RetroBSD is a port of 2.11BSD Unix intended for embedded systems with fixed memory mapping. The current target is Microchip PIC32 microcontroller with 128 kbytes of RAM and 512 kbytes of Flash.
macOS Alternatives
macOS is described as 'Unix-based operating system for Macs, excels with an intuitive UI, robust built-in apps like Safari, and strong security via FileVault, Gatekeeper, and SIP' and is a leading operating system in the os & utilities category. There are more than 100 alternatives to macOS for a variety of platforms, including Linux, Self-Hosted, BSD, Mac and Windows apps. The best macOS alternative is Ubuntu, which is both free and Open Source. Other great apps like macOS are Linux Mint, elementary OS, Debian and Fedora.
Alternatives list
ExectOS aims to be a stable and flexible, general purpose operating system written from scratch. It is designed to be modular, maintainable and compatible with existing software. It implements a brand new XT architecture and features own native application interface.
Ubuntu Cloud is an open source Linux operating system designed to be used as a personal cloud server. It is based on the well known Ubuntu Linux distribution and recognized as an official Ubuntu flavor, distributed by Canonical.
Cost / License
- Free
- Open Source
Platforms
- Linux
Peropesis is a small-scale, minimalist, command-line-based Linux operating system. It's an incomplete system, but it's constantly being improved. Also, it is a free operating system created from a free software.
ParticleOS is a fully customizable immutable distribution implementing the concepts described in Fitting Everything Together.
Darwin is the Open Source operating system from Apple that forms the basis for Mac OS X, and PureDarwin is a community project to make Darwin more usable (some people think of it as the informal successor to OpenDarwin.

Infinitive OS is an open-source project created to replace windows and macOS, it mounts the latest versions of the Linux kernel and contains open source components but also proprietary software. It has the KDE desktop environment pre-installed
Cost / License
- Free
- Proprietary
Platforms
- Linux


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GNU-Darwin aims to be the most free software distribution. Our mission is two-fold: Focus on projects that leverage our unique combination of Darwin and GNU, and help users to enjoy the benefits of software freedom.





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Cost / License
- Free
- Proprietary
Application types
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Linux




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