/Companies

NationBuilder

Founded 2009 · 96 employees on LinkedIn · 6 known investors

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NationBuilder provides software infrastructure that enables individuals and organizations to mobilize and lead their communities toward action. The platform serves a diverse base of customers ranging from first-time community leaders to political parties, major charities, and Fortune 500 companies across 110+ countries.

Founders & leadership

NationBuilder was founded in 2009 by Jim Gilliam and Joe Green.

JGJim Gilliam
Jim GilliamFounder & CEOJim Gilliam founded NationBuilder, a platform for organizing and mobilizing communities, and previously co-founded Brave New Films, where he produced documentaries and helped build a grassroots media organization.
JGJoe Green
Joe GreenCofounder, PresidentJoe Green co-founded NationBuilder, a community organizing software platform, and previously co-founded Causes, an impact-focused social network. He also co-founded FWD.us, an organization focused on immigration and criminal justice reform, and serves as co-founder and chairman of Treehouse, a communal housing organization in Los Angeles.30 Under 30 2013

Investors · 6

Funding

SEC filings, press & company announcements

Source: company announcements and press reports — follow each round's link for the claim.

Company profile

researched Aug 2026

NationBuilder offers a software platform that organizations use to build supporter communities and move them to action. The product set combines a dynamic people database for managing supporter records, a hosted website builder oriented toward action-taking, email and text messaging outreach tools, payment processing and fundraising features for handling donations, and advocacy-specific functionality including a tool called ActionButton.

The platform is positioned for a range of organization types, with dedicated use cases for running a nonprofit, powering advocacy work, winning an election and building a brand. Published customer examples span refugee advocacy, marriage-equality campaigning, humanitarian service delivery, financial-services consumer advocacy, electoral reform, climate organizing, disarmament campaigning and taxpayer-advocacy groups, including Refugee Council of Australia, Humanity & Inclusion, Wise, ICAN, FairVote, Mothers Out Front, New Zealand Taxpayers' Union, Amnesty Kenya, Democrats Abroad and Primaire Populaire.

Business model

NationBuilder licenses its software to organizations, which sign up via free trials or sales demos and use the platform to manage supporters, run websites, send email and text outreach, and process donations and fundraising payments.

Traction

Referenced customer outcomes include a campaign of 13,000 advocates for price transparency in international payments, a supporter community of 20,000 for a rural women's education initiative, ICAN reaching 50 treaty ratifications, and a tripling of fundraising for one nonprofit customer.

▸Full profile — technology, go-to-market, geography

Technology

A hosted software platform combining a supporter/people database, website builder, email and SMS communication tools, integrated payment processing, and advocacy features such as ActionButton.

Go-to-market

Self-service onboarding through a free trial with setup described as taking 15 minutes or less, alongside a sales-led motion built around booking demos; customer case studies and a content blog support acquisition.

Nonprofits, advocacy organizations, political campaigns and candidates, movements and mission-driven brands, ranging from small local groups and small businesses to international NGOs.

Geography

Customers and campaigns referenced across multiple regions, including the United States, the United Kingdom, Australia, New Zealand, Switzerland, France, Kenya and Lebanon, with one customer operating in 55 countries.

Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
HeadcountAug 202696

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

In the news

▸Research sources · 1

primary sources listed

1 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does NationBuilder do?
NationBuilder sells community-organizing software for nonprofits, advocacy groups, political campaigns and brands.
Who founded NationBuilder?
NationBuilder was founded by Jim Gilliam, Joe Green in 2009.
Who are NationBuilder's investors?
NationBuilder's investors include Andreessen Horowitz, Partners for Growth, Partners for Growth (PFG), Runway Growth Capital, Slow Ventures, SV Angel.