Category:Real-time operating systems

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Real-time operating systems (RTOS)

Operating
systems

POSIX support

Unix-like	DNIX Junos OS LynxOS Multi-Environment Real-Time^ (MERT – Unix-RT) OS2000 QNX^ Real-Time Linux° RTLinux° UNOS
LiteOS	LiteOS°
Partial	ChorusOS^ Integrity^ Nucleus RTOS^ NuttX^° Operating System Embedded^ (OSE) PX5 RTOS^ RIOT^° RTEMS°

TRON support

ITRON project T-Kernel Micro T-Kernel T-Engine Forum (organization) T-License
Partial	eCos° RTEMS°

Capability-based

EROS^°
seL4^°

Java virtual machine

Chorus/Jazz^ (JavaOS + ChorusOS^)

Multiuser DOS
- Concurrent DOS
- FlexOS
- REAL/32

L4 kernel

EKA2^° kernel → Symbian OS^°

Texas Instruments

DSOS
TI-RTOS Kernel^°

DEC PDP-11 & VAX

Low resource

Frameworks, kits

Robot Operating System° 2

Italics = discontinued
^ = Microkernel
° = Open-source software
Comparison Category