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An uncompromising mature enterprise-level platform designed for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices, effortlessly scaling to even larger environments.

Join millions of IT professionals and download Spiceworks, a free network monitoring software with network management tools, help desk ticketing app, network mapper and more.

Datadog is a monitoring service for IT, Dev & Ops teams who write and run applications at scale, and want to turn the massive amounts of data produced by their apps, tools and services into a unified view of IT infrastructure. Datadog's capabilities are provided on a SaaS-based data analytics platform that enables multiple teams to work collaboratively on infrastructure issues.

Icinga is a fork of Nagios and is backward compatible. So, Nagios configurations, plugins and addons can all be used with Icinga. Though Icinga retains all the existing features of its predecessor, it builds on them to add many long awaited patches and features requested by the user community. Icinga is an enterprise grade open source monitoring system which keeps watch over a network and any conceivable network resource, notifies the user of errors and recoveries, and generates performance data for reporting. Scalable and extensible, Icinga can monitor complex, large environments across dispersed locations. Icinga is licensed under GPL V2. »

Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work.

Check_MK is comprehensive IT monitoring solution in the tradition of Nagios. Check_MK is available as Raw Edition, which is 100% pure open source, and as Enterprise Edition with a lot of additional features and professional support.

Cacti is a complete frontend to RRDTool, it stores all of the necessary information to create graphs and populate them with data in a MySQL database. The frontend is completely PHP driven. Along with being able to maintain graphs, data sources, and Round Robin archives in a database, cacti handles the data gathering. There is also SNMP support for those used to creating traffic graphs with MRTG.

Opsview Atom is ideal for personal use, SoHo setups, test or lab environments or just to get your hands dirty with all of Opsview's monitoring functionality!

Opsview is award winning unified service monitoring software for complex, distributed IT infrastructures.

The Sensu Open Source Project (a.k.a. "Sensu Core") intends to provide an open framework for building comprehensive monitoring solutions, without imposing restrictions or being overly opinionated. While new user-facing "features" may be developed exclusively in Sensu Enterprise, the framework that makes those features possible will always be a part of Sensu Core.

Server and application performance monitoring has never been easier or more affordable. With agentless monitoring for hundreds of applications and hardware types, Server & Application Monitor delivers the management, alerting, and reporting you need to keep your servers and apps running at peak performance. Top 5 reasons to choose SolarWinds over SCOM: 1. Agentless monitoring provides quick comprehensive coverage and low overhead.2. Functional dashboards and common sense navigation are standard in SolarWinds SAM.3. Breadth of platform coverage, single pane of glass for server, application, network and storage health, extensible monitoring framework for custom applications.4. Affordable pricing. No professional services needed.5. Frequent functional updates. SolarWinds provides functional releases 2X per year »

IT monitoring has never been easier - lean back and let CloudRadar keep an eye on your servers, services and hosts. Up and running in minutes. No back doors.

Idera, formerly CopperEgg, is an all-in-one software-as-a-service designed and priced to ensure that organizations can effectively react to infrastructure performance issues. Idera provides four essential monitoring capabilities, giving you everything you need to identify and react to performance issues. These include server monitoring, website and web application monitoring, AWS monitoring, and database monitoring. Understanding the complex nature of today's IT infrastructures, we include out-of-the-box and fully customizable dashboards, alerts, and metric reports to match the requirements of your particular environment. »

Server Density offers unique SaaS-based scalable infrastructure monitoring to help businesses save time and money. With advanced server and website monitoring alerts, graphing tools and integrations with all major cloud service providers, Server Density’s robust and scalable solution helps businesses and IT operations teams be more responsive to issues, make their websites faster and minimise downtime.