This list that I've compiled is a work in progress. Please contact me if you know of more, wonderful, human rights-oriented organizations that should be added to this list!
http://www.wfp.org/ The World Food Programme is "the world's largest humanitarian agency fighting hunger" and 20 children can be fed on one $5 donation.
http://www.4everygirl.com/ "Campaigning for media images that value, respect, empower and promote the true value of every girl!" This group seeks to make positive changes in how girls and women are portrayed by the media.
http://www.girlup.org/ via the United Nations Foundation "Uniting girls to change the world ... Girl Up envisions a world where all girls, no matter where they live, have the opportunity to become educated, healthy, safe, counted and positioned to be the next generation of leaders."
http://www.amightygirl.com/ "The world's largest collection of books, toys and movies for smart, confident, and courageous girls."
http://stand.org/ "Stand for Children is an education advocacy organization devoted to improving public schools and closing the achievement gap."
http://www.smiletrain.org/ "The world's largest cleft charity where a simple 45 minute surgery that costs as little as $250, can change a child's life FOREVER."
http://fairtradeusa.org/ "We help farmers in developing countries build sustainable businesses that positively influence their communities. We're a nonprofit, but we don't do charity. Instead, we teach disadvantaged communities how to use the free market to their advantage. With Fair Trade USA, the money you spend on day-to-day goods can improve an entire community’s day-to-day lives." Certified Fair Trade products (like chocolate) help prevent the use of slave labor as well.
http://www.credomobile.com/mission/Progressive-Social-Change.aspx CREDO cell phone company runs off Sprint cell towers, offering great coverage, great phones, great prices, AND reimburses you up to $350 per line when you switch over from a different company. Most importantly, they make BIG donations with our money to important organizations like Clean Water Fund, Ocean Conservancy, Mercy Corps, Women for Women International, Planned Parenthood, and many more. See my blog on why I love this company so much here!