Zabbix
Zabbix is an open-source software tool to monitor IT infrastructure such as networks, servers, virtual machines, and cloud services. Zabbix collects and displays basic metrics. Description. Zabbix is designed primarily as an IT infrastructure monitoring tool. New features are generally released every six months to major versions and every 1.5 years to LTS versions. Released under the terms of GNU General Public License version 2, Zabbix is free software that does not require a license to use any of its features. Even though Zabbix is open-source software, it is a closed development software product, developed by Zabbix  LLC based in Riga Latvia. Early in its history, Zabbix was described as simple to set up compared to other monitoring solutions. However, later it was considered by some to need a significant amount of manual configuration. As an open-source product however Zabbix focusses on the usage of existing tools and functionatity as well as proprietary solutions to achieve a scalable monitoring solution. Development. The first stable version, 1.0, was released in 2004. Since the first stable version was released as 1.0, Zabbix versioning has used minor version numbers to denote major releases. Each minor release implements many new  features, while change level releases mostly introduce bugfixes. Zabbix version numbering scheme has changed over time. While the first two stable branches were 1.0 and 1.1, after 1.1 it was decided to use odd numbers for development versions and even numbers for stable versions. As a result, 1.3 followed 1.1 as a development update to be released as 1.4.