The current and fifth official release of DiscoBSD is DiscoBSD 2.4, released on February 11, 2025.
The release of DiscoBSD 2.4 marks the 33rd anniversary of 2.11BSD.
This microcontroller-focused operating system is an independent continuation of
RetroBSD,
a 2.11BSD-based OS targeting the MIPS-based PIC32MX7.
DiscoBSD is multi-platform, as it also supports Arm Cortex-M4 STM32F4 devices.
Source code to the system is freely available under a BSD-like license.