Entrepreneurs have always had a history of giving back to society and other entrepreneurs. Step into any public library in America and there’s a good chance it was initiated by the entrepreneur Andrew Carnegie (2,509 libraries). Step into the Georgia Aquarium, the largest in the world, and know that it came from a $250 million donation via Bernie Marcus, the cofounder of Home Depot. Step into an entrepreneurship program and there’s a good chance it is from or influenced by the Kauffman Foundation, a multi-billion dollar foundation dedicated to fostering entrepreneurship.

With more societal focus on social entrepreneurship, initiatives like the Giving Pledge where billionaires give away at least half their fortune, and more focus on small businesses as the net new job creators in the country, we’re going to see even more entrepreneurs giving back to help others, especially other entrepreneurs.

Here are some examples…