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Open Source Marketing Automation Tools using CSS

A curated collection of the best open source platforms for automating marketing tasks and managing leads. using CSS.

Postiz

Schedule, analyze, and manage 30+ social media accounts

  • Stars

    Stars growing over the last 30 days37,429

  • Last commit

    6 hours ago

  • License

    AGPL-3.0
Self-hostable social media scheduler that lets you plan, generate, and publish content across 30+ networks with AI assistance, team collaboration, and automation integrations.

Open Source Alternative to:

Post Bridge

Krayin

Self-hosted CRM for enhanced business relationships

  • Stars

    24,029

  • Last commit

    4 days ago

  • License

    MIT
Open source customer relationship management platform with sales tracking, marketing automation, and customizable workflows for businesses of all sizes.

Open Source Alternative to:

Salesforce

Listmonk

Self-hosted newsletter and mailing list manager

  • Stars

    23,871

  • Last commit

    8 hours ago

  • License

    AGPL-3.0
Send email campaigns and transactional messages to millions of subscribers with a single high-performance binary backed by Postgres.

Open Source Alternative to:

Substack

Mautic

Open source marketing automation for everyone

  • Stars

    10,806

  • Last commit

    7 hours ago

  • License

    Unknown
Mautic is a free and open source marketing automation platform that helps businesses manage leads, create campaigns, and analyze results.

Open Source Alternative to:

HubSpot

Erxes

Open-source growth platform for customer-centric teams

  • Stars

    4,092

  • Last commit

    6 hours ago

  • License

    AGPL-3.0
All-in-one solution for marketing, sales, and customer service. Boost engagement, streamline workflows, and drive growth.

Open Source Alternative to:

Salesforce

Dittofeed

Open-source customer engagement platform for automation

  • Stars

    3,014

  • Last commit

    8 days ago

  • License

    MIT
Dittofeed offers low-code tools for message automation across multiple channels, including powerful segmentation and personalization features.

Open Source Alternative to:

Mailchimp

Notifuse

Self-hosted email platform with visual editor & analytics

  • Stars

    2,251

  • Last commit

    7 hours ago

  • License

    AGPL-3.0
Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.

Open Source Alternative to:

Resend

Keila

Open-source email marketing for the privacy-conscious

  • Stars

    2,238

  • Last commit

    18 days ago

  • License

    AGPL-3.0
Self-hosted newsletter platform with powerful features, data protection, and full control over your mailing lists and campaigns.

Open Source Alternative to:

Substack
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