Redmine is a flexible project management web application written using Ruby on Rails framework.

Redmine Features (from Redmine website)

• Multiple projects support
• Flexible role based access control.
• Flexible issue tracking system
• Gantt chart and calendar
• News, documents & files management
• Feeds & email notifications.
• Per project wiki
• Per project forums
• Simple time tracking functionality
• Custom fields for issues, projects and users
• SCM integration (SVN, CVS, Git, Mercurial, Bazaar and Darcs)
• Multiple LDAP authentication support
• User self-registration support
• Multilanguage support
• Multiple databases support

Installnation
1. Install Ruby , RubyGems , and Rails

sudo apt-get install ruby1.8
wget http://rubyforge.org/frs/download.php/45906/rubygems-1.3.1.zip
unzip rubygems-1.3.1.zip
cd rubygems-1.3.1/
ruby setup.rb
gem1.8 install rails

2. Download Redmine [Click] and extract it

3. Setup database ( I use mysql-server-5.0) create database redmine

create database redmine character set utf8;

4. In config directory copy database.yml.example to database.yml and open it in text editor and configure your database settings for “production”
This is example for mysql

production:
  adapter: mysql
  database: redmine
  host: localhost
  username: bduser
  password: bdpasswd

5. Create database structure

rake db:migrate RAILS_ENV="production"

NOTE: if you fond an error No such file or directory – /tmp/mysql.sock
insert this line in database.yml

production:
  adapter: mysql
  socket: /var/run//mysqld/mysqld.sock
  database: redmine
  host: localhost
  username: bduser
  password: bdpasswd

6. Insert default configuration data in database

rake redmine:load_default_data RAILS_ENV="production"

7. Setting up permissions

sudo chmod -R 755 files log tmp

8. Run webserver and Enjoy

ruby script/server -e production