Giving.Code is a new project that has the aim of getting programmers, designers and system administrators to collaborate on new software for the good of humanity. They list a bunch of projects that people can work on that will benefit everyone in our society, such as a Lion Tracking project in Kenya which promotes environmental kindness. Inventory management for relief supplies is another project and while it’s amazing that we can all band together and get the logistics going for a relief effort, there’s software and infrastructure behind that effort that supports it.
If you want to get active in free/open source software, you might want to take a look at OpenHatch. While they don’t have the same objective as Giving.Code, they’re another place to start in terms of collaboration. They list projects and issues that they need help with. They have a nice list of events to attend as well.