Frequently Asked Questions

Here you can find the most commonly asked questions related to Kaitotek's products and services.

Press a topic to expand related questions. If you have questions, which are not covered on this page, please contact us

Platforms Learn whether Qosium is compatible with your operating system or device

Does Qosium work in Windows 8, Windows 10, and Windows Servers?

Yes. In fact, Windows is one of the most used end-device platforms with Qosium.

Is MacOS/OSX supported?

Yes, Qosium Probe and Qosium Scope are available for MacOS/OSX.

What Linux operating systems are supported?

In short, practically all Linux-based operating systems are supported. All mostly used Linux distributions are supported directly. This includes, for example, Ubuntu, Debian, CentOS, RedHat, Fedora, Gentoo, and other distributions based on them. However, with some Linuxes, we need to know your Linux build in more detail to be able to provide you with an installer package. These include, for example, Yocto and OpenWRT.

Does Qosium work in Android?

As for other Linux-based systems, Qosium Probe is available for Android devices as well. In fact, many of our customers perform measurement with Android phones. Remember, however, that Qosium Probe needs to be run with administrator privileges. Qosium Scope is currently not available for Android but measurements on Android phones can be controlled remotely.

Does Qosium work in iOS?

Qosium is not currently available for devices running iOS. However, please contact us if you have a need for this and let's discuss more.

Do you support FreeBSD?

Yes, Qosium is available for FreeBSD as well.

Can I install Qosium to Raspberry Pi?

Sure, Qosium Probe is made very light-weight and can be run also on resource-constrained devices. Qosium is verified to work on Raspberry Pi 3 and Pi 4.

I have a network device with a hardware-specific operating system. Can I install Qosium to that?

If we can prepare a build environment and the device allows installing third-party software, we most likely are able provide you with a software package to that device. Please contact us to discuss more about your device. If installing to that specific device is not possible, there are also other means to enable measurement. We gladly assist you to define measurement scenarios.

Website Account, forms, software downloads, and everything else related to this website

I completed a contact form on your web pages, but didn't receive a follow-up email. What should I do?

Our customer care handles all sign-up, trial, and offer requests rapidly and you should receive a follow-up email from us within two business days. If you haven't received an email, please check your spam folder. You can always contact our customer care also directly via or +358 40 120 4010.

Where can I download a software installer I requested?

Once we have received your request, we will make the installer packages available for you through our software delivery portal. You will receive a welcome email, which guides you to create a password for you account. After creating the password, you can sign in to your account. After signing in, head to downloads section to download installer(s) and a manual.

The sign-up form requires an organization name. Can I test Qosium at home first before bringing it up at my workplace?

Although we offer licenses mainly only for organizations, it's perfectly reasonable to test Qosium out of office first. Just fill out the organization name you work for, or alternatively type "Private".

Evaluation Qosium evaluation version and how to try it out

How can I get Qosium for testing?

Please sign up for evaluation by filling out this form. Alternatively, just send us an email at and ask for evaluation.

What happens after submitting the sign-up form?

We will be in contact with you via email, typically within 1-3 business days. We will ask what operating systems and version you plan to install Qosium to, if not stated already in the filled form. This is because Qosium can run on various operating systems and platforms. Of course, we are interested in hearing about your targeted use scenarios to be able to help you more, but this is not mandatory. We will then proceed delivering an evaluation version and creating a personal account to our secure software deliver portal.

Why can't I just get a direct download link for Qosium?

Different use cases have very different needs for Qosium. Thus, we prefer to be in contact with the tester prior to delivering Qosium in order to assist in getting started smoothly and to maximizing the output of the trial period. Of course, it is not mandatory to share us any additional information where you will be using Qosium, but we want to offer this opportunity.

Is the evaluation version really free?

Yes, and we even offer support for the evaluation period. You can safely try out Qosium without any commitments. We will always contact you after the trial period to ask whether you found Qosium useful and would like to proceed to commercial usage.

Can I try out Qosium as an individual without a company?

Yes, anyone can test Qosium for the given evaluation period.

Do you provide support for trialling Qosium?

Sure, we want to ensure that you always get the most out of testing. If you wish, we are happy to provide you with training to use Qosium, help you with the measurement setup, and assist in results analysis.

Where can I find the user documentation?

We provide a comprehensive user manual in the product download section, which you can access after an account has been created for you.

Licensing Buying and using Qosium

Where can I see the license models and prices?

Please fill up a contact form price query or contact us by email We are happy to provide you with information and prices for different licensing models. We have commercial license models for yearly, daily, and project usages. In addition, we have a separate license model for academic use.

I'm a researcher, student, or teacher. How can I get Qosium for my university?

At Kaitotek, we have carried out over 10-years long research phase for Qosium. We want to support education and research work and have prepared a separate license model for this usage. Please contact us at to hear more.

Technology QoS, QoE, and network measurements with Qosium

Can I measure uplink and downlink directions separately?

Yes, Qosium measures always sent and received directions separately. It is possible that communications problems show up only in the other direction and with Qosium you can detect that quickly and easily.

Our applications have strict milliseconds demands for latencies. Can I measure latencies that accurately?

Qosium can measure delays even in microseconds accuracy. In order to measure such small delays, one, of course, needs to take care of the clock synchronization between the measurement points, but there are several options to achieve this. Thus, Qosium can verify that your applications meet their requirements for the network connections at all times.

What does passive measurement mean?

Most network performance measurement solutions available are active ones. This means that QoS and/or QoE are measured only for the artificial test traffic generated by the solution itself. These tools are very useful, e.g., when making maximum performance measurements and testing new networks. However, when studying the performance of an operational network with real users, it is not recommended to burden it with extra test traffic, since it can affect the performance of the network. In addition, active measurement solutions cannot say anything about how the real applications running over the measured network currently work. To measure the quality of real existing applications, this is where the passive measurement comes into the play.

Passive QoS measurement does not create the traffic it measures, but it measures the QoS of the real existing applications in the network. Let’s take an example. There is live video stream application traffic in the network. If an active measurement tool is used to measure the performance, one gets results for that stream only, while the actual interesting video stream can perform differently. Also, the active test traffic stream changes the setup, since it adds traffic to the measured network path. In the worst case, it can congest the path in interest, which means that one gets incorrect results while interfering the live video stream user. Passive measurement, on the contrary, evaluates the actual video stream and measures how well the network serves it from the QoS perspective, making it also possible to estimate with application-specific QoE models that how satisfied the end-user is for the video quality. As a result, one gets, for instance, delay, jitter, packet loss, and connection breaks just for the desired real video stream over the measurement path of interest. Passive measurement is ideal when you need to know the quality and availability of real applications and services over networks when the network is in operational use.

Finally, it is important to realize that active and passive measurement technologies are not competitors of each other. Instead, they are meant for different use cases.

We have a network operation and management system in use. Can I integrate passive QoS/QoE measuremen into that?

Qosium measurement can be integrated into existing external systems (e.g., network management solutions) with the API we provide. This API gives you a full control on measurements with your Qosium Probes in the network. This includes everything, from parameterization of measurements to collecting measurement results in real time. A partial integration is also possible. In this, Qosium’s control tools (Qosium Scope, Scopemon, or Scope Lite) are used, but the external system collects the results. This type of integration is very trivial.

We need network measurements, but all of this is too overwhelming

Delving into communication networks' performance thoroughly can sometimes be challenging due to, for example, lack of resources to do the work or complex network setups. Kaitotek also provides network measurement services. We can do the measurements for you and provide you with a detailed analysis of what is the network's true quality and performance. Please take a look at Kaitotek Services.

I am a Wireshark expert: why should I switch it to Qosium?

We also use Wireshark a lot! Qosium does not replace Wireshark or the other way around, since they are two different tools for different purposes. Qosium is a QoS measurement tool, while Wireshark is a protocol analyzer. For example in troubleshooting, the joint use of Wireshark and Qosium increases working efficiency, saving time and money. Qosium allows you to find network QoS problems quickly, and you can also see what it is about (e.g., occasional delay spikes). After this, one can take Wireshark and dig into the traffic itself at the correct place to see if there are hints what is causing the behavior. Sometimes the root-causes for the problems cannot be seen directly in the traffic but are caused, e.g., by a malfunctioning network device. Qosium offers also a possibility to take traffic captures from a remote point. One can then store the traffic in the well-known pcap format allowing digging into the traffic with Wireshark.