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Configure AdGuard public DNS to block ads, trackers, malware, and adult websites.

Meshtastic is open-source mesh networking software for low-power devices used off-grid.

Use Tiarap’s DNS resolver to block ads, trackers, malware, scam, and phishing domains.

WiFi Analyzer helps Windows users identify wireless network problems and choose a Wi-Fi channel.

Use the AdGuard DNS filter, which combines filters for ads, tracking protection, and mobile ads.

Arcai provides NetCut and router utilities for controlling Wi-Fi networks on Windows and macOS.

Troubleshoot network problems with NETworkManager, an open-source application with built-in diagnostic tools.

Network protocol traffic can be inspected with Wireshark, a packet analysis application.

Check whether network ports are open and test port forwarding or router connectivity with PortCheckers.

Hurricane Electric’s BGP Toolkit provides routing lookup pages, including prefix and network reports.

Host DNS records for domains with Hurricane Electric’s free DNS service.

Check-Host monitors websites and checks servers, IP addresses, and host availability.

ngrok routes and secures traffic to applications, APIs, and AI models running locally or in production.

Enter a MAC address or OUI to find its vendor using IEEE and Wireshark manufacturer data; a REST API is also available.

Packet Sender sends and receives TCP, UDP, SSL, and DTLS packets and supports HTTP requests.

Estimate internet download speed in a browser with FAST.com, Netflix’s simple speed test.

Resolve and cache DNS queries with Unbound, a validating resolver that supports encrypted DNS protocols.

Port Checker tests whether ports are open and whether router port forwarding is configured.

Update dynamic DNS records with nsupdate.info, a free service that provides a memorable hostname.

CanYouSeeMe checks whether an internet connection has an open port and verifies port forwarding.

Register free domain names or short subdomains with DNS support through GetFreeDomain.

MyPublicWiFi turns a Windows computer into a wireless hotspot for sharing an internet connection.

Use No-IP for dynamic and managed DNS, domain registration, and SSL certificate services.

ifconfig.me displays a visitor’s public IP address and provides an API for IP geolocation data.