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ViewSB: open-source USB Analyzer software

ViewSB is a USB analyzer that supports various capture backends including GreatFET, OpenVizsla, and usbmon.

Getting Help

For assistance with ViewSB general use or development, please look at the issues on the GitHub project. This is the preferred place to ask questions so that others may locate the answer to your question in the future.

We invite you to join our community discussions on Discord. Note that while technical support requests are welcome here, we do not have support staff on duty at all times. Be sure to also submit an issue on GitHub if you’ve found a bug or if you want to ensure that your request will be tracked and not overlooked.

GitHub issues on this repository that are labelled "technical support" can expect a response time of two weeks. We currently do not have expected response times for other GitHub issues or pull requests for this repository.


ViewSB is dual-licensed under the GNU General Public License version 2 or higher, as well as the BSD 3-Clause License.

We are not lawyers; consult your legal team for exactly what the limitations of use are as far as using ViewSB with other software. ¯\(ツ)

You can find a copy of both licenses in the LICENSE-GPLv2 and LICENSE-BSD files respectively.


open-source USB analyzer toolkit with support for a variety of capture hardware




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