The Best Arcai Alternatives in 2026

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

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

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

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

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

Use Bancuh DNS to filter ads, trackers, malware, and adult content across devices on a network.

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.

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

Resolve DNS queries with DNS.SB, which supports DNS over HTTPS and DNS over TLS.

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

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.

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

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

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

Listen on network ports or open a reverse shell with Rustcat, a cross-platform command-line tool.

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

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

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

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.

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