot | Convert TTF fonts to EOT fonts |
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