Apps similar to Tails include Kali Linux, which is free and open source. Other options are Qubes OS, Whonix, Parrot Security OS and Alpine Linux. Operating Systems like Tails are a crowded field, with more than 100 alternatives for Linux, self-hosting, Windows, Mac and the web.
EuroLinux is an enterprise-class Linux distribution made and supported by the EuroLinux company, built directly from source code of Red Hat Enterprise Linux.
Poland
EU
ToaruOS is a completely-from-scratch hobby operating system: bootloader, kernel, drivers, C library, and user space including a composited graphical UI, dynamic linker, syntax-highlighting text editor, network stack, etc.
United States
Sourcemage is a source-based GNU/Linux distribution based on a Sorcery metaphor of 'casting' and 'dispelling' programs, which we refer to as 'spells'.
United States
The Zeal Operating System is a modernized, professional fork of the 64-bit Temple Operating System. Guiding principles of development include transparency, full user control, and adherence to public-domain/open-source implementations.
ExTiX is a desktop Linux distribution and live DVD based on Ubuntu, offering a choice of alternative desktop environments.
SwedenEU
Visopsys (VISual OPerating SYStem) is an alternative operating system for PC-compatible computers, written “from scratch”, and developed primarily by a single hobbyist programmer since 1997.
Laxer OS is an Arch Linux-based distribution of Linux for work and everyday use. Our OS is available for any 64-bit computer, laptop, or tablet. Our distribution focuses on security, reliability, and performance, Laxer OS is a versatile, and simple Linux distribution designed to...
Amphiptere OS is a custom, lightweight, Debian-based Linux distribution built specifically for purple team operators, cybersecurity students, and tool developers.
Vitruvian is an operating system based on Linux, heavily inspired by BeOS, bringing the elegance and simplicity of a classic operating system to modern hardware. It leverages Linux's hardware support while maintaining the responsive, user-friendly nature of BeOS.
Kicksecure is a free and open-source Linux distribution that aims to provide a highly secure computing environment. It has been developed from the ground up according to a formidable -- and time proven -- defense in-depth security design.
PorteuX is a Linux distro based on Slackware, inspired by Slax and Porteus and available to the public for free under GPL. Its main goal is to be super fast, small, portable, modular and immutable (if the user wants so).
Astral is a 64 bit operating system with its own kernel written in C for the x86-64 architecture.
Brazil
