Open Source Software Directory

Cal.diy

> [!WARNING] > Use at your own risk. Cal.diy is the open source community edition of Cal.com and it is intended for users who want to self-host their own Cal.diy instance. It is... Read More

45.3K stars open source

Calendar & Scheduling Booking & Scheduling

QloApps

QloApps - An open source and free platform to launch your own hotel booking website ## Topics - [Topics](#topics) - [Introduction](#introduction) - [R... Read More

13.4K stars open source

Booking & Scheduling

Easy!Appointments

Easy!Appointments A powerful, self-hosted appointment scheduling platform built for flexibility. Why Easy!... Read More

4.2K stars open source

Calendar & Scheduling Booking & Scheduling

Hi.Events

# Hi.Events ### Open-source event ticketing and management platform Sell tickets online for conferences, nightlife events, concerts, club nights, workshops, and festivals.... Read More

3.9K stars open source

E-commerce Platforms Booking & Scheduling

indico

# Indico ![CI Status](https://github.com/indico/indico/workflows/CI/badge.svg) [![License](https://img.shields.io/github/license/indico/indico.svg)](https://github.com/indico/indic... Read More

2.1K stars open source

Video Conferencing Booking & Scheduling

Alf.io

alf.io ======== The open source ticket reservation system. Alf.io ([[ˈalfjo]]( is a free and open source event attendance management system, developed for event organizers who care... Read More

1.6K stars open source

Booking & Scheduling

pretalx

.. SPDX-FileCopyrightText: 2017-present Tobias Kunze .. SPDX-License-Identifier: Apache-2.0 |logo| .. image:: https://img.shields.io/github/actions/workflow/status/pretalx/pretal... Read More

914 stars open source

Booking & Scheduling

LibreBooking

# Librebooking [![GitHub issues](https://img.shields.io/github/issues/LibreBooking/librebooking)](https://github.com/LibreBooking/librebooking/issues) [![Last commit](https://img... Read More

740 stars open source

Calendar & Scheduling Booking & Scheduling

OpenSlides

# OpenSlides [![tests-stable](https://github.com/OpenSlides/OpenSlides/actions/workflows/test-integration-stable.yml/badge.svg)](https://github.com/OpenSlides/OpenSlides/actions/w... Read More

615 stars open source

Booking & Scheduling

Christmas Community

# Christmas Community ![Docker Pulls](https://img.shields.io/docker/pulls/wingysam/christmas-community?style=for-the-badge) ![Version](https://img.shields.io/badge/dynamic/json?co... Read More

411 stars open source

Booking & Scheduling Polls & Voting

Hotels_Server

# Hotels_Server 住哪儿项目后台管理系统 **住哪儿App的后台管理功能，包括主题酒店、特色酒店发布、注册用户的统计查看、订单的统计查看、酒店的统计查看。Controller目录下的Api下就是给App... Read More

346 stars open source

Booking & Scheduling ERP & Business

Doctor-Appointment

# DoctorOnCall — Online doctor appointments **A full-stack web app where patients book visits, doctors manage schedules and prescriptions, and admins oversee the system — all in o... Read More

339 stars open source

Web Development Booking & Scheduling