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iperf VS Npcap

Compare iperf VS Npcap and see what are their differences

iperf logo iperf

A TCP, UDP, and SCTP network bandwidth measurement tool

Npcap logo Npcap

Npcap is the Nmap Project's packet sniffing library for Windows.
  • iperf Landing page
    Landing page //
    2023-09-17
  • Npcap Landing page
    Landing page //
    2022-04-29

iperf videos

Using Iperf to measure network speed / bandwidth

More videos:

  • Tutorial - How to use iperf to test local network LAN speed in Windows 10
  • Review - [HOWTO] Test My Network Speed?! [iPerf & JPerf]

Npcap videos

Review on new released Nmap 7.80 at DefCon 2019 I 11 New NSE Scripts I Npcap

More videos:

Category Popularity

0-100% (relative to iperf and Npcap)
Monitoring Tools
82 82%
18% 18
Log Management
100 100%
0% 0
Security & Privacy
0 0%
100% 100
Network & Admin
100 100%
0% 0

User comments

Share your experience with using iperf and Npcap. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, Npcap should be more popular than iperf. It has been mentiond 7 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

iperf mentions (4)

  • Microsoft: Don't Use Iperf3 on Windows
    Just some clarification: IPerf 2 is different from the iperf3 found at https://github.com/esnet/iperf. - Source: Hacker News / 2 months ago
  • Yet Another Bench Script (YABS): evaluate Linux server performance with this simple Bash script and utility
    Network - network throughput (both incoming and outgoing) is tested using iperf3 on several geographically diverse public iperf servers. Source: almost 2 years ago
  • Speed testing Visible with a modem
    File transfer using iperf3 over Tailscale. I noticed that the bandwidth to my home computer (on a 500/500 fiber connection) was higher than with speedtest.net. For the first few days I was getting downloads and uploads of 28Mbps (+/- std dev of 6Mbps) and 150ms latency (+/- 35ms). After somewhere around 100GB total transfer (maybe half of that over Tailscale), it is now downloading and uploading at 10Mbps (+/-... Source: over 2 years ago
  • FTP upload speed isn't great
    I can add to this. I have two mini self contained projects to create multiarch static bins of mtr and iperf3 for general usage. Source: about 3 years ago

Npcap mentions (7)

  • WireShark Unable to Load Npcap; Not Able to Capture Packets
    >Installed WireShark 3.6.3.0 >>Opening Yellow Banner displays "Unable to load Npcap or WinPcap (wpcap.dll); you will not be able to capture packets. In order to capture packets, Npcap or WinPcap must be installed. See https://npcap.com/ for a downloadable version of Npcap and for instructions on how to install it." >>>Npcap 1.55 and 1.60 both fail with the same errors when attempting the install process...... Source: about 2 years ago
  • what is this?...
    Https://nmap.org/npcap/ a.k.a. https://insecure.org/ (insecure.com redirects to this). Source: over 2 years ago
  • Npcap loopback adaptor
    Npcap is a tool used to sniff and inject packets. It could be used for something nefarious, but it could also be used for NMAP, WireShark and various other networking tools. Source: almost 3 years ago
  • Alternative method for recovering R7000
    2.5: install npcap (you dont need to open it just install it) https://nmap.org/npcap/ (Turn off wifi on pc or laptop). Source: about 3 years ago
  • Let's talk about must have applications that you can't live without! 2021 Edition
    Npcap (Free) - Gives PCem access to my PCs network card so I can go online with Windows 95. Source: about 3 years ago
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What are some alternatives?

When comparing iperf and Npcap, you can also consider the following products

JPerf - This project gives a better UI and new functionalities to the initial JPerf 1.

WinPcap - Industry-standard tool for link-layer network access in Windows.

Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

mtr - mtr combines the functionality of the 'traceroute' and 'ping' programs in a single...

Win10Pcap - Win10Pcap is a WinPcap-based Ethernet packet capture library.

netperf - Netperf is a benchmark that can be used to measure the performance of many different types of networking. It provides tests for both unidirectional throughput, and end-to-end latency. - HewlettPack...