Open Source Marketing Apps

Self-hosted email server and marketing platform that gives you unlimited sending, full deliverability control, and AI-assisted campaigns without monthly fees.

Privacy-first, self-hosted analytics and customer engagement platform with full data ownership, GDPR compliance, and AI-powered insights across mobile, web, desktop, and IoT.

Open-source omni-channel customer engagement platform for automating transactional and marketing messages via email, SMS, WhatsApp, Slack, and mobile push.

The open-source link attribution platform for short links, conversion tracking, and affiliate programs — powering 100M+ clicks monthly.

Open-source CRM platform with metadata-driven customization, field-level permissions, and a full REST API — deploy on your own infrastructure.

Open-source experience management platform for in-app, website, email, and link surveys — privacy-first and fully self-hostable.

Self-hosted newsletter platform with a visual block editor, Liquid personalization, and flexible email delivery — a privacy-respecting Mailchimp alternative you run on your own infrastructure.

Self-hosted URL shortener with custom domains, per-link analytics, and zero build step required.

Open-source customer engagement platform for building visual, event-triggered messaging journeys across email, SMS, push, in-app, and webhooks.

Self-hosted, privacy-focused Linktree alternative with themes, analytics, and a drag-and-drop admin panel.

High-performance, self-hosted newsletter and mailing list manager packaged as a single binary with built-in analytics, transactional messaging, and multi-channel delivery.

The lightest self-hosted Linktree alternative — 100+ branded buttons, dark/light themes, and zero JavaScript required.

Collect customer feedback, prioritize features with upvotes, and build transparent product roadmaps — fully self-hosted and open source.

The world's largest open source marketing automation platform — own your data, run multi-channel campaigns, and escape vendor lock-in forever.

Self-host your own social media scheduler and publish to 11 platforms without subscriptions or data lock-in.

Open-source, self-hosted alternative to Mailchimp, Brevo, and Klaviyo — send newsletters and transactional emails without per-email pricing or vendor lock-in.

Send push notifications to your phone or desktop from any script or service using a single HTTP PUT or POST—no sign-up required.

Pay-as-you-go open source SEO platform with MCP integration — keyword research, rank tracking, backlinks, site audits, and AI brand visibility in one self-hosted tool.

Build unlimited, embeddable forms with no code — powered by AI, logic rules, and real-time analytics

A fully featured open-source mail delivery platform for sending and receiving email at scale — your own Mailgun, on your own servers.

Self-hosted email marketing with full data control, multi-workspace isolation, and seamless integration with Amazon SES, SendGrid, Mailgun, and more

Self-hosted SEO auditing that crawls your entire website and surfaces critical issues — broken links, duplicate meta tags, redirect loops, and more — before they hurt your rankings.

Self-hosted keyword rank tracker with Google Search Console integration, multi-provider SERP scraping, and a built-in REST API.

Self-hosted PHP URL shortener with a full REST API, dynamic redirect rules, and real-time visit analytics under your own domain.

Open-source headless eCommerce platform with a REST API, TypeScript SDK, and Next.js storefront for B2B, cross-border, and marketplace commerce — no vendor lock-in, no platform fees.

Self-hostable open source email platform built on Amazon SES with a full dashboard, SMTP relay, REST API, and multi-language SDKs.