Mind Infinity

Running a website 100% of the time is very crucial for businesses. Even few minutes or hours, downtime affects business a lot, for small businesses percentage is much higher. Enterprises uses tools such as nagios for monitoring the services which includes web servers, database servers etc.

Another alternative is Open NMS which is first enterprise grade network management platform made under opensource license and there is Zenoss which is equally comparible to nagios written in python.  When you compare with Nagios, Nagios wins as it has lots of features as they promise and many things such as controlling dependable services etc are done which are very important for enterprises.

However, above tools needs lots of resources and setting up is very time consumable, there are many web alternatives mainly for small/medium businesses which can monitor the services.  These tools are quiet handy and ease of setup.

Host Tracker a web monitoring service, they have a free service with limited features and with a little pricing they have many other features which is quiet good.

Important thing in monitoring is alerts and many of the services has the email alerts and sms alerts with a little pricing.

Alternatively, there are many other web services such as SiteUptime and Montastic which have similar features with different features and pricing plans.

Recently I came across a nice monitoring service mon.itor.us which looks very promising and claim as free though they have bit of pricing for SMS alerts. So far it performed well with the tests and it doesnt send you annoying alerts which many other services do, It is getting popular and worth giving a try. It can monitor the website externally and also monitor CPU, memory, intranet etc internally. Easy to start.