Device42 vs LibreNMS

Device42 provides agentless discovery, asset management, and dependency mapping for data center, cloud, and hybrid IT environments. Its scope includes CMDB, DCIM, ITAM, IPAM, password management, and application dependency mapping, in a self-hosted deployment. It can discover network devices through SNMP and cloud resources across AWS, Azure, Google Cloud, Oracle Cloud, and OpenStack.

For data centers, its visual models cover buildings, rooms, racks, cabling, and patch panels, with power and temperature heat maps. Core includes discovery, inventory and asset management, integrations, REST APIs and webhooks, warranty and SSL certificate management, cable and password management, and IPAM. Device42 also tracks software licenses, contracts, and barcodes, and lists more than 30 integrations. Licenses count devices with IP addresses; non-IP assets do not count, and user seats are unlimited. If the device limit is exceeded, the software keeps running but stops collecting additional information until the license is increased. Pricing is available on request, and a free trial is offered.

LibreNMS is a free, self-hosted network monitoring system with device support. It can discover networks using CDP, FDP, LLDP, OSPF, BGP, SNMP, and ARP. Customizable alerts can be sent through email, IRC, Slack, and other transports, while the API can manage installations, create graphs, and retrieve data. Distributed polling supports horizontal scaling. Documented functions include VLAN, ARP and FDB collection, traffic billing, syslog, service monitoring, and customizable dashboards. Integrations include Oxidized, RANCID, NfSen, Smokeping, Graylog, and Nagios plugins. Authentication choices include MySQL, LDAP, Active Directory, and HTTP, with two-factor authentication also documented. Installation guides cover CentOS and Ubuntu, and Docker images are available. Native iPhone and Android apps provide core functionality, and an online demo is available before installation. Community help is offered through Discord and a forum; commercial SLA-backed support and consultancy are available through partners.