Open Source Software
PostgreSQL
PostgreSQL, or Postgres for short is a widely popular, free and open-source relational database management system. PostgreSQL is available for all major operating systems including macOS, Linux, Windows, BSD and Solaris. The project has been in active development for over 30 years now, and powers many of the applications you use on a daily basis.
Ubuntu Budgie
Ubuntu Budgie is an official community flavor of the Linux distribution Ubuntu featuring the Budgie desktop. It combines the stable and thoroughly-tested Ubuntu core with a modern, lightweight and traditional-looking desktop developed by the Solus project. The desktop is adaptable to any device, keeping them fast and usable.
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.
SQLite
SQLite is a free and open-source relational database management system that implements a small, fast, self-contained, high-reliability, full-featured, SQL database engine. Rather than being a typical client–server database engine, SQLite is self-contained and can be embedded into applications. Making it perfect for development frameworks that want to provide a default database without setup, or applications that needs an embedded database. SQLite is built into all mobile operating systems and most computers and comes bundled with a countless applications. SQLite is also ACID-compliant and implements most of the SQL standard, generally following PostgreSQL syntax.
TimescaleDB
TimescaleDB is a leading open-source relational database for time-series data. The database is provided as fully managed or self‑hosted software, giving the power of choice back to developers and organizations. Timescale gives you all the reliability and flexibility of PostgreSQL. It allows you to use regular SQL to construct queries to better understand your products and your users. While achieve 10-100x faster queries than PostgreSQL, InfluxDB, and MongoDB with native optimizations for time-series.
WatermelonDB
WatermelonDB is a free and open-source database optimized for building complex applications in React and React Native. The goal of WatermelonDB is to provide real-world performance for apps that can scale from hundreds to tens of thousands of records and while remaining performant. Loading a full database into JavaScript can be expensive, WatermelonDB fixes this by being lazy as a default, and only loads data upon request.
CouchDB
CouchDB is a free and open-source document-oriented NoSQL database developed by the Apache Foundation. The database is written and implemented in the language Erlang and provides the use of multiple formats and protocols to store, transfer, and process data. With CouchDB you query data with JavaScript using MapReduce, and HTTP for an API. Which can be done across multiple distributed CouchDB instances as the database has the ability to synchronize multiple copies of the same database, across servers.
HardenedBSD
HardenedBSD is a security-enhanced fork of FreeBSD. The HardenedBSD Project is implementing many exploit mitigation and security technologies on top of FreeBSD. Allowing penetration testers and system security experts to enjoy a prebuilt suite of tools on top of FreeBSD.
Solus
Solus is a Linux-based operating system that is designed for home computing. The OS is released as free and open-source software under the GNU General Public Licesense. Solus is a perfect replacement for macOS or Windows and delivers a cohesive computing experience loved by many.