Coroutine-based concurrency library for PHP
Community-based GPL-licensed network monitoring system
The systemd system and service manager
Application Performance Monitoring System
The Java agent for Apache SkyWalking
Easy to use open source fast database for search
Enhanced Apache Server Status page - for one or multiple servers
IP Address Management - CMDB - Ticketing - DNS and Zone Management
Command line tool for managing Amazon S3 and CloudFront services
free netflow analyzer
SkyWalking RocketBot UI
Xplico is a Network Forensic Analysis Tool (NFAT)
PCAP from another point of view
Linux Server and Data-Center WAN Optimization
Webinterface to (un)ban IPs in Fail2Ban
Open Source SIEM
Energy and environmental monitoring of the server room
Lightweight fully extendable client/server application framework
Visual Network Management System
NfSen plugin to generate and analyze per-IP statistics
A SNMP agent for Cacti