# libusb [](https://travis-ci.org/libusb/libusb) [](https://ci.appveyor.com/project/LudovicRousseau/libusb) [](https://scan.coverity.com/projects/libusb-libusb) libusb is a library for USB device access from Linux, Mac OS X, Windows, OpenBSD/NetBSD and Haiku userspace. It is written in C (Haiku backend in C++) and licensed under the GNU Lesser General Public License version 2.1 or, at your option, any later version (see [COPYING](COPYING)). libusb is abstracted internally in such a way that it can hopefully be ported to other operating systems. Please see the [PORTING](PORTING) file for more information. libusb homepage: http://libusb.info/ Developers will wish to consult the API documentation: http://api.libusb.info Use the mailing list for questions, comments, etc: http://mailing-list.libusb.info - Pete Batard <pete@akeo.ie> - Hans de Goede <hdegoede@redhat.com> - Xiaofan Chen <xiaofanc@gmail.com> - Ludovic Rousseau <ludovic.rousseau@gmail.com> - Nathan Hjelm <hjelmn@cs.unm.edu> - Chris Dickens <christopher.a.dickens@gmail.com> (Please use the mailing list rather than mailing developers directly)