Best Open Source Marketing & Growth Tools in 2026

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Open Source Alternatives

Ghost

stars 54.2Kforks 11.8K

Launch a newsletter or paid membership site on your own server

Blogging CMS Headless CMS+5

Postiz

stars 31.8Kforks 5.9K

Schedule content on 20+ social networks with AI writing support

Social Media Workflow Automation AI Agents+5

PostHog

stars 35.4Kforks 2.9K

Track events, replay sessions, and run A/B tests, self-hostable

Web Analytics A/B Testing Feature Flag+5

Gumroad

stars 9.4Kforks 2K

Open source platform for selling digital products directly

Marketplace Payment Infrastructure Invoicing & Payments+3

Matomo

stars 21.6Kforks 2.9K

Self-hosted Google Analytics alternative, 100% data ownership

Web Analytics Self Hosted Privacy Tools+3

Drupal

stars 4.3Kforks 2K

Open source CMS for enterprise and complex digital experiences

CMS Headless CMS Self Hosted+4

Mautic

stars 9.8Kforks 3.3K

Self-hosted marketing automation with email and campaigns

Email Workflow Automation Self Hosted+3

Craft CMS

stars 3.6Kforks 698

Flexible developer-friendly CMS for content teams

CMS Headless CMS Self Hosted+4

Kutt

stars 11Kforks 1.5K

Self-hosted URL shortener with analytics and custom domains

Link Management & Shorteners Self Hosted Web Analytics+2

Swetrix

stars 1Kforks 58

GDPR-compliant cookieless analytics with real-time dashboards

Web Analytics Self Hosted Privacy Tools+4

Prisme Analytics

stars 125forks 2

Privacy-first open source web analytics with no cookies

Web Analytics Data Visualization Privacy Tools+3

EspoCRM

stars 3.1Kforks 894

Self-hosted open source CRM for contacts and pipelines

CRM Self Hosted Sales Automation+5

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