Rails useful plugins & gems

Files Upload
http://github.com/thoughtbot/paperclip

http://github.com/technoweenie/attachment_fu

Rails Authentication

http://github.com/binarylogic/authlogic

http://github.com/technoweenie/restful-authentication

Searching

http://github.com/freelancing-god/thinking-sphinx

http://github.com/jkraemer/acts_as_ferret

Admin Interfaces

http://github.com/activescaffold/active_scaffold

http://github.com/fesplugas/typus

Tagging

http://github.com/mbleigh/acts-as-taggable-on

Scheduling

http://github.com/javan/whenever

Pagination

http://github.com/mislav/will_paginate

http://github.com/mexpolk/flow_pagination (twitter like pagination)

Rating

http://github.com/edgarjs/ajaxful-rating

http://github.com/azabaj/acts_as_rateable

Calendars

http://github.com/elevation/event_calendar

http://github.com/topfunky/calendar_helper

Captcha

http://github.com/ambethia/recaptcha

Permalink Generation

http://github.com/norman/friendly_id

http://github.com/technoweenie/permalink_fu

Image Processing

http://github.com/probablycorey/mini_magick

http://github.com/seattlerb/image_science

Graphs

http://github.com/pullmonkey/open_flash_chart

Content Management System (CMS)

http://github.com/radiant/radiant

http://github.com/fdv/typo



Any comments/feedback's/suggestions appreciate...!!!