Best Network Tools in 2026

All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.

Key MxToolBox features:

Ease of Use Comprehensive Tools Speed Free Tier

warmup.rocks keeps your CDN cache warm in every edge location worldwide: Cloudflare, Fastly, Akamai, CloudFront and more. Warming from 42 countries, hit-ratio analytics.

Key warmup.rocks features:

Free Resource Copy-Paste Code Visual Preview Variety of Effects

Try for free paid Free Trial $15 / Monthly (1 project, 100 pages per run, Warm every 3 hours) Sponsored

Free IP lookup plus a full privacy check in your browser: VPN/Tor detection, DNS, IPv6 and WebRTC leak tests, browser fingerprint and IP blacklist. No sign-up.

Key WhatIsMy-IPAddress.com features:

IP Address Lookup IP Geolocation VPN / Proxy / Tor Detection DNS Leak Test

free

Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla.

Key Speedtest.net features:

User-Friendly Interface Global Server Network Detailed Results Mobile App Availability

Simple IP address information.

Key ipinfo.io features:

Comprehensive Data Ease of Use Accuracy Scalability

Open Source

GNS3 is a graphical network simulator that allows simulation of complex networks.

Key GNS3 features:

Realistic Network Simulation Wide Device Support Free and Open-Source Community Support

Open Source

Free DNS and network diagnostic tools. Look up DNS records, check email authentication, inspect SSL certificates, and verify IP reputation — all in one place.

Key Mr.DNS features:

Simple DNS Management Affordable Pricing Reliable Uptime Multiple Record Type Support

Quickly test your internet speed with this fast-loading speed test powered by Netflix.

Key Fast.com features:

Simplicity Ad-Free Integration with Netflix Quick Results

Free, no-signup internet speed test — download, upload, ping and jitter in one click, with a plain-language explainer of what your numbers mean.

Key internetspeedtest.net features:

Simple and Free to Use Measures Key Metrics Accessible Anywhere No Installation Required

10015.io is an all-in-one toolbox offering many tools from various categories.

Key 10015.io features:

User-Friendly Interface Wide Range of Tools No Registration Required Cross-Platform Support

Broadband Internet Speed Test Unlocked!

Key OpenSpeedTest features:

User Friendly No Flash Required Cross-platform Privacy

Open Source

Self-hosted Speedtest for HTML5. Easy setup, examples, configurable, mobile friendly.

Key LibreSpeed features:

Open Source Free to Use Customizable Self-Hosted

Download Cisco Packet Tracer, an innovative network simulation and visualization tool used by Cisco Networking Academy students and instructors.

Key Cisco Packet Tracer features:

Free for Students Comprehensive Simulation Educational Tool Cross-Platform Compatibility

IPLocation.io provides a free lookup tool to check the location of your Public IP Address. It finds this data through various GEO IP databases and online services. Just enter an IP and check its location easily.

Key IP Location features:

Accurate Geolocation Comprehensive Databases User-Friendly Interface