We often hear stories about how big enterprises are leveraging the benefits of open source; what we don\u2019t hear so much is how average people are benefiting from it. Benjamin Kerensa is an open source developer who was diagnosed with Type 2 Diabetes and Non-Alcoholic Fatty Liver Disease (NAFLD) in May this year.\n\n\nOne of the first things any diabetic patient needs to do, as Kerensa told me, is to start monitoring and tracking your glucose. "Many of us carry around meters, lancets, etc and are tracking our blood sugar throughout the day. These devices are rather dull and not very great at visualizing data and are entirely closed," he said.\n\n\nAs an open source developer he looked around for open source apps or tools to do the job; he didn\u2019t find any. It\u2019s quite uncomfortable to learn that the software or devices your life depends on are closed, you can\u2019t see the source code of the things your life relies on.\n\n\nAnd he is not alone. Karen Sandler, the Executive Director of the Software Freedom Conservancy, was diagnosed with a heart condition and has to use a pacemaker. She once told in an interview, \u201cMy life relies on the proper functioning of software every day, and I have no confidence that it will. The FDA generally doesn\u2019t review the source code of medical devices nor can the public. But multiple researchers have shown that these devices can be maliciously hacked, with fatal consequences."\n\n\nWhen Kerensa didn\u2019t find any open source mobile or desktop apps he set out to do what open source empowers people like him to do \u2013 write your own open source app. He created an app called Glucosio to track and monitor his glucose level from different devices.\n\n\nThe source code of the application is hosted on Github. Kerensa said, "Our mobile apps use entirely open source libraries; the code is there. Most of it we have written, aside from the graphing, which is an open source external Android library."\n\n\nThe software is currently in an early stage of development. \u201cWe are almost ready to release our first Glucosio for Android Alpha and our iOS app is also underway too,\u201d Kerensa said.\n\n\nThe project is looking for contributions and being open source it's extremely easy to contribute at any level.\n\n\nAccording to Diabetes.org, in 2012 over 29.1 million Americans (that's 9.3% of the population) had diabetes. Chances are, you know someone who has diabetes and you can help them by supporting an open source project that they can trust. If you are a developer, contribute to improve the code; you can help with documentation, or language so it can be translated.\n\n\nThat\u2019s the only way any open source project succeeds \u2013 through collaboration and contribution; through people.