We don't recommend these for new users, but if you have a need for older images (such as you are doing a long-term project based on an older image), you can find them on our GitHub releases page.
There are multiple image files for each release. Look for the file name that matches the device you are using.
|LEGO MINDSTORMS EV3
|Raspberry Pi Model 0/1
|Raspberry Pi Model 2/3
Nearly all of the software that makes up the ev3dev OS is open source. Since ev3dev is based on Debian Linux many software packages come from the official Debian repositories. Source code for these packages can be found at packages.debian.org.
The software that was developed by ev3dev.org is hosted on the ev3dev GitHub site. Direct links to some of the more interesting repositories are listed below.