Awesome

RPi GPIO Web Control Panel

This is a simple and light web control panel for manipulating GPIO ports in Raspberry Pi.

RPi GPIO Web Control Panel ver. 1.0

It is based on:

bcm2835 library - used for GPIO access (http://www.open.com.au/mikem/bcm2835/, GPLv2 license)
KoanLogic Srl KLone - as a web server (http://www.koanlogic.com/klone/, Simplified BSD license)
jQuery library - used for HTML DOM manipulation and animations (http://jquery.com/, MIT License)

Simple HTML/CSS without any graphic files.
You can define which of GPIO ports you want to use as an input and which as an output.
Main page displays current status for all defined GPIO ports.
You can change value for GPIO defined as output simply by click on its label.

Give your Raspberry Pi access to the Internet.
Download and install bcm2835 library from http://www.open.com.au/mikem/bcm2835/, make sure it is working!
Read about pin numbering in bcm2835 library and something about KLone web server.
Download RPi GPIO Web Control Panel in zip archive, extract it.
Change declaration for GPIO ports in lib/rpigpiowebcp.c file (gpio_outs[] and gpio_ins[] arrays) or use default values.
Refer to KLone config file in webapp/etc/kloned.conf.
Run make and wait...
If everything went well run sudo ./kloned -F (this command will run KLone daemon in foreground mode) and go to your Raspberry Pi IP address in your browser.
CTRL+C to stop KLone daemon.

Multi languages support (now only Polish).
Access only for authorized users (login form, sessions).
Change working mode from cyclic "polling" server for data to "push" data from server to browser.
Change GPIO ports definition during operation and store settings in external file/files.
Support for other GPIO manipulating libraries or make own.
SPI, I2C, UART support.