Jeff Wilson 
In this tutorial, we will show you how to install RoundCube on a Debian 9 VPS. RoundCube is an open-source web-based IMAP email client written in PHP with an application-like user interface. It allows users to read, send, and organize their emails easily. One of the most prominent features of RoundCube webmail is the widespread use of Ajax technology and find-as-you-type address book integration. 
The RoundCube webmal user interface is very customizable and it is available in over 80 languages.
In this tutorial, we will show you how to install RainLoop on a Debian 9 VPS. The tutorial will go over the required prerequisites, the installation of RainLoop, as well as the configuration of RainLoop itself. RainLoop is easy-to-install and set up, making it a quick installation. The installation process should take about 10 minutes if you follow the very easy steps described below.
RainLoop is a free and open-source webmail application written in PHP. As an alternative to other popular webmail applications like RoundCube and SquirrelMail, RainLoop is a complete webmail solution – it is a simple and modern, yet very powerful and flexible at the same time. RainLoop webmail has a built-in caching mechanism, which improves the overall performance of the application while also reducing the load on both the web server and the mail server.
In this tutorial, we will show you how to install and set Apache Kafka on a VPS running Ubuntu 18.04.
Kafka or Apache Kafka is a distributed messaging system based on the principle of the pub-sub (publish-subscribe) model. It allows us to publish and subscribe to a stream of records that can be categorized. It is an incredibly fast, highly scalable, fault-tolerant system, and it’s designed to process large amounts of data in real time. Apache Kafka can be used as an alternative to a message broker as well, which allows us to process/transform a stream of records. Kafka can be used as a messaging system, but in a rather incomparably huge scale. Overall, Apache Kafka is a very powerful tool when used correctly.
In this tutorial, we will show you how to install and perform the first-time setup of Roundcube on Ubuntu 18.04.
Roundcube Webmail is a free and open-source web-based IMAP client, written in PHP. With its intuitive and desktop-like user interface, Roundcube provides an easy way for you to check and manage your emails using your web browser.
It provides all of the functionalities that you would come to expect from an email client, including full MIME and HTML support, an address book, folder management, advanced message searching, spell checking, and much more. Check out our guide if you’re interested in learning more about the differences between IMAP and POP.
In this tutorial, we will show you how to install Open Web Analytics on a Debian 9 VPS.
Open Web Analytics is an open-source traffic analysis tool that helps website owners analyze how visitors use their websites. Open Web Analytics also allows owners to track their website’s visitors, including mouse movements, scrolling, and key-presses. 
Additionally, Open Web Analytics has built-in support for tracking websites that are created with popular content management systems, such as WordPress and MediaWiki.
In this tutorial we will describe the steps of installing TaskBoard and all necessary components on an Ubuntu VPS.
TaskBoard is a free, open-source, PHP-based and self-hosted scheduling application which help users to keep track on their important tasks. TaskBoard has a simple and clean ‘Kanban’-inspired interface that’s intuitive and very easy-to-use.
In this article, we will show you how to install ISPConfig 3 on a CentOS 7 VPS, as well as go through the initial configuration.
ISPConfig is an open-source hosting control panel for Linux which has a user-friendly web interface – with it, users can manage their websites, email addresses, FTP accounts, DNS records, databases, and shell accounts.
The ISPConfig has four different levels of user access, which are as follows: Administrator, Reseller, Client, and Email-user. Each of these has varying levels of access to ISPConfig’s menus.
In this guide, we will explain how to install Gogs on an Ubuntu 18.04 VPS with MariaDB as a backend database.
Gogs is a free and open-source self-hosted Git service written in the Go programming language. It’s easy-to-install, it’s cross-platform, and it’s lightweight, all of which allows Gogs to run on all sorts of hardware easily. This guide should work on other Linux VPS systems as well, but it was tested and written for an Ubuntu 18.04 VPS.