Nagios Web Interface,Frontend or GUI Tools
Nagios PHP
Nagios PHP is an alternative PHP Web interface for Nagios, written using SMARTY as its template engine.
Downloads and Documentation
http://nagios-php.sourceforge.net/
Oreon
The objective of this project is to purpose a new frontend to Nagios, and add a panel of new functionalities.
Downloads and Documentation
http://www.oreon-project.org/
Nagios Config
Nagios Config is a Web-based front end for configuring Nagios 1.x.
Downloads and Documentation
http://nagiosconfig.com/
Fruity
Fruity is a PHP based web-frontend to your Nagios configuration. It support handling Nagios 2.x configurations and it can import your old Nagios 1.x configurations. It also supports Nagios templates and makes them even more powerful.
Downloads and Documentation
http://fruity.sourceforge.net/
NaWui
NaWui stands for Nagios Administration Web User Interface.It is a Web frontend written in PHP to manage Nagios configurations and Database records. Database connectivity is supported using plugins, which simplifies the way records are stored.
Downloads and Documentation
http://www.stigma.dyndns.org/NaWui
Nagmin
NagMIN is a enterprise class Network Monitoring System, Powered by Nagios, WebMIN, RRDtool, Nmap, Fping, Net::SNMP, Syslog-NG and other open source software providing web-based administration, and enhanced web portal to help you manage your network.
Downloads and Documentation
http://nagmin.sourceforge.net/
Nagat
Nagat, or Nagios Administration Tool, is a webbased solution written in PHP for configuring Nagios, a host and service monitor.
Downloads and Documentation
http://nagat.sourceforge.net/
Nagios Web Config
A PHP/MySQL based front-end for Nagios 2.x setup. Complete with the ability to add/remove hosts, hostgroups, contacts, contactgroups, services, timeperiods and commands
Downloads and Documentation
http://sourceforge.net/projects/nagiosweb/
NagEdit
PHP & mySQL based tool to creat config Files for Nagios. No further need to create config files by hand, just use this Web Front End.
Downloads and Documentation
http://sourceforge.net/projects/nagedit
NagiosQL
NagiosQL is a web based administration tool for Nagios 2.x. It helps you to easily build a complex configuration with all options, manage and use them. NagiosQL is based on a webserver with PHP, MySQL and file access to the Nagios configuration files.
Downloads and Documentation
http://www.nagiosql.org/
nag2web
A PHP/MySQL web front-end for Nagios 2.x setup. With the ability to add/remove/edit the config items. The web front-end for NAGIOS has the ability to test the config. We want to build a simple possibility to find and show all the features in NAGIOS.
Downloads and Documentation
http://nag2web.de/
gng
Gng (Gnome Nagios Gui) can display host, parent link, icon, hostgroup map, user map, rectangle, line and text info.
Downloads and Documentation
http://gng.sourceforge.net/
If you want more check these links
http://www.nagiosexchange.org/Frontends.37.0.html
http://www.nagiosexchange.org/Configuration.40.0.html