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List of Top Free Open Source & Self Hosted Application for Booking and Scheduling

ByAshwani K May 31, 2023June 19, 2023

Event scheduling, reservation, and appointment management software.

Alf.io – The open source ticket reservation system. GPL-3.0 Java
Cal.com – The open-source online appointment scheduling system. MIT Nodejs
Easy!Appointments – A highly customizable web application that allows your customers to book appointments with you via the web. GPL-3.0 PHP
QloApps – An open-source, customizable and intuitive web-based hotel reservation system and a booking engine. OSL-3.0 PHP
Seatsurfing – Webbased app to book seats, desks and rooms for offices. GPL-3.0 Docker

Ashwani K

👤 About the Author

Ashwani is passionate about DevOps, DevSecOps, SRE, MLOps, and AiOps, with a strong drive to simplify and scale modern IT operations. Through continuous learning and sharing, Ashwani helps organizations and engineers adopt best practices for automation, security, reliability, and AI-driven operations.

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Email– contact@devopsschool.com

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Nginx Tutorials: Basic commands
ByRajesh Kumar September 19, 2022December 23, 2022

These are the basic commands you use to interact with your NGINX instance. Check NGINX version: Check configuration file syntax before reloading: Display current configurations: Reload NGINX Rajesh Kumar I’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

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Apache Tomcat – Tomcat 7 Finalized – Tomcat 7 Introduction
ByRajesh Kumar January 18, 2011December 25, 2017

The volunteer developers behind Apache Tomcat have released version 7.0.6 of the open-source Java servlet container. “This is the first stable release of the Tomcat 7 branch,” developer Mark Thomas wrote in an e-mail announcing the release on various Tomcat developer mailing lists. While not a full application server, Tomcat implements the functionality described in…

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AWS Tutorials: Working with Code Commit
ByRajesh Kumar December 6, 2023December 6, 2023

Prerequisite – Make Sure you have CodeCommit IAM Access Step 1 – Create a Git Repo Step 2 – Get a Git repo Access Get a repo access Key for HTTPS or Upload you public key for SSH in IAM Step 2 – Code commit/push/pull request Verify at code CodeCommit Rajesh Kumar I’m a DevOps/SRE/DevSecOps/Cloud…

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From Good to Great: How to Evaluate and Improve Essay Quality
ByRajesh Kumar September 22, 2025February 21, 2026

Every engineer knows the power of iteration: small, deliberate improvements over time turn a decent deployment into a rock-solid release. The same principle transforms a good essay into a great one. Whether you’re writing a technical whitepaper, a personal statement for grad school, or a reflective piece for your team’s knowledge base, moving from “good…

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AWS Certified Solutions Architect Exam Guide – Chapter-10
ByRajesh Kumar April 29, 2021October 28, 2021

Know how to use Amazon ElastiCache.Improve the performance of your application by deploying Amazon ElastiCache cluster as part of your application and ofﬂoading read requests for frequently accessed data, Use the cache-aside pattern in your application ﬁrst to check the cache for your query results before checking the database. Understand when to use a specific…

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How Does Setup Support for IT Operations?
ByAshwani K May 12, 2023June 19, 2023

Have you ever wondered about the importance of setup support for IT operations? In today’s digital age, businesses rely heavily on their IT infrastructure to operate effectively. From managing databases to ensuring the security of sensitive information, IT operations play a critical role in the success of any organization. In this article, we’ll explore how…

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