The 50 best open-source alternatives to popular SaaS software

1. OpenSign

   1 38 4,625 9.7 JavaScript

   🔥 The free & Open Source DocuSign alternative

   

   GitHub: OpenSign GitHub Repository

2. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. Zulip

   2 135 22,853 10.0 Python

   Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

   

   GitHub: Zulip GitHub Repository

4. OpenProject

   3 73 11,044 10.0 Ruby

   OpenProject is the leading open source project management software.

   

   GitHub: OpenProject GitHub Repository

5. Zammad

   4 54 4,826 9.9 Ruby

   Zammad is a web based open source helpdesk/customer support system

   

6. phpList

   5 5 787 2.8 PHP

   Fully functional Open Source email marketing manager for creating, sending, integrating, and analysing email campaigns and newsletters.

   

   GitHub: phpList GitHub Repository

7. Wekan

   6 85 20,266 9.8 JavaScript

   The Open Source kanban (built with Meteor). Keep variable/table/field names camelCase. For translations, only add Pull Request changes to wekan/i18n/en.i18n.json , other translations are done at https://app.transifex.com/wekan/wekan only.

   

8. OpenCart

   7 28 7,788 10.0 PHP

   A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.

   

   GitHub: OpenCart GitHub Repository

9. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

10. Joomla!

    8 33 4,918 9.9 PHP

    Home of the Joomla! Content Management System

    

    GitHub: Joomla GitHub Repository

11. Odoo

    9 163 42,973 10.0 Python

    Odoo. Open Source Apps To Grow Your Business.

    

    GitHub: Odoo GitHub Repository

12. Ghost

    10 329 49,256 10.0 JavaScript

    Independent technology for modern publishing, memberships, subscriptions and newsletters.

    

    GitHub: Ghost GitHub Repository

13. Mautic

    11 34 8,114 10.0 PHP

    Mautic: Open Source Marketing Automation Software.

    

    GitHub: Mautic GitHub Repository

14. LibreOffice

    12 593 3,100 10.0 C++

    Read-only LibreOffice core repo - no pull request (use gerrit instead https://gerrit.libreoffice.org/) - don't download zip, use https://dev-www.libreoffice.org/bundles/ instead (by LibreOffice)

    

    GitHub: LibreOffice GitHub Repository

15. Keycloak

    13 267 27,198 10.0 Java

    Open Source Identity and Access Management For Modern Applications and Services

    

    GitHub: Keycloak GitHub Repository

16. Nextcloud

    14 629 29,533 10.0 PHP

    ☁️ Nextcloud server, a safe home for all your data

    

    GitHub: Nextcloud GitHub Repository

17. DOLIBARR ERP & CRM

    15 31 6,083 10.0 PHP

    Dolibarr ERP CRM is a modern software package to manage your company or foundation's activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...). it's an open source Web application (written in PHP) designed for businesses of any sizes, foundations and freelancers.

    

    GitHub: Dolibarr GitHub Repository

18. Rocket.Chat

    16 123 42,639 10.0 TypeScript

    The communications platform that puts data protection first.

    

    GitHub: Rocket.Chat GitHub Repository

19. Redash

    17 41 27,315 8.8 Python

    Make Your Company Data Driven. Connect to any data source, easily visualize, dashboard and share your data.

    

    GitHub: Redash GitHub Repository

20. osTicket

    18 69 3,393 8.4 PHP

    The osTicket open source ticketing system official project repository, for versions 1.8 and later

    

    GitHub: osTicket GitHub Repository

21. Moodle

    19 84 6,147 10.0 PHP

    Moodle - the world's open source learning platform

    

    GitHub: Moodle GitHub Repository

22. Matomo

    20 157 20,515 9.8 PHP

    Empowering People Ethically 🚀 — Matomo is hiring! Join us → https://matomo.org/jobs Matomo is the leading open-source alternative to Google Analytics, giving you complete control and built-in privacy. Easily collect, visualise, and analyse data from websites & apps. Star us on GitHub ⭐️ – Pull Requests welcome!

    

    GitHub: Matomo GitHub Repository

23. Gogs

    21 71 46,362 8.5 Go

    Gogs is a painless self-hosted Git service

    

    GitHub: Gogs GitHub Repository

24. GoAccess

    22 84 19,337 9.2 C

    GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through your browser.

    

    GitHub: GoAccess GitHub Repository

25. botpress

    23 7 13,669 9.8 TypeScript

    The open-source hub to build & deploy GPT/LLM Agents ⚡️

    

    GitHub: Botpress GitHub Repository

26. Taiga

    24 22 5,825 0.0 Python

    Discontinued Agile project management platform. Built on top of Django and AngularJS

    

    GitHub: Taiga GitHub Repository

27. Redmine

    25 4 5,605 9.8 Ruby

    Mirror of redmine code source - Official Subversion repository is at https://svn.redmine.org/redmine - contact: @vividtone or maeda (at) farend (dot) jp

    

    GitHub: Redmine GitHub Repository

28. WordPress

    26 952 20,155 9.9 PHP

    WordPress, Git-ified. This repository is just a mirror of the WordPress subversion repository. Please do not send pull requests. Submit pull requests to https://github.com/WordPress/wordpress-develop and patches to https://core.trac.wordpress.org/ instead.

    

    GitHub: WordPress GitHub Repository

29. Drupal

    27 2 4,153 9.7 PHP

    Verbatim mirror of the git.drupal.org repository for Drupal core. Please see the https://github.com/drupal/drupal#contributing. PRs are not accepted on GitHub.

    

    GitHub: Drupal GitHub Repository

30. ONLYOFFICE

    28 178 5,438 7.6 Shell

    ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts, spreadsheets and presentations, forms and PDF, fully compatible with Office Open XML formats: .docx, .xlsx, .pptx and enabling collaborative editing in real time.

    

    Website: ONLYOFFICE

31. SuiteCRM

    29 12 4,843 6.9 PHP

    SuiteCRM - Open source CRM for the world

    

    GitHub: SuiteCRM GitHub Repository

32. EspoCRM

    30 13 2,215 9.9 PHP

    EspoCRM – Open Source CRM Application

    

    GitHub: EspoCRM GitHub Repository

33. civicrm-core

    31 2 644 10.0 PHP

    CiviCRM (Core Application and Framework)

    

    GitHub: CiviCRM GitHub Repository

34. ownCloud

    32 11 8,523 9.2 PHP

    :cloud: ownCloud web server core (Files, DAV, etc.) (by owncloud)

    

    GitHub: ownCloud GitHub Repository

35. Seafile

    33 13 13,078 7.7 C

    High performance file syncing and sharing, with also Markdown WYSIWYG editing, Wiki, file label and other knowledge management features.

    

    GitHub: Seafile GitHub Repository

36. mattermost-server

    34 1 28,616 - TypeScript

    Discontinued Mattermost is an open source platform for secure collaboration across the entire software development lifecycle.. [Moved to: https://github.com/mattermost/mattermost]

    

    GitHub: Mattermost GitHub Repository

37. Jitsi Meet

    35 34 25,513 9.9 TypeScript

    Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

    

    GitHub: Jitsi GitHub Repository

38. Mattermost

    36 166 32,536 10.0 TypeScript

    Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

    

    Website: Mattermost

39. Magento

    37 54 11,798 10.0 PHP

    Prior to making any Submission(s), you must sign an Adobe Contributor License Agreement, available here at: https://opensource.adobe.com/cla.html. All Submissions you make to Adobe Inc. and its affiliates, assigns and subsidiaries (collectively “Adobe”) are subject to the terms of the Adobe Contributor License Agreement.

    

    GitHub: Magento GitHub Repository

40. PrestaShop

    38 11 8,558 10.0 PHP

    PrestaShop is the universal open-source software platform to build your e-commerce solution.

    

    GitHub: PrestaShop GitHub Repository

41. corteza-server

    39 2 628 10.0 Go

    Discontinued Low-code platform [Moved to: https://github.com/cortezaproject/corteza]

    

    GitHub: Corteza GitHub Repository

42. Corteza

    40 9 1,788 9.5 Go

    Low-code platform

    

    Website: Corteza

43. Metabase

    41 82 41,970 10.0 Clojure

    The easy-to-use open source Business Intelligence and Embedded Analytics tool that lets everyone work with data :bar_chart:

    

    GitHub: Metabase GitHub Repository

44. Gitlab CI

    42 6 23,974 9.9 Ruby

    GitLab CE Mirror | Please open new issues in our issue tracker on GitLab.com

    

    GitHub: GitLab GitHub Repository

45. Jenkins

    43 191 23,968 9.9 Java

    Jenkins automation server

    

    GitHub: Jenkins GitHub Repository

46. drone

    44 2 24,567 8.9 Go

    Discontinued Drone is a Container-Native, Continuous Delivery Platform [Moved to: https://github.com/harness/drone] (by drone)

    

    GitHub: Drone GitHub Repository

47. CloudStack

    45 2 2,352 9.9 Java

    Apache CloudStack is an opensource Infrastructure as a Service (IaaS) cloud computing platform

    

    GitHub: CloudStack GitHub Repository

48. GnuCash

    46 117 3,753 9.6 C

    GnuCash Double-Entry Accounting Program.

    

    GitHub: GnuCash GitHub Repository

49. edx-platform

    47 1 1 -

    

    GitHub: Open edX GitHub Repository

50. ERPNext

    48 86 24,992 10.0 Python

    Free and Open Source Enterprise Resource Planning (ERP)

    

    GitHub: ERPNext GitHub Repository

51. Nagios

    49 8 1,675 8.0 C

    Nagios Core

    

    GitHub: Nagios GitHub Repository

52. Zabbix

    50 73 4,900 9.9 PHP

    Real-time monitoring of IT components and services, such as networks, servers, VMs, applications and the cloud.

    

    GitHub: Zabbix GitHub Repository

53. SaaSHub

    www.saashub.com featured

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    

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