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6 jobs · 19 apps

Best open source software for agencies and marketing teams

For an agency or marketing team, a self-hosted stack starts with WordPress for client websites, Postiz for social scheduling and Listmonk for email campaigns.

An agency stack for client websites, social scheduling, email campaigns, analytics, client management and design, all self-hostable so each client's data can live on servers you control.

Updated · data from GitHub, refreshed daily

Top picks

  1. Rank 1:

    WordPress

    WordPress/WordPress

    World's most-used blogging and CMS engine.

    Active · last commit Oct 28, 2026

    CMSPHP

    Stands out for an appsgit step-by-step deploy guide. WordPress has 21,509 GitHub stars, uses the GPL-2.0 license and had 2,760 commits in the last year; it replaces WordPress.com and Webflow.

  2. Rank 2:

    Ghost

    TryGhost/Ghost

    Just a blogging platform.

    Active · last commit Oct 28, 2026

    Blogging PlatformsTypeScript

    Stands out for the most commits in the last 12 months (6,762). Ghost has 55,626 GitHub stars, uses the MIT license and had 6,762 commits in the last year; it replaces Medium.

  3. Rank 3:

    Strapi

    strapi/strapi

    Headless CMS that lets developers build content APIs fast while giving content creators a friendly editing interface.

    Active · last commit Oct 28, 2026

    CMSTypeScript

    Stands out for the most GitHub stars. Strapi has 73,390 GitHub stars, uses the MIT license and had 1,699 commits in the last year; it replaces WordPress.com and Webflow.

At a glance

Open source software for agencies and marketing teams compared

Picked by hand for each job from apps whose own description or topics match it, in curated order inside each section, with GitHub data from October 2026; an app appears only once.

Top 10 picks compared, data as of Oct 28, 2026
AppStands out forLicenseGitHub starsCommits (12 mo)Last commitDocker image
WordPressan appsgit step-by-step deploy guideGPL-2.021,5092,760Oct 28, 2026No
Ghostthe most commits in the last 12 months (6,762)MIT55,6266,762Oct 28, 2026No
Strapithe most GitHub starsMIT73,3901,699Oct 28, 2026No
Payload CMSa permissive MIT licenseMIT45,5491,884Oct 27, 2026No
Postizthe newest codebase (created July 2023)AGPL-3.039,7081,517Oct 24, 2026Yes
Socioboard–GPL-3.01,5238Oct 17, 2026No
Listmonk–AGPL-3.024,011463Oct 28, 2026Yes
Mautic–GPL-3.010,8566,380Oct 27, 2026No
Keila–AGPL-3.02,255442Oct 27, 2026Yes
Umami–MIT39,7421,417Oct 27, 2026Yes

1 of 6 · 4 picks

Websites

  1. 1

    WordPress

    World's most-used blogging and CMS engine.

    Stands out for an appsgit step-by-step deploy guide. WordPress has 21,509 GitHub stars, uses the GPL-2.0 license and had 2,760 commits in the last year; it replaces WordPress.com and Webflow.

  2. 2

    Ghost

    Just a blogging platform.

    Stands out for the most commits in the last 12 months (6,762). Ghost has 55,626 GitHub stars, uses the MIT license and had 6,762 commits in the last year; it replaces Medium.

  3. 3

    Strapi

    Headless CMS that lets developers build content APIs fast while giving content creators a friendly editing interface.

    Stands out for the most GitHub stars. Strapi has 73,390 GitHub stars, uses the MIT license and had 1,699 commits in the last year; it replaces WordPress.com and Webflow.

  4. 4

    Payload CMS

    Developer-first headless CMS and application framework.

    Stands out for a permissive MIT license. Payload CMS has 45,549 GitHub stars, uses the MIT license and had 1,884 commits in the last year; it replaces Webflow.

2 of 6 · 2 picks

Social media scheduling

  1. 1

    Postiz

    Schedule posts, track the performance of your content, and manage all your social media accounts in one place (Alternative to Buffer, Hootsuite, Sprout Social).

    Stands out for the newest codebase (created July 2023). Postiz has 39,708 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 1,517 commits in the last year.

  2. 2

    Socioboard

    Social media management, analytics, and reporting platform supporting nine social media networks out-of-the-box.

    Socioboard has 1,523 GitHub stars, uses the GPL-3.0 license and had 8 commits in the last year.

3 of 6 · 3 picks

Email marketing

  1. 1

    Listmonk

    High performance, self-hosted newsletter and mailing list manager with a modern dashboard.

    Listmonk has 24,011 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 463 commits in the last year; it replaces Mailchimp and Substack.

  2. 2

    Mautic

    Marketing automation software (email, social and more).

    Mautic has 10,856 GitHub stars, uses the GPL-3.0 license and had 6,380 commits in the last year; it replaces Mailchimp and Substack.

  3. 3

    Keila

    Reliable and easy-to-use newsletter tool (alternative to Mailchimp and Sendinblue).

    Keila has 2,255 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 442 commits in the last year; it replaces Mailchimp and Substack.

4 of 6 · 3 picks

Analytics

  1. 1

    Umami

    Simple, fast, privacy-focused alternative to Google Analytics.

    Umami has 39,742 GitHub stars, uses the MIT license, ships a Docker image and had 1,417 commits in the last year; it replaces Google Analytics.

  2. 2

    Plausible Analytics

    Simple, lightweight (< 1 KB) and privacy-friendly web analytics.

    Plausible Analytics has 29,700 GitHub stars, uses the AGPL-3.0 license and had 618 commits in the last year; it replaces Google Analytics.

  3. 3

    Matomo

    Web analytics that protects your data and your customers' privacy (alternative to Google Analytics).

    Matomo has 21,984 GitHub stars, uses the GPL-3.0 license and had 1,034 commits in the last year; it replaces Google Analytics.

5 of 6 · 4 picks

Clients, time and invoices

  1. 1

    Twenty

    A modern CRM offering the flexibility of open source, advanced features, and a sleek design.

    Twenty has 59,965 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 9,000 commits in the last year; it replaces Salesforce and HubSpot.

  2. 2

    Kimai

    Track work time and print out a summary of your activities on demand.

    Kimai has 5,103 GitHub stars, uses the AGPL-3.0 license and had 260 commits in the last year.

  3. 3

    solidtime

    Modern time tracking application for freelancers and agencies.

    solidtime has 9,053 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 468 commits in the last year.

  4. 4

    Invoice Ninja

    Powerful tool to invoice clients online.

    Invoice Ninja has 10,331 GitHub stars, is source-available under the Elastic License 2.0 (not an open-source license), ships a Docker image and had 2,250 commits in the last year; it replaces QuickBooks and Xero.

6 of 6 · 3 picks

Design and sign-off

  1. 1

    penpot

    Web-based design and prototyping platform meant for cross-domain teams.

    penpot has 61,776 GitHub stars, uses the MPL-2.0 license, ships a Docker image and had 5,322 commits in the last year; it replaces Figma and Canva.

  2. 2

    Excalidraw

    Virtual hand-drawn style whiteboard for diagrams and sketches.

    Excalidraw has 134,690 GitHub stars, uses the MIT license, ships a Docker image and had 285 commits in the last year; it replaces Figma and Lucidchart.

  3. 3

    Docuseal

    Create, fill, and sign digital documents (alternative to DocuSign).

    Docuseal has 18,873 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 1,013 commits in the last year; it replaces DocuSign and Adobe Acrobat.

FAQ

Questions and answers

Still curious? Email info@appsgit.com.

Can one install serve many clients?

Some apps support several sites or workspaces in one install, others are easier to run once per client. Separate installs cost more server resources but keep each client's data apart.

Is WordPress free?

Yes. WordPress is open-source software released under the GPL-2.0 license, so you can self-host it at no cost. You only pay for the server it runs on, and some projects also offer an optional paid cloud plan.

Can I run this stack with Docker?

10 of the 19 apps here publish Docker images, including Postiz, Listmonk and Keila, so most of the stack can run side by side with Docker Compose on one server. Size the server for the heaviest app and add off-site backups.

How is this list ranked?

Picked by hand for each job from apps whose own description or topics match it, in curated order inside each section, with GitHub data from October 2026; an app appears only once.

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