Best Open Source Calendar Software 2025

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

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Easy-to-Use Website Accessibility Widget
An accessibility solution for quick website accessibility improvement.

All in One Accessibility is an AI based accessibility tool that helps organizations to enhance the accessibility and usability of websites quickly.

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1

Gerenciador de Tarefas e Projetos

Web based task management software, written with django. Its based on trac/redmine and aims to manage projects, tasks, hours of work, documentation and code of a company or any kind of group.

1 Review

Downloads: 0 This Week

Last Update: 2015-04-14
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2

Ice Coral - TimeSpan

Scheduled task and device event evidence

This is a part of the Ice Coral project. The TimeSpan is focused on event evidence, for example scheduled tasks (Windows Task Scheduler, crond). For more info visit Ice Coral - TimeSpan Web Site.

Downloads: 0 This Week

Last Update: 2012-07-13
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3

Ordinatus

Time and project management for personal use.

Downloads: 0 This Week

Last Update: 2018-01-22
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4

xartnote

XartNote is a diary, note and journal tool.

XartNote is an open source diary, note and journal tool. Written in php, fully compatible with linux and windows (other platforms are available, but not tested), without database required. Support rich text format, support images, support tags, support multi-language, support template.

1 Review

Downloads: 0 This Week

Last Update: 2021-07-26
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The All-in-One Commerce Platform for Businesses - Shopify
Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.

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