We want to wish you a happy Software Freedom Day 2021! Check current events worldwide at https://www.softwarefreedomday.org/map/ . Know that most are online, so you can definitely hope in a "next country'" event and participate, like we dd earlier in Christchurch, New Zealand, earlier today! Have fun!
Here's a little thing that may not be obvious to many people....
When you install an open-source app from Google Play or the Apple app store, there is no guarantee that what you install actually matches the public code.
@fdroidorg are doing a great service. They independently build the public source code for apps from scratch, review for common issues, and publish their builds. Thanks to "reproducible builds" it's possible to verify they do not tamper with the code.
Started in 2004 to promote Free Software with Software Freedom Day, Digital Freedom Foundation later registered as a charity in the USA under the Software Freedom International name in 2007, is the non-profit organization at the origin of Software Freedom Day, Education Freedom Day and Hardware Freedom Day. The name change came progressively starting in 2011 in order to reflect the changes in our directions and also because we had to change registration territory.