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Welcome to page of niche operating systems. Here you can get acquainted with niche/hobby operating systems developed in last few decades. Majority of operating systems are sufficiently functional, few however are i.e. IA-32 real mode operating systems, some are even less developed and could be labeled as advanced boot loaders. More interesting operating systems in this page have memory management capabilities, multi-tasking capabilities and file system support. Closed source operating systems are omitted from this list.

  • Author:
    Paul Edwards
    Active since:
    Active till:
    License:
    Public Domain
    Platforms:
    IA-32
  • Author:
    Nils Asmussen
    Active since:
    Active till:
    License:
    GNU GPLv2
    Platforms:
    IA-32, x86-64, ECO32, MMIX
  • Author:
    SharpOS Project
    Active since:
    Active till:
    License:
    GNU GPLv3
    Platforms:
    IA-32
  • Author:
    Charles University, Prague
    Active since:
    Active till:
    License:
    BSD, GPL
    Platforms:
    IA-32, x86-64, SPARC V9, IA-64, PowerPC, ARM, MIPS
  • Author:
    James Molloy, Joerg Pfahler
    Active since:
    Active till:
    License:
    ISC
    Platforms:
    IA-32, x86-64, MIPS32, ARM, PowerPC
  • Author:
    iXsystems
    Active since:
    Active till:
    License:
    FreeBSD license
    Platforms:
    x86_64, ARM
  • Author:
    Ville Mikael Turjanmaa
    Active since:
    Active till:
    License:
    GPL v2 (32-bit)
    Platforms:
    IA-32, x86-64
  • Author:
    Fred Nora
    Active since:
    Active till:
    License:
    BSD
    Platforms:
    IA-32
  • Author:
    Daniel Bittman
    Active since:
    Active till:
    License:
    GNU GPLv2
    Platforms:
    IA-32
  • Author:
    Low-Level comunity
    Active since:
    Active till:
    License:
    BSD
    Platforms:
    IA-32
  • Author:
    Matthew Dillon
    Active since:
    Active till:
    License:
    Modified BSD
    Platforms:
    x86-64
  • Author:
    KolibriOS Project Team
    Active since:
    Active till:
    License:
    GNU GPL
    Platforms:
    IA-32