Definitely! I am a big fan myself of Kiva and charity:water. Just saying that a lot of (tech) people have different perceptions of how exactly technology can make an impact. Unfortunately the scale between charity and money driven startups is not exactly well balanced. So lets not praise ourselves too much..

Things like Kiva and charity:water do their work in the same systems as the employees of companies do, so while they do things to help others I wouldn't exactly say they are changing the world. It's more like they propagate the world they live in to others, which has its upsides and downsides.