I want to go for a volunteer trip to south-east Asian countries or Africa. Although I found a website called STAtravel. I am looking for some more pointers for a lesser price. As far as skills are concerned, I am software and electrical engineer and a flute player with English knowledge and I can teach yoga too.
Volunteer HQ is a reputable company. Their program fees are also cheaper than STA's.
If you're traveling for a few months, Try VSO. They're looking for professionals and will even pay a living allowance and other costs.
DIVOG (Disaster Volunteers of Ghana) seems to have some good volunteer programs in Ghana.
I have not personally travelled with DIVOG, but I found this site through a photographer that took his family on one of the family volunteer programs with them. A blog entry of photos from his trip is here: http://marksolonfstop.com/2013/01/05/dzolo-gbogame-ghana/
I don't think his site mentions DIVOG, but in a Facebook post the author of the blog said that DIVOG was the organization that they worked with for their trip, and that they took great care of them.