Say Hello to Muster 👋

The easiest way for nonprofits, associations, and more to rally their supporters and impact public policy. Our best-in-class grassroots advocacy solutions are backed by industry leading support. 

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Precision Advocacy Made Easy For All.

At Muster, our mission is to build solutions that make it easy for organizations to harness the voice of their supporters and put it into action. We back that up with intuitive tools and workflows, industry-leading support, and a personal touch every step of the way.


Muster is owned by the team that powers it. Everything starts with how we value our employees. This drives us all to be invested in the success of our customers.


We want our customers to feel like they have a partner in our team. That's why we provide industry-leading support and tools that make your advocacy and government relations work easier.


Our product is worthless if we can't help you make an impact, and with over 10 years of experience, our team has built systems to ensure your advocate messages get where they need to be.

What Our Customers Say About Muster.

Since switching, we have been more than happy with the choice. Muster is extremely easy to use and generates a great published product, rendering a 75% increase in the number of people who send a message after landing on the messaging page. That, combined with their extremely reasonable pricing leads us to recommend them to anyone looking for a fabulous grassroots provider.

Muster is a great overall value. It provides us with everything we need in strategic grassroots advocacy software. Muster takes it to the next level by better informing our Congressional engagements, providing us analysis on which districts receive our correspondence. This allows us to tailor our messaging and make in-roads with members whom we may not have had prior relationships with.

Muster’s District Impact Reports enable us to tell our industry’s story at the federal, state, and local levels in an effective, concise way. We have heard from policymakers across the country that our Impact Reports are one of the most valuable pieces of information we can share with them. We’re glad we made the switch, because the team at Muster is hands down one of the best vendors we work with!