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Life & fun · alternatives · 2026

24 alternatives to The Gnuk Smartcard Based on the STM32F1x and Geehy APM32

Sign, authenticate and encrypt with a USB dongle at the cost of a soda. The goal here was to easily program around ~20 Gnuk devices at the budget of a single dongle of the commercial solution. Contains every step and fixes to get it running on current and next Ubuntu and Debian versions.

Gnuk is a USB smartcard device based on STM32F1x and Geehy APM32 microcontrollers that performs cryptographic operations including signing, authentication, and encryption. Designed for developers and organizations… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Using only a Raspberry Pi and an $11 video capture dongle, you can create your own KVM over IP device, allowing you to send keyboard input to a remote computer and capture its display.

    2020 · mtlynch.io · its alternatives →

  2. 2

    Hardware-based authentication

    2018 · yubico.com · its alternatives →

  3. 3

    A Flipper Zero clone, but cheapest, DIY and simply Open Source, made with Arduino IDE - lraton/FlopperZiro

    2025 · github.com · its alternatives →

  4. 4

    A Virtual FIDO2 USB Device. Contribute to bulwarkid/virtual-fido development by creating an account on GitHub.

    2022 · github.com · its alternatives →

  5. 5TS
  6. 6

    Transform your PC into a Raspberry Pi. Contribute to gbin/DonglePi development by creating an account on GitHub.

    2015 · github.com · its alternatives →

  7. 7

    This 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…

    2024 · github.com · its alternatives →

  8. 8IM

    Building a 10BASE-T Ethernet transceiver (receiver and transmitter) with discrete logic chips

    2024 · qdiv.dev · its alternatives →

  9. 9

    U2F USB token optimized for physical security, affordability, and style - conorpp/u2f-zero

    2016 · github.com · its alternatives →

  10. 10

    I've been hacking away lately, and I'm now proud to show off my newest project - The Icepi Zero! In case you don't know what an FPGA is, this phrase summarizes it perfectly: "FPGAs work like this. You don't tell them what to do, you tell them what to BE." You don't program them, but you rewrite the circuits they contain! So I've made a PCB that carries an ECP5 FPGA, and has a raspberry pi zero footprint. It also has a few improvements! Notably the 2 USB b ports are replaced with 3 USB C ports, and it has multiple LEDs. This board can output HDMI, read from a uSD, use a SDRAM and much more.…

    2025 · github.com · its alternatives →

  11. 11

    User friendly Cryptnox hardware wallet and mobile app

    2024 · cryptnox.com · its alternatives →

  12. 12

    ## Auto-archived due to inactivity. ## YubiKey at Datadog - DataDog/yubikey

    2019 · github.com · its alternatives →

  13. 13

    A minimalist and secure Bitcoin hardware wallet

    2017 · bitbox.swiss · its alternatives →

  14. 14SA

    Hey folks, We are the team behind Slik. Over the past year, we have been hacking on SlikSafe [1] a Dropbox alternative where all your data is first encrypted on your own device and then stored on decentralized storage. Some features we're most excited about are - - multi-device data sync, - auto-backups via desktop apps, - search your docs by name or contents with end-to-end encryption, - easy sharing via email, QR-code or private-link, - Password-less login using MetaMask/Phantom We leverage storage providers IPFS and Storj for global redundancy, reliability, and immutability. You can…

    2021 · its alternatives →

  15. 15

    Open source Yubikey alternative with dual USB-C and USB-A

    2021 · onlykey.io · its alternatives →

  16. 16
    OnlyKey▲118

    OnlyKey is an open source alternative to YubiKey

    2019 · onlykey.io · its alternatives →

  17. 17

    Simple demo illustrating remanence of data in RAM (see Cold boot attack) using a Raspberry Pi. Loads many images of the Mona Lisa into RAM and recovers after powering off/on again. - anfractuosity/ramrecovery

    2024 · github.com · its alternatives →

  18. 18

    Contribute to Park07/amradio development by creating an account on GitHub.

    Feb 2026 · github.com · its alternatives →

  19. 19

    pckb -- backup 128 bits to physical medium. Contribute to volution/punchcard-key-backup development by creating an account on GitHub.

    2025 · github.com · its alternatives →

  20. 20

    Definitely one of those "20 minute adventure gone wrong" projects where all I wanted initially was a quick wireless rubber ducky for bitlocker keys and the like and then I kept adding stuff like AES-256..... Currently working on adding WebAuthn/FIDO support because the hardware is already there and scope creep is a lifestyle at this point. Would love feedback, especially on the security side. Repo and PCB files are fully open source.

    Jul 2026 · github.com · its alternatives →

  21. 21OT

    In the past few days, there have been uncertainties and concerns about the LUKS (“Linux Unified Key Setup”) disk encryption, which is widely used on Linux. We publish our assessment of this here.

    2023 · dys2p.com · its alternatives →

  22. 22

    Turing Pi is a compact ARM cluster that provides a secure and scalable compute in the edge. It is designed to make web-scale edge computing easier for developers.

    2020 · turingpi.com · its alternatives →

  23. 23

    Tracking history of USB events on GNU/Linux. Contribute to snovvcrash/usbrip development by creating an account on GitHub.

    2019 · github.com · its alternatives →

  24. 24

    Take the initiative to protect privacy in your own hands

    2021 · github.com · 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 →