Life & fun · alternatives · 2026

24 alternatives to #AlphanumericShellcoding, alphanumeric shellcodes on RISC-V [DEFCON'27]

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. #AlphanumericShellcoding, alphanumeric shellcodes on RISC-V [DEFCON'27] launched in 2019; newer entries below may have overtaken it.

1
A hash array-mapped trie implementation in C▲171
Long-simmering side project that is finally ready to see the light. HAMTs are a cool persistent data structure and implementing one has been a lot of fun. Beyond the code, there is likely some value in the extensive and largely complete implementation docs; basic benchmarks are linked in the README, too. Kind of aiming to be "the libavl for HAMTs". That is obviously a high and aspirational bar but a distinct possibility if it stirs up a little interest and/or contribution. Anyways, it's time for this to go out, collect feedback and maybe even some use outside of toy projects. Let me…
2023 · github.com · its alternatives →
2
CLI tool for detecting non-exact code duplication with embedding models▲91
Embedding-based code duplication detector. Contribute to rafal-qa/slopo development by creating an account on GitHub.
Jul 2026 · github.com · its alternatives →
3
FractalCrypt 2.0 – free deniable encryption cryptoarchiver▲128
Free cross-platform deniable encryption cryptoarchiver - GitHub - zorggomat/FractalCryptGUI: Free cross-platform deniable encryption cryptoarchiver
2021 · github.com · its alternatives →
4
A Fast, Malloc-Free C++14 Json Parser and Encoder▲98
Meta programming utilities for C++14. Merged in matt-42/lithium - matt-42/iod
2014 · github.com · its alternatives →
5
Re/code Decode - Y Combinator's Sam Altman▲92
and the internet of things and Google
2015 · serve.castfire.com · its alternatives →
6AR
A RISC-V core in Racket▲122
2021 · guillaume.baierouge.fr · its alternatives →
7
Monomorph – pack any shellcode into a binary with a fixed MD5 hash▲28
MD5-Monomorphic Shellcode Packer - all payloads have the same MD5 hash - DavidBuchanan314/monomorph
2022 · github.com · its alternatives →
8
C++17 RISC-V RV32GC / RV64GC userspace emulator library▲31
The fastest RVA23 RISC-V sandbox. Contribute to libriscv/libriscv development by creating an account on GitHub.
2020 · github.com · its alternatives →
9
Libriscv – RISC-V userspace emulator library▲40
The fastest RVA23 RISC-V sandbox. Contribute to libriscv/libriscv development by creating an account on GitHub.
2022 · github.com · its alternatives →
10
Shellular – run Claude Code, Codex, Pi from your phonefree▲33
Run Claude Code, Codex, Cursor, and OpenCode on mobile and write code from your phone. Shellular gives you secure remote access to your dev machine: a real agent UI, terminal, files, Git, ports, and browser DevTools, all from your phone.
Jul 2026 · shellular.dev · its alternatives →
11
BSD-licensed Viterbi, Reed-Solomon encoder/decoder▲7
C library for Convolutional codes and Reed-Solomon - quiet/libcorrect
2016 · github.com · its alternatives →
12
Aether▲26
Since coding agents like Claude Code and Codex came out, I've been pretty obsessed with them. It's hard not to when you're getting a 20x discount on inference. I've also been frustrated by them a lot. I hated walking around with my laptop lid open while connected to a hotspot on my phone, having to tediously accept commands so I don't lose my root directory, and running out of RAM when running multiple agents that were spinning up dev servers in different worktrees at once. A lot of people would say existing cloud agents are the solution to this, as none of the above problems apply to any…
Jul 2026 · runaether.dev · its alternatives →
13
Steganographically encode messages with LLMs and Arithmetic Coding▲24
Good morning HN! For a while now I have been toying with this idea and now finally have a working prototype. This project allows you to encode secret messages into ordinary looking text by using arithmetic coding with a probability model derived from an LLM. By encrypting the message and then decompressing the encrypted message using the arithmetic coder, you get output which looks just like randomly sampled output from the LLM. Except, it actually encodes your secret messages in the specific choices of tokens. By using authenticated encryption, only a user who knows the key can know that a…
2025 · github.com · its alternatives →
14
Openemacs – a tiny emacs clone, ≤ 1024 LOC (C), based on kilo (BSD)▲8
2016 · github.com · its alternatives →
15
Outperforming VByte for Large Integers Using Phi-Encoding▲15
Properties of a Novel Binary Representation of Integers using Base-𝜙 - irradix/paper.md at main · DOSAYGO-STUDIO/irradix
2024 · github.com · its alternatives →
16IW
ISA Workbench – Classify and explore binaries in the browser▲6
11d ago · zr.ax · its alternatives →
17AC
A CPython Library for Runtime Bytecode Transformations▲5
2016 · codetransformer.readthedocs.org · its alternatives →
18CA
Crsh – A JavaScript based command line shell▲9
2020 · crwi.uk · its alternatives →
19CI
Cheatcode.io, a Swift syntax reference▲9
2014 · cheatcode.io · its alternatives →
20
Buddy Barcode Generator▲14
The friendly barcode generator! Fast, free, and easy to use.
2025 · buddybarcodegenerator.netlify.app · its alternatives →
21BA
Baseconv: a (very) tiny number conversion utility▲5
2016 · baseconv.ddns.net · its alternatives →
22CS
Code search for Rust, Ruby, Haskell – with regex support▲5
2019 · codesearch.aelve.com · its alternatives →
23BS
Breaking Substitution Ciphers with Markov Chains▲9
2020 · daniellowengrub.com · its alternatives →
24
AllCiphers▲10
Free online encryption & decryption tools
2025 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →