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Top 23 PHP Calendar Projects
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Leantime
Leantime is a goals focused project management system for non-project managers. Building with ADHD, Autism, and dyslexia in mind.
Project mention: Leantime: Project management, built with ADHD, Autism, and dyslexia in mind | news.ycombinator.com | 2026-07-13 -
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EspoCRM is older and less visually flashy, but it's the one I've seen hold up best in situations that require genuine customization. PHP, GPL/commercial dual license, entity manager that lets you build custom objects and relationships through the UI without writing code. The underlying philosophy is different from Twenty: rather than being a clean replacement for a specific SaaS CRM, it's a platform you can shape to your domain model.
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This package is a maintained fork of markuspoerschke/iCal and continues development with support for the latest PHP versions (8.1–8.4). It's already used as part of the OpenCal scheduling system but is fully standalone and easy to integrate into any project.
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Moment.php
Parse, validate, manipulate, and display dates in PHP w/ i18n support. Inspired by moment.js
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The Period library that started my curiosity provides a nicer way way of working with periods, but PHP also provides a DatePeriod class.
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Project mention: Office.eu launches as Europe's sovereign office platform | news.ycombinator.com | 2026-03-15
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calendar
📅 PHP Date & Time library that solves common problems in object oriented, immutable way. (by aeon-php)
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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.
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php-calendar
A simple PHP class to generate calendars. Easy to populate, the calendar shows events by passing in an array.
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go-calendar
A community driven auto-updating Pokémon GO events calendar that you can subscribe to in any calendar app on your phone/PC. Powered by Leek Duck.
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davical
Docker container with a complete DAViCal server (davical + apache + postgresql) with (optional) HTTPS support.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
PHP Calendar discussion
PHP Calendar related posts
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The Community Template feature is now live on DAKboard!
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Twitter feed stopped working
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Brixen Bouldering WC Live Chat
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DAKboard Feature Poll Survey
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I made a better IFSC competition calendar you can subscribe to.
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Agenda Style - "enable background colors on individual events"
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A note from our sponsor - SaaSHub
www.saashub.com | 15 Jul 2026
Index
What are some of the best open-source Calendar projects in PHP? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Leantime | 10,252 |
| 2 | EspoCRM | 3,139 |
| 3 | opening-hours | 1,722 |
| 4 | period | 1,696 |
| 5 | iCal | 1,173 |
| 6 | Moment.php | 967 |
| 7 | AgenDAV | 807 |
| 8 | period | 733 |
| 9 | icalendar-generator | 688 |
| 10 | agorakit | 451 |
| 11 | egroupware | 294 |
| 12 | groupoffice | 271 |
| 13 | calendar | 206 |
| 14 | DAKboard | 183 |
| 15 | webcalendar | 172 |
| 16 | php-calendar | 99 |
| 17 | nova-calendar | 96 |
| 18 | go-calendar | 66 |
| 19 | icalparser | 61 |
| 20 | CLDR | 47 |
| 21 | ifsc-calendar | 45 |
| 22 | dcter | 33 |
| 23 | davical | 4 |
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