============================================
A distilled list of open-source CRM software
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Source: https://opensource.com/business/16/2/top-6-open-source-crm-tools-2016 + community contributions

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Name          Source Code                                             Language      Home Page
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EspoCRM       `github.com/espocrm/espocrm`_                           PHP           https://www.espocrm.com
SuiteCRM      `github.com/salesagility/SuiteCRM`_                     PHP           https://suitecrm.com
Oro CRM       `github.com/orocrm/crm`_                                PHP           https://www.orocrm.com
CiviCRM       `github.com/civicrm/civicrm-core`_                      PHP           https://civicrm.org
Fat Free CRM  `github.com/fatfreecrm/fat_free_crm`_                   Ruby          http://www.fatfreecrm.com
Odoo          `github.com/odoo/odoo`_                                 Python        https://www.odoo.com
Krayin        `github.com/krayin/laravel-crm`_                        PHP (Laravel) https://krayincrm.com
Dolibarr      `github.com/Dolibarr/dolibarr`_                         PHP           https://www.dolibarr.org
Vtiger        `code.vtiger.com/vtiger/vtigercrm`_                     PHP           https://www.vtiger.com
SplendidCRM   `github.com/splendidcrm/SplendidCRM-Community-Edition`_ C#/.Net       https://splendidcrm.com
X2CRM         `github.com/X2Engine/X2CRM`_                            PHP           https://x2crm.com
Hammer CRM CE `github.com/roskus/hammercrm`_                          PHP (Laravel)
meow          `github.com/nash-md/meow`_                              TypeScript
Twenty        `github.com/twentyhq/twenty`_                           Typescript    https://twenty.com
iDURAR        `github.com/idurar/erp-crm`_ (source available)         JavaScript    https://www.idurarapp.com
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=======
Defunct
=======

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Name         Source Code                                         Language      Home Page
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Zurmo        `bitbucket.org/zurmo/zurmo`_                        PHP           http://zurmo.org
============ =================================================== ============= =========================

.. _github.com/fatfreecrm/fat_free_crm: https://github.com/fatfreecrm/fat_free_crm
.. _github.com/espocrm/espocrm: https://github.com/espocrm/espocrm
.. _github.com/salesagility/SuiteCRM: https://github.com/salesagility/SuiteCRM
.. _github.com/orocrm/crm: https://github.com/orocrm/crm
.. _github.com/civicrm/civicrm-core: https://github.com/civicrm/civicrm-core
.. _bitbucket.org/zurmo/zurmo: https://bitbucket.org/zurmo/zurmo
.. _github.com/odoo/odoo: https://github.com/odoo/odoo
.. _github.com/krayin/laravel-crm: https://github.com/krayin/laravel-crm
.. _github.com/Dolibarr/dolibarr: https://github.com/Dolibarr/dolibarr
.. _code.vtiger.com/vtiger/vtigercrm: https://code.vtiger.com/vtiger/vtigercrm
.. _github.com/splendidcrm/SplendidCRM-Community-Edition: https://github.com/splendidcrm/SplendidCRM-Community-Edition
.. _github.com/X2Engine/X2CRM: https://github.com/X2Engine/X2CRM
.. _github.com/roskus/hammercrm: https://github.com/roskus/hammercrm
.. _github.com/nash-md/meow: https://github.com/nash-md/meow
.. _github.com/twentyhq/twenty: https://github.com/twentyhq/twenty
.. _github.com/idurar/erp-crm: https://github.com/idurar/erp-crm