Open source

FluentValidation is a .net library for building validation rules.


Become a financial contributor.

Financial Contributions

Recurring contribution


Support us with a monthly donation and help us continue our activities.

Starts at$2 USD / month

Recurring contribution


Become a project sponsor with a montly donation of $100 or more and get your logo added to the sponsors area of the FluentValidation website and gi... Read more

Starts at$100 USD / month

Custom contribution


Make a custom one-time or recurring contribution.

FluentValidation is all of us

Our contributors 1

Thank you for supporting FluentValidation.


Transparent and open finances.

Today’s balance

--.-- USD

Total raised

--.-- USD

Total disbursed

--.-- USD

Estimated annual budget

--.-- USD


 FluentValidation is a A .NET library for building strongly-typed validation rules. For more details on the project please visit our website at https://fluentvalidation.net or our GitHub page.

Our team