Contacting Us

OpenSilver is professionally supported by Userware.

  • For general inquiries, please send an email to:

  • For migrations-related inquiries (getting a quote, analyzing the compatibility of your code, discussing the technology, etc.), please write to: or contact Sales at +1 650 515 3332.

  • If you have a Support Plan subscription or would like to subscribe to one, please write to:



We speak English, French, and Italian.
We usually respond within 48 hours weekdays.