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Excellent performace

NxFilter is a light-weight DNS filter. It doesn’t cause any latency issue in your network. We deliver an excellent filtering performance.

Next-level features

Active Directory integration, DNS over HTTPS, Screen time, Data cap, User level report, Remote user filtering, clustering and more.

Free for everybody

Commercial, nonprofit, schools, hospitals, companies and business environments, family protection, etc. Whatever the purpose, it’s free!

Crafted with technical excellence
and expertise in DNS filtering.



A few of NxFilter’s core features

Faster and lighter

NxFilter only needs to filter DNS queries on your network which means virtually no latency and makes it extremely lightweight compared to using a webproxy server.


Local DNS cache

NxFilter caches DNS responses from its upstream DNS server. Users will be answered locally by NxFilter cache greatly reducing DNS traffic on your network.


Mobile user filtering

NxFilter provides several types of filtering agents for remote devices running on Windows and Android. You also can filter iOS devices using DNS over HTTPS.

High scalability

NxFilter is used by ISPs, DNS filter providers, schools, hospitals, and other businesses and has many years or real world performance experience.


User authenticaiton

You can protect your network with user authentication by NxFilter. NxFilter supports various kinds of user authentication methods including Active Directory integration.


URL keyword filtering

You may want to filter something you can’t filter with a DNS filter. You want to block some search keywords in Google and other search engines. It is possible with NxFilter.

Very stable

NxFilter is very stable and does not require frequent restarts. Many users run NxFilter for months without restarting and typically only restart when applying updates.


Multiple policies

NxFilter provides multiple filtering policies for users and groups. Policies are easily created in the NxFilter GUI and can be applied to individual users and/or groups.


Community proven

We are all tired of those sales tactics. We present you the real world usage reports by our test user group. Decide which is the best for you based on real world data.

Home User

Home User

You want to apply a stricter filtering policy to your kids while you want to be under a lenient one. NxFilter supports multiple policies based on users and groups.

Large Site

Large Site

NxFilter is designed to be filtering several thousand users easily. That’s why it’s the best for filtering in schools and universities.

Branch Office

Branch Office

You want to filter all your branch offices centrally. You can run NxFilter on cloud and filtering multiple branch offices using its DNS relay agent that is NxRelay.

MSP User

MSP User

If you want to build your own cloud filtering business, we have NxCloud for you. NxCloud is a multi-tenancy DNS filtering software developed based on NxFilter.
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