Freemium and Open Source Software
Strapi
Strapi is a free and open source headless CMS developed with JavaScript for Node.js. The software makes it really simple to generate REST and GraphQL APIs. Simply create your database schema and relationships in the Strapi admin panel UI, and Strapi will auto-generate API endpoints to represent the data structures provided. Strapi comes packed with features you come to expect from normal CMS's such as authentication, authorization, content management and a media library. The software can be used for free and can be self-hosted on any server and platform. Extra enterpise functionallity is currently being developed, and will be sold at cost.
Bear CMS
Bear CMS is a self-hosted content management system that seamlessly integrates with your website. With Bear CMS you own your data and content, which is store on your own server. Your websites and Bear CMS's management tools integrate seamlessly and creates an experience that content managers and editors will enjoy.
Squidex
Squidex is 100% open source headless CMS, built by passionated developers. With Squidex both individuals and organizations can handle content for the new web with ease. Squidex modular platform allows users to create content APIs that can be consumed by any frontend framework or technology in a matter of minutes. The framework itself can also be extended and tweaked to suite individual use-cases. Squidex is provided as a fully open source software released and free of charge, for the self-hosted community edition. For organizations that want to get up and running fast, commercially hosted solutions are provided.
Zabbix
Zabbix provides an enterprise-class monitoring solution for network monitoring and application monitoring. The software can handle over millions of metrics and can be used for individual components or networks, servers, virtual machines and cloud services. Where data like network utilization, CPU load and disk space consumption can individually be monitored. Zabbix is developed openly and is fully open-soruce.
MaestroPanel
MaestroPanel is web hosting control panel that makes it easy to manage your server environment. MaestroPanel features an easy-to-use user interface which can improve the way you manage you manage your web hosting server.
aaPanel
aaPanel is a free and open source web hosting control panel. It's a simple, yet powerful control panel that provides one click installs for LNMP and LAMP development stacks through an intuetive graphical user interface (GUI). aaPanel was designed to help you save time when deploying web sites and applications to the web. Allowing you to focus on building your project, rather than focusing on installation and configuration of servers and tooling. Over 3 million people use aaPanel to create quickly deployable web environments for Apache HTTP Server, Nginx and OpenLiteSpeed.
Liquibase
Liquibase is an open source tool for tracking, managing and applying database changes, also known as migrations. With Liquibase, all database changes are stored in a human readable yet trackable form and checked into source control.
Budibase
With Budibase you can build and ship internal tools up to 50x faster. Budibase is an open-source low-code platform that helps developers and IT professionals design, build, and ship business apps faster.
Nuclino
Nuclino is a lightweight and collaborative wiki for all your team's knowledge, docs, and notes. Nuclino can serve as your teams collective mind. It includes features like a WYSIWYG collaborative real-time editor and a visual representation of a team's knowledge in a graph. Nuclino allows you to stay connected and effective while on the go.
Zulip
Zulip is an open-source real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones. Zulip provides modern apps for every major platform, powered by Electron and React Native. The software is 100% open source software, built by a vibrant community of hundreds of developers from all around the world.