Prevent IT downtime before it impacts your systems with Nagios Core – the free, open source monitoring solution trusted by 1M+ users worldwide. Monitor severs, networks & applications with powerful community-driven tools.

Zabbix is an enterprise-class, open-source monitoring solution that makes network and application monitoring simple.

Centreon is a leading IT monitoring software that helps businesses ensure the availability and performance of their IT infrastructure. Try it for free.

the main openbsd page

デージーネットはオープンソースソフトウェア(oss)を駆使し、お客様のご要望にお応えしたシステム構築、社内サーバインフラの構築、インターネットサーバ構築をご提供します。愛知県名古屋市。

fossies - the free open source software archive with special browsing features

Checkmk is a leading tool for Infrastructure and Application Monitoring. Simple configuration, scalable, flexible. Open Source and Enterprise.

Optimised | Simplified | For everyone - Backed by community, DietPi is a minimal OS image for SBCs - Raspberry Pi, Odroid, PINE64 etc. Install software optimised for you!