MediatR: The simple yet powerful mediator

Enable scalable, maintainable application architectures with proven patterns and techniques.

App screenshot

The Most Popular Mediator and Command Dispatcher

Hundreds of millions of downloads. One simple pattern.
Supports .NET 8.0+ and .NET Framework 4.6.2+

Simple mediator implementation
Supports in-process messaging patterns such as request/response and event notifications, or more performance-demanding use cases such as streams.
Enable powerful and maintainable architectures
Perfect fit for Command-Query Responsibility Segregation (CQRS) and Vertical Slice Architecture (VSA). Application logic becomes neatly encapsulated in a uniform interface.
Extensible pipeline middleware
Apply common application logic patterns across handlers via pipelines. Reduce boilerplate or target complex scenarios with generic constraints.
Proven design
APIs refined over countless clients, users, and downloads. Designs proven with first-hand usage in dozens and dozens of customer projects.
Robust community
Join a group of like-minded users implementing CQRS and VSA. Share your insights and ask questions to fellow experts.
Simple configuration
Rich scanning and auto-registering process instead of leaning on feature-poor dependency injection containers.

Pricing that grows with you

Choose the plan that's targeted for your team's needs. From emerging startups to established enterprises, our pricing scales with your growth and supports your budget with team-based pricing.

Bundle with AutoMapper (Save 20%)

Community

FREE*

Get Now
  • Unlimited developers
  • Unlimited deployment
  • Install via NuGet
  • Includes AutoMapper and MediatR

Standard

$799 /year

Buy Now

$80 /month

Buy Now
  • 1 to 10 developers
  • Unlimited deployments
  • Install via NuGet
  • Install via private NuGet feed
  • Access to private Discord server
  • Early access to new releases

Standard

$499 /year

Buy Now

$50 /month

Buy Now
  • 1 to 10 developers
  • Unlimited deployments
  • Install via NuGet
  • Install via private NuGet feed
  • Access to private Discord server
  • Early access to new releases

Professional

$1499 /year

Buy Now

$150 /month

Buy Now
  • 11 to 50 developers
  • Unlimited deployments
  • Install via NuGet
  • Install via private NuGet feed
  • Access to private Discord server
  • Early access to new releases

Professional

$2399 /year

Buy Now

$240 /month

Buy Now
  • 11 to 50 developers
  • Unlimited deployments
  • Install via NuGet
  • Install via private NuGet feed
  • Access to private Discord server
  • Early access to new releases

Enterprise

$6399 /year

Buy Now

$640 /month

Buy Now
  • Unlimited developers
  • Unlimited deployments
  • Install via NuGet
  • Install via private NuGet feed
  • Access to private Discord server
  • Early access to new releases
  • Priority bug fixes
  • Priority email support

Enterprise

$3999 /year

Buy Now

$400 /month

Buy Now
  • Unlimited developers
  • Unlimited deployments
  • Install via NuGet
  • Install via private NuGet feed
  • Access to private Discord server
  • Early access to new releases
  • Priority bug fixes
  • Priority email support

* Companies and individuals with less than $5,000,000 USD in annual gross revenue, and registered non-profits with less than $5,000,000 USD annual total budget. Government or quasi-government agencies do not qualify.

Note: An entity or organization may not have ever received more than $10,000,000 USD in capital from an outside source, such as private equity or venture capital, in order to be eligible for the Community License.

Have questions? Contact us at sales@luckypennysoftware.com.

Frequently asked questions

Instead paying for a license per developer or per seat, our one license covers your entire team/organization. No need to buy additional licenses as your team grows!

Credit cards, PayPal, Apple Pay, Google Pay, Wire Transfers/ACH, and several country-specific options.

In the checkout dialog, you'll first enter your country and postal code. If your country participates in VAT, you'll have a link on the payment screen to 'Add VAT number' which will allow you to add your VAT and company details.

VAT will then be removed in cases where it doesn't apply.

Yes! When you pay via invoice, you may make payment via online payment or ACH/wire transfer.

Please request a quote/invoice to get started.

Yes! ACH and wire transfer are available when paying via invoice.

Please request a quote/invoice to get started.

Yes! In this model, payments and invoices are directed to the reseller/distributor and licenses delivered directly to the end user.

Please fill out the reseller/distributor request form to get started.

If your clients do not have any developers, the team size is your agency's team size. The Community edition would only apply if your client would also qualify.

If you mix your team with your client's team, your client will need to procure a license for their team.

License key enforcement is completely self-contained in the libraries. There is no license server or network access for license checks.

License enforcement is through warning/error log messages. There no artificial runtime limits based on missing, expired, or invalid license keys. We trust our users!