Ironclad

Ironclad is a formally verified, hard real-time capable kernel for general-purpose and embedded uses, written in SPARK and Ada. It is comprised of 100% free software, free in the sense that it respects the user's freedom.

Some of the supported features are:

A familiar POSIX-compatible interface.
True simultaneous preemptive multitasking.
Advanced cryptography and a security-centered architecture.
Mandatory Access Control (MAC).
Highly configurable, hard real-time scheduling.
Support for several architectures and boards.

News

2023-Oct-31: Ironclad 0.5.0 released

2023-Oct-18: Ada Monthly Meetup presentation!

2023-Aug-31: New domain: ironclad.cx

2023-Aug-31: Ironclad 0.4.0

Further news can be read here.

Releases

Ironclad uses semantic versioning. Support thru major versions, porting bug fixes, will be done in a case-by-case basis time period, but for no shorter than 6 months since release.

All releases and their signatures can be found at the main repository. Here's a table of the latest releases:

Version	Released	End of life	Downloads	Documentation
0.5.0	2023-Oct-31	Not stable	[.tar.gz] [.sig]	[html] [pdf]
0.4.0	2023-Aug-31	Not stable	[.tar.gz] [.sig]
0.3.0	2023-Apr-02	Not stable	[.tar.gz] [.sig]

All releases are signed using PGP, please check the signatures before using the downloaded tarballs. The release keyring can be found here.

Who uses Ironclad?

Some distributions use Ironclad as its kernel, for example, visit Gloire, a general purpose desktop OS using Ironclad along GNU userland tools.

Thanks to