Best Network Diagnostic Software in 2026
Updated
In short: DNSViz is ranked #1 of 39 as of 4 October 2026, ahead of Globalping and iperf3. The best-ranked option with a free plan is Globalping. The lowest first paid tier on this page is Globalping at $10/mo.
Network diagnostics can help you investigate name resolution, packet loss, and paths between endpoints. Compared on DNS diagnostics, packet-loss analysis, and path visualization, these tools can be assessed by the network questions they help answer. Deployment, command-line interface, supported platforms, and target limit matter when fitting a tool to your environment; free-plan availability and paid-from pricing add cost context. Globalping and RIPE Atlas head the entries, with DNSViz and iperf3 also near the beginning. PingPlotter, Nmap, NETworkManager, and DNSViz Toolkit follow among the first options. Use the ranking order alongside these criteria to focus on the capabilities relevant to your systems.
39 network diagnostic software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Deployment | |
|---|---|---|---|---|---|---|---|---|
| 1 |  DNSViz | 7.3 | RecognisedAPIDocumented | Free | — | — | hybrid | View |
| 2 | Globalping | 7.2 | RecognisedAPIDocumented | $10/mo | Yes | — | hybrid | View |
| 3 |  iperf3 | 7.2 | RecognisedAPIDocumented | Free | Yes | — | desktop | View |
| 4 | RIPE Atlas | 7.2 | RecognisedAPIDocumented | Free | — | — | hybrid | View |
| 5 |  SoftPerfect Bandwidth Manager | 6.0 | RecognisedAPIDocumented | Free | No | — | desktop | View |
| 6 | Buddi | 5.9 | RecognisedAPIDocumented | Free | Yes | — | desktop | View |
| 7 | NetSpot | 5.9 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 8 |  Nmap | 5.9 | RecognisedAPIDocumented | $9,980/mo | Yes | — | desktop | View |
| 9 | PingPlotter | 5.9 | RecognisedAPIDocumented | $29/mo | Yes | 6.99 /mo | hybrid | View |
| 10 | inSSIDer | 5.8 | RecognisedAPIDocumented | $16.67/mo | Yes | — | — | View |
| 11 | NETworkManager | 5.8 | RecognisedAPIDocumented | Free | Yes | — | desktop | View |
| 12 |  WhatInStartup | 5.8 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 13 |  SolarWinds Free SFTP/SCP Server | 5.6 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 14 | WifiInfoView | 5.6 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 15 |  WinMTR | 5.6 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 16 | Advanced Port Scanner | 5.5 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 17 |  Angry IP Scanner | 5.5 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 18 |  DNSViz Toolkit | 5.5 | RecognisedAPIDocumented | — | Yes | — | hybrid | View |
| 19 |  HttpWatch | 5.5 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 20 | iperf2 | 5.5 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 21 |  netcat | 5.5 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 22 | nPerf | 5.5 | RecognisedAPIDocumented | — | Yes | — | hybrid | View |
| 23 | Open Visual Traceroute | 5.5 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
| 24 |  PingTester | 5.5 | RecognisedAPIDocumented | — | Yes | — | hybrid | View |
| 25 |  WhatRoute | 5.5 | RecognisedAPIDocumented | — | Yes | — | desktop | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which network diagnostic software is ranked first on Inferse?
DNSViz is ranked #1 of 39 with a score of 7.3. Globalping is second and iperf3 third.
How many of these have a free plan?
11 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Globalping has the lowest first paid tier we found: $10/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.