Best Open Source PHP Calendar Software

PHP Calendar Software

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Browse free open source PHP Calendar Software and projects below. Use the toggles on the left to filter open source PHP Calendar Software by OS, license, language, programming language, and project status.

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1

Vtiger CRM

An enterprise-class CRM and more!

Vtiger CRM enables sales, support, and marketing teams to organize and collaborate to measurably improve customer experiences and business outcomes. Vtiger CRM also includes email, inventory, project management, and other tools, providing a complete the business management suite. Download Vtiger CRM here or sign up for a free 15-day free trial of the cloud-based application with free updates and support at https://www.vtiger.com/

91 Reviews

Downloads: 680 This Week

Last Update: 2025-07-09
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2

WebCalendar

Project has moved to github: https://github.com/craigk5n/webcalendar WebCalendar is a PHP application used to maintain a calendar for a single user or an intranet group of users. It can also be configured as an event calendar.

53 Reviews

Downloads: 23 This Week

Last Update: 2023-10-02
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3

OpenIT

PHP driven Inventory, HelpDesk, Support, Issue Tracking, and Knowledge Base web application. Focuses on simplicity and ease of customization. Sort of a mini-Directory solution for SMBs using PHP and any Pear::DB supported database.

4 Reviews

Downloads: 0 This Week

Last Update: 2013-04-25
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4

NetOffice E.I.S.

NETOFFICE EIS: CRM/SRM Corporate AddressBook ; iCAL Corporate Calendar + Agenda ; eMSG MailBox Email + Fax Messagery ; DMS FileManager + Document Management ; EXTM ModExpress (modules / extra apps: financial, sales) ; CPanel administration ; Intercha

3 Reviews

Downloads: 0 This Week

Last Update: 2013-04-11
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