Hurricane Harvey has produced a lot of asshole behavior so far, largely from people who aren’t being directly affected by the massive, deadly storm. But for every snitching reporter, door-slamming preacher, or pardon-happy president, there are hundreds of people helping victims as the flooding continues, providing some small measure of a reminder of the good a community—even, shockingly, an online community—can do when they pull together. So if you’re reading this and looking to assist relief efforts (and maximize how far your donations go) from afar, a number of big-name companies are hopping aboard the Good Samaritan bandwagon, with Google, Facebook, and Amazon all currently offering donation matching for relief efforts up to $1 million apiece.