NextDNS 1.5.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. NextDNS for Mac belongs to Internet & Network Tools. The actual developer of this free Mac application is NextDNS Inc.
From the developer:
NextDNS lets you encrypt all DNS queries on all networks. The tool can help you block ads, trackers and malicious websites on all your devices. In addition, you get in-depth analytics about your Internet traffic. The app has the ability to protect your privacy and bypass censorship. Furthermore, it acts like a shield that protects your kids from adult content.
You may want to check out more Mac applications, such as Covenant Eyes, AirGrab Network Packet Analyzer or NetStatInDock, which might be similar to NextDNS.