For this lovely month of August, we have chosen WhyIslam as our charity of the month.
"Invite to the way of your Lord with wisdom and good instruction" [16:125]. Da'wah is an important part of our religion and WhyIslam embodies a beautiful way of making da'wah. Their site is comprehensive and informative, and user friendly too.
They also set up booths in various cities and countries to disseminate knowledge, put up billboards on Islam, and generally portray a great example of Islam and Muslims.