A 3K Posix bootstrap kernel written in hex
Boot2Now is a series of compilers in the form of bootable machine images - ironmeld/boot2now
A 3K Posix bootstrap kernel written in hex launched on May 3, 2022 with 5 votes, #1,213 of 2,942 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 4 years on.
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PlanckForth – Bootstrapping an interpreter from handwritten 1kb binary2021 · github.com · ▲132Bootstrapping a Forth interpreter from hand-written tiny ELF binary. Just for fun. - GitHub - nineties/planckforth: Bootstrapping a Forth interpreter from hand-written tiny ELF binary. Just for fun.
1.5kb Microkernel for Ben Eater's 6502 Computer2020 · github.com · ▲230Micro Kernel / Bootloader for Ben Eater's 6502 Computer - janroesner/sixty5o2
Kern – container and resource runtime in a 1.5 MB binary, no daemonAug 2026 · github.com · ▲70A fast, rootless sandbox and virtual resource runtime for any workload, including untrusted and AI-generated code. Daemonless: a real, kernel-enforced container in ~3.5 ms from an OCI image, out of one static binary - getkern/kern
A toy bootloader written in C++2023 · github.com · ▲64Yes, this includes the MBR and partition boot sector. The partition table is modeled as a class hierarchy. Second stage loads a kernel from a FAT32 file. I'm normally a C programmer, but for a work project, I recently revisited C++, a language that I had an on-again-off-again relationship over the years. I did this as a fun training exercise on the side to get familiar with the language again, but obsessed a bit and kind of overshot the target. I thought the result might be of interest to someone.
My microkernel-based OS built from scratch now has basic Unix commands2024 · github.com · ▲69This project contains no code from Linux, BSD, Minix, or any other OS. Everything up until this point is written entirely from scratch, including a pure microkernel (that only implements multiprocessor priority scheduling, memory management, and interprocess communication), a work-in-progress implementation of the standard C library, and a variety of servers that provide drivers and other essential OS functionality. At the time of writing this post, the servers provide drivers for the keyboard, NVMe SSDs (that works on real hardware), a Unix-like virtual file system (with a single root…
PlanckForth: Bootstrapping an Interpreter from Handwritten 1KB Binary2021 · github.com · ▲10Bootstrapping a Forth interpreter from hand-written tiny ELF binary. Just for fun. - GitHub - nineties/planckforth: Bootstrapping a Forth interpreter from hand-written tiny ELF binary. Just for fun.
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