I somehow missed this but the WebAssembly backend for libusb (and therefore WebUSB) was officially merged in 1.0.27. Wasm all the things!
libusb/ChangeLog at master · libusb/libusb
A cross-platform library to access USB devices . Contribute to libusb/libusb development by creating an account on GitHub.
buff.ly
September 17, 2024 at 4:49 AM
I somehow missed this but the WebAssembly backend for libusb (and therefore WebUSB) was officially merged in 1.0.27. Wasm all the things!
ugh, libusb is *so bad* T~T
April 22, 2025 at 12:28 AM
ugh, libusb is *so bad* T~T
Nobody:
Absolutely nobody:
My mind: Huh so node-usb implements WebUSB. One can compile node-usb to Wasm. node-usb uses libusb. libusb has Wasm backend. Wasm backend uses WebUSB. WebUSB is implemented via libusb on some platforms [...]
Absolutely nobody:
My mind: Huh so node-usb implements WebUSB. One can compile node-usb to Wasm. node-usb uses libusb. libusb has Wasm backend. Wasm backend uses WebUSB. WebUSB is implemented via libusb on some platforms [...]
November 27, 2023 at 9:12 PM
Nobody:
Absolutely nobody:
My mind: Huh so node-usb implements WebUSB. One can compile node-usb to Wasm. node-usb uses libusb. libusb has Wasm backend. Wasm backend uses WebUSB. WebUSB is implemented via libusb on some platforms [...]
Absolutely nobody:
My mind: Huh so node-usb implements WebUSB. One can compile node-usb to Wasm. node-usb uses libusb. libusb has Wasm backend. Wasm backend uses WebUSB. WebUSB is implemented via libusb on some platforms [...]
My parents' printer can either connect to wifi via WPS (which eero doesn't support because it's terrifyingly insecure) or through a Windows app communicating over USB which is just throwing errors so I guess it's going to be USB protocol dumping and libusb time
December 24, 2025 at 7:26 PM
My parents' printer can either connect to wifi via WPS (which eero doesn't support because it's terrifyingly insecure) or through a Windows app communicating over USB which is just throwing errors so I guess it's going to be USB protocol dumping and libusb time
libusb 1.0.27-rc1 is out - this is the first official release candidate with my WebAssembly + WebUSB backend, with the official release coming soon!
github.com/libusb/libus...
github.com/libusb/libus...
libusb 1.0.27-rc1 · libusb/libusb@cc3df77
Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
github.com
December 10, 2023 at 6:44 PM
libusb 1.0.27-rc1 is out - this is the first official release candidate with my WebAssembly + WebUSB backend, with the official release coming soon!
github.com/libusb/libus...
github.com/libusb/libus...
wow programming for native WinUSB isn't as bad as i thought. very Windows-y full of Windows-isms but it isn't *bad*...
somewhat surprised libusb doesn't support just interfacing with the WinUsb driver directly but i guess the concepts don't necessarily match 1:1
somewhat surprised libusb doesn't support just interfacing with the WinUsb driver directly but i guess the concepts don't necessarily match 1:1
May 27, 2026 at 7:29 AM
wow programming for native WinUSB isn't as bad as i thought. very Windows-y full of Windows-isms but it isn't *bad*...
somewhat surprised libusb doesn't support just interfacing with the WinUsb driver directly but i guess the concepts don't necessarily match 1:1
somewhat surprised libusb doesn't support just interfacing with the WinUsb driver directly but i guess the concepts don't necessarily match 1:1
scrcpy 4.1 enhances Android screen mirroring with VP8/VP9 video encoders, FFmpeg 8.1.2, SDL 3.4.12, libusb 1.0.30, and usability improvements. It offers better performance, stability, and workflow features, improving Android device control.
alternativeto.net/news/2026/7...
alternativeto.net/news/2026/7...
July 13, 2026 at 2:59 PM
scrcpy 4.1 enhances Android screen mirroring with VP8/VP9 video encoders, FFmpeg 8.1.2, SDL 3.4.12, libusb 1.0.30, and usability improvements. It offers better performance, stability, and workflow features, improving Android device control.
alternativeto.net/news/2026/7...
alternativeto.net/news/2026/7...
Finally found a use for my Arduino. Turns out you can replace the firmware on its usb controller so it can emulate different types of USB device. Pretty useful for tinkering with libusb.
December 9, 2025 at 12:29 AM
Finally found a use for my Arduino. Turns out you can replace the firmware on its usb controller so it can emulate different types of USB device. Pretty useful for tinkering with libusb.
El software del control deck solo existía para Windows. Le hice ingeniería inversa a la DLL, leí el tráfico USB y armé mi propio daemon en Python con libusb. Código abierto. #linux #reverseengineering #opensource
September 23, 2026 at 9:15 PM
El software del control deck solo existía para Windows. Le hice ingeniería inversa a la DLL, leí el tráfico USB y armé mi propio daemon en Python con libusb. Código abierto. #linux #reverseengineering #opensource
So dann lernen wir mal nebenbei, wie man die libusb richtig benutzt
August 5, 2024 at 10:30 AM
So dann lernen wir mal nebenbei, wie man die libusb richtig benutzt
I came into possession of this bump bar. Been trying to figure out how to macro its inputs into short cuts but can not figure out how lol. Might try libusb in #CPP but I’m better of just using an #arduino at this point #programming #gamedev #indiedev
February 14, 2026 at 7:06 PM
I came into possession of this bump bar. Been trying to figure out how to macro its inputs into short cuts but can not figure out how lol. Might try libusb in #CPP but I’m better of just using an #arduino at this point #programming #gamedev #indiedev
Emscripten is honestly incredible, there is even a libusb backend
You can basically yoink any PC program and run it in your browser
You can basically yoink any PC program and run it in your browser
February 26, 2025 at 6:10 AM
Emscripten is honestly incredible, there is even a libusb backend
You can basically yoink any PC program and run it in your browser
You can basically yoink any PC program and run it in your browser
what is even the reason for high level hardware drivers to run in kernelspace on linux. on windows there's like a few cases it's needed (winusb and hid shit sucked so badly until mid way through windows 10) but why linux. libusb is smo nice
November 3, 2024 at 8:04 PM
what is even the reason for high level hardware drivers to run in kernelspace on linux. on windows there's like a few cases it's needed (winusb and hid shit sucked so badly until mid way through windows 10) but why linux. libusb is smo nice
Can also interact with it on modern Windows by using libusb instead of the pclcd.sys x86 XP driver. Works for reading, but I haven't figured out how to draw to it yet. I have no idea how I got the last few lines to work here, and I haven't been able to replicate it since.
May 23, 2026 at 1:49 PM
Can also interact with it on modern Windows by using libusb instead of the pclcd.sys x86 XP driver. Works for reading, but I haven't figured out how to draw to it yet. I have no idea how I got the last few lines to work here, and I haven't been able to replicate it since.
Whew, as part of a fun contract nearing the end made a large PR to libusb to update my WebAssembly + WebUSB backend. github.com/libusb/libus...
Includes lots of improvements, most notably multithreading support via Emscripten's proxying API and the recently added co_await for JavaScript promises.
Includes lots of improvements, most notably multithreading support via Emscripten's proxying API and the recently added co_await for JavaScript promises.
Wasm+WebUSB backend fixes and improvements by RReverser · Pull Request #1339 · libusb/libusb
I've been recently working on a large project that uses libusb and WebUSB and had to make lots of improvements to the backend in the process.
Here's a list of primary fixes & changes:
Added long-a...
github.com
November 15, 2023 at 11:05 PM
Whew, as part of a fun contract nearing the end made a large PR to libusb to update my WebAssembly + WebUSB backend. github.com/libusb/libus...
Includes lots of improvements, most notably multithreading support via Emscripten's proxying API and the recently added co_await for JavaScript promises.
Includes lots of improvements, most notably multithreading support via Emscripten's proxying API and the recently added co_await for JavaScript promises.
what thw FUCK does any of this mean. pwndfu mode. libusb. kdfu. shsh blob. usb host shield. mac book.
January 2, 2026 at 9:34 PM
what thw FUCK does any of this mean. pwndfu mode. libusb. kdfu. shsh blob. usb host shield. mac book.
this is actually extremely annoying because now i think libusb can't claim it anymore. great.
OH MACOS JUST GAINED PROPER SUPPORT FOR USB WIRED GAME CONTROLLERS ACTUALLY??
June 19, 2025 at 5:40 PM
this is actually extremely annoying because now i think libusb can't claim it anymore. great.
i’ve been prototyping yet new input code recently. no more smx sdk; came up with my own solution using the same low-level usb library that i believe itg uses to communicate with piuio (libusb). it’s working quite well for me.
August 3, 2025 at 3:53 PM
i’ve been prototyping yet new input code recently. no more smx sdk; came up with my own solution using the same low-level usb library that i believe itg uses to communicate with piuio (libusb). it’s working quite well for me.
SDL: Fixed building with libusb on FreeBSD
SDL: Fixed building with libusb on FreeBSD
github.com
October 24, 2025 at 5:41 PM
SDL: Fixed building with libusb on FreeBSD
SDL: Fix libusb get_port_numbers signature for FreeBSD
SDL: Fix libusb get_port_numbers signature for FreeBSD
github.com
October 24, 2025 at 3:26 PM
SDL: Fix libusb get_port_numbers signature for FreeBSD
I made a synthesizer! This is written in C, using libusb, portmidi, SDL, etc. - the hardest part was to get something onto the screen. I wrote more about this on my blog: kaikuehne.net/chordel/
#ableton #push #synthesizer
#ableton #push #synthesizer
March 28, 2025 at 11:48 AM
I made a synthesizer! This is written in C, using libusb, portmidi, SDL, etc. - the hardest part was to get something onto the screen. I wrote more about this on my blog: kaikuehne.net/chordel/
#ableton #push #synthesizer
#ableton #push #synthesizer
SDL: Add libusb library name for detection on FreeBSD
SDL: Add libusb library name for detection on FreeBSD
github.com
October 24, 2025 at 5:41 PM
SDL: Add libusb library name for detection on FreeBSD
install libusb-1_0-0-32bit
February 17, 2025 at 9:13 PM
install libusb-1_0-0-32bit
Someone ported SANE (scanner library) to the Web using my prior work on the libusb WebAssembly backend 😍
https://github.com/goncalomb/sane-wasm
https://github.com/goncalomb/sane-wasm
April 29, 2023 at 11:15 AM
Someone ported SANE (scanner library) to the Web using my prior work on the libusb WebAssembly backend 😍
https://github.com/goncalomb/sane-wasm
https://github.com/goncalomb/sane-wasm
USBデバイスの接続状況を可視化するTUIツール。USBハブの接続状況や通信状況も表示可。Linux, macOS, Windowsに対応。Rust実装
GitHub - gnomeria/usbtree: Live USB device tree in your terminal. Rust TUI, no root, no libusb. Full activity metrics on Linux; device tree on macOS/Windows.
Live USB device tree in your terminal. Rust TUI, no root, no libusb. Full activity metrics on Linux; device tree on macOS/Windows. - gnomeria/usbtree
github.com
August 8, 2026 at 10:43 AM
USBデバイスの接続状況を可視化するTUIツール。USBハブの接続状況や通信状況も表示可。Linux, macOS, Windowsに対応。Rust実装