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24/7 website availability?
It’s possible with PRTG


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    Monitor the availability
    of your websites

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    Monitor load times

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    Receive immediate notifications in the event of downtime or poor performance
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    Monitor from several
    different locations


Free Download

Unlimited use of PRTG for 30 days. After 30 days PRTG reverts to the freeware edition.
You can upgrade to a paid license at any time.







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What’s “website availability?”

Website availability is the amount of time that a website or service can be accessed by users. It is usually calculated as a percentage, and ideally, should be as close to 100% as possible. The “five nines” – or 99.999%, correspond to 5 minutes of downtime per year and is a value worth pursuing.




Why website availability
is important

For most companies, a properly functioning website is a must.
Slow pages and 404 errors can have a major impact on business
and often come with a hefty price tag.

The PRTG Network Monitor provides round-the-clock monitoring
of the performance and availability of your websites. Thanks to
PRTG, you can stop errors in their tracks. And in the event that
one sneaks through, you'll be notified at once.




Trusted by 500,000 users and recognized
by industry analysts as a leader


“Fantastic network and infrastructure monitoring solution that is easy to deploy and easier still to use. Simply the best available.”

Read more reviews

“Software is absolutely perfect, Support is superior. Meets all needs and requirements, this is a must have solution if you are needing any form of monitoring.”

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“The tool excels at its primary focus of being a unified infrastructure management and network monitoring service.”

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Free Download

Unlimited use of PRTG for 30 days. After 30 days PRTG reverts to the freeware edition.
You can upgrade to a paid license at any time.



PRTG monitors the
following parameters:


  • Availability of your websites and domains
  • Whether certain content is available on the website
  • Page speed
  • Changes to the website
  • CPU and memory usage, storage space on your web servers, etc.
  • Availability and performance of your databases

Check worldwide availability with PRTG

PRTG HTTP sensors monitor the availability and speed of your
domains and websites. And with the Cloud HTTP Sensor and
Cloud Ping Sensor, you can check availability from locations around the world.


cloud http sensor


cloud ping sensor



PRTG in a nutshell


PRTG monitors your entire IT infrastructure

Traffic, packets, applications, bandwidth, cloud services, databases, virtual environments, uptime, ports, IPs, hardware, security, web services, disk usage, physical environments, IoT devices and almost everything you can imagine.

PRTG supports most technologies

SNMP (all versions), Flow technologies (i.e. NetFlow, jFlow, sFlow), SSH, WMI, Ping, and SQL. Powerful API (Python, EXE, DLL, PowerShell, VB, Batch Scripting, REST) to integrate everything else. See all PRTG features

PRTG is ready for every platform

Download for Windows and hosted version
available. Monitoring via AJAX Web Interface or Desktop Client.



Still not convinced?



More than 500,000 sysadmins love PRTG

PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier.

Still not convinced?


Monitor your entire IT infrastructure

Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.




Free Download



Try PRTG for free

Everyone has different monitoring needs. That’s why we let you try PRTG for free. Start now with your 30-day trial.




Network Monitoring Software - Version (June 22nd, 2022)


Download for Windows and cloud-based version PRTG Hosted Monitor available


English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese


Up to 100 sensors for free (Price List)

Unified Monitoring

Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more

Supported Vendors & Applications

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