Alternatives

Products that do what Realtime OS for Cortex-M0 Under 1K Bytes does

1H3
Homemade 32-bit CPU and OS (2015) [video]▲253
2016 · youtube.com
215
1.5kb Microkernel for Ben Eater's 6502 Computer▲230
2020 · github.com
3XA
xOS – a 32-bit OS for the PC▲115
2016 · github.com
4AL
A “living” Linux process with no memory▲312
2020 · github.com
5MO
Minoca OS – A new lightweight kernel, completely from scratch▲168
2016 · minocacorp.com
6AS
A small virtual machine written in C▲212
2014 · github.com
7MF
Minimal freestanding C runtime for bare-metal/embedded PC projects▲97
2015 · github.com
8AM
A minimal C runtime for Linux i386 and x86_64 in 87 SLOC of C▲172
2015 · github.com
9AO
An OS that installs in less than 2 seconds▲12
2015 · urdesk.net
10A1
A 16-bit Forth machine written in VHDL▲80
2014 · github.com
11NA
Nønos – a zero-state OS that runs in RAM▲9
Dec 2025 · docs.nonos.systems
12PB
PlanckForth – Bootstrapping an interpreter from handwritten 1kb binary▲132
2021 · github.com
13PI
Pong in 512 bytes (boot sector)▲71
2020 · github.com
14AM
A Microkernel OS for Armv8▲16
2021 · github.com
15HT
Hypervisor toolkit for low cost dual core Cortex-A9 platform▲22
2011 · l4dev.org
16TP
Turing Pi 2 – a compact ARM cluster with 32 GB RAM▲109
2020 · turingpi.com
178B
8-bit CPU simulator in C▲67
2020 · github.com
18AP
A pipelined RISC-V processor written in VHDL▲65
2015 · github.com
19CF
Compile for Arm at native speeds in an emulated system▲63
2021 · github.com
20TC
Tiny C runtime Linux (rt0), HelloWorld 0.6k (i386), sbrk example added▲49
2015 · github.com
21SM
SixtyFPS – multi-language GUI toolkit for desktop/embedded▲44
2020 · sixtyfps.io
22MM
Mmm – manual memory management for Go▲72
2015 · github.com
23LT
Lightweight time-management CLI tool▲72
2016 · github.com
24AT
A tiny mips 4kc emulator (boots linux)▲5
2014 · github.com

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