Rails中的插件

分页插件will_paginate
http://wiki.github.com/mislav/will_paginate/
Rails分页插件，非常强大，几乎是Rails中最好的分页插件。

Excle插件Spreadsheet
http://github.com/jacobat/ruby-spreadsheet
Excle读入，导出插件

PDF插件prawn
http://github.com/sandal/prawn
Prawn is a PDF writing library for Ruby designed to be tiny, fast, and nimble,just like the majestic sea creature.

报表插件Ruport
http://github.com/ruport/ruport
http://ruportbook.com/
Ruby Reports (Ruport) is an extensible reporting system.
For common tasks, Ruport provides formatters for CSV, HTML, PDF, and text- based reports. However, the real power lies in building custom report controllers and formatters. The base formatting libraries provide a number of helper functions that will let you build complex reports while maintaining a DRY and consistent interface.

缓存插件cache-money
http://github.com/nkallen/cache-money
cache-money是Twitter最近贡献一个缓存插件，和常见的cache plugin不同，它提供的是write-through的缓存模式：在ActiveRecord对象更新的时候不是将缓存中的数据清除，而是直接将更新的内容写入到缓存中去。

Sacffold插件activescaffold
http://github.com/activescaffold/active_scaffold

Phusion passenger
http://www.modrails.com/
Phusion Passenger™ — a.k.a. mod_rails or mod_rack — makes deployment of Ruby web applications, such as those built on the revolutionary Ruby on Rails web framework, a breeze. It follows the usual Ruby on Rails conventions, such as “Don’t-Repeat-Yourself”.

fxri
FXRI is a FXRuby Interface to RI, that supports search-on-typing. FXRI is a small little program, that tries to provide the desired information as fast as possible.

ruote
http://ruote.rubyforge.org/
Ruote is a workflow engine written in Ruby. Ruote is not a state machine library.

QueryReviewer
QueryReviewer is an advanced SQL query analyzer.
http://github.com/boulder/query_reviewer