Open Source Marketing Automation Projects

Platforms for automating marketing workflows, lead nurturing, and multi-channel campaign management.

Chronex

Self-hostable social media scheduler for content creators and small teams with distributed job processing.

Alternative to:

Buffer

CloudMeet

Open source Calendly alternative that runs on Cloudflare’s free tier with Google Calendar and Outlook sync.

Alternative to:

Calendly

Dittofeed

Open-source customer engagement. Automate transactional and marketing messages across email, SMS, mobile push, WhatsApp, Slack, and more 📨

Alternative to:

customer.io

Forms.md

Developer-first open source Typeform alternative (formerly Blocks.md) with Markdown-defined forms and native Google Sheets integration.

Alternative to:

Typeform

Mautic

Open-source marketing automation platform with email campaigns, lead management, and multi-channel marketing.

Alternative to:

HubSpot

Postiz

Open-source social media scheduler with AI assistance, cross-platform posting, and team collaboration — self-hostable alternative to Buffer and Hootsuite.

Alternative to:

Buffer

Quill Forms

Open source React-based Typeform alternative for building conversational multi-step forms, surveys, and quizzes.

Alternative to:

Typeform

Someday

Free, self-hostable meeting scheduler built on Google Apps Script — a Cal.com and Calendly alternative for Gmail users.

Alternative to:

Calendly

TellForm

Open source Typeform and Google Forms alternative for building beautiful conversational forms and surveys.

Alternative to:

Typeform

TryPost

Open-source social media scheduling platform — a self-hosted alternative to Buffer, Hootsuite, and Later for agencies and creators.

Alternative to:

Buffer