Best Network Protocol Analyzers in 2026
Updated
In short: NETCAP is ranked #1 of 30 as of 4 October 2026, ahead of Scapy and NetworkMiner. The best-ranked option with a free plan is Scapy. The lowest first paid tier on this page is VoIPmonitor at $21.58/mo.
Analyzing network protocols begins with the capture environment and the ways you can inspect traffic. Compare capture sources, PCAP support, and remote capture, then consider flow analysis, traffic decryption, and CLI tools as you weigh investigation needs. Deployment details, free-plan availability, and paid starting prices add context on setup and access. Scapy, Wireshark, and TShark open the ranking, followed by NETCAP and Kismet. The listed criteria give you a basis for comparing where each analyzer fits and what kind of traffic analysis you need.
30 network protocol analyzers ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 NETCAP Top pick · 7.8 Free plan · $548/mo
#2 Scapy Runner-up · 7.5 Free plan · Free
#3 NetworkMiner Also great · 7.4 Free plan · Free
- Free planFree trial LinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Deployment
- both
- Capture sources
- both
- PCAP support
- Yes
RecognisedDocumentedPlatformsFree planFree trial$548/mofirst paid tier About NETCAPVisit site - Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Deployment
- both
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan LinuxmacOSWindows
- Free plan
- Yes
- Deployment
- desktop
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- No
RecognisedDocumentedPlatformsFree planFree trial - Free plan LinuxmacOSWindows
- Free plan
- Yes
- Deployment
- desktop
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan apiLinuxself-hostedWeb
- Free plan
- Yes
- Deployment
- server
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- No
RecognisedDocumentedPlatformsFree planFree trial - Free plan apiLinuxmacOSself-hostedWindows
- Free plan
- Yes
- Deployment
- both
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan LinuxmacOSWindows
- Free plan
- Yes
- Deployment
- both
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan LinuxmacOSWindows
- Free plan
- Yes
- Deployment
- both
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan LinuxmacOSWindows
- Free plan
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free trial apiLinuxself-hostedWeb
- Free plan
- No
- Paid from
- 22 /mo
RecognisedDocumentedPlatformsFree planFree trial$21.58/mofirst paid tier About VoIPmonitorVisit site - WindowsmacOSLinuxAndroid
- Deployment
- both
- Capture sources
- both
- PCAP support
- Yes
RecognisedDocumentedPlatformsFree planFree trial - WebWindowsLinux
- Deployment
- both
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - WebmacOSLinux
- Deployment
- server
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- No
RecognisedDocumentedPlatformsFree planFree trial - WindowsLinuxmacOS
- Deployment
- desktop
- Capture sources
- local
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan LinuxmacOSWindows
- Free plan
- Yes
- Deployment
- both
- Capture sources
- local
- PCAP support
- Yes
RecognisedDocumentedPlatformsFree planFree trialFree About ZuiVisit site - LinuxmacOS
- Free plan
- Yes
- Deployment
- desktop
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - LinuxmacOSWindows
- Free plan
- Yes
- Deployment
- server
- Capture sources
- local
RecognisedDocumentedPlatformsFree planFree trial - WindowsmacOSLinux
- Free plan
- No
- Deployment
- desktop
- Capture sources
- local
- PCAP support
- Yes
- Traffic decryption
- No
RecognisedDocumentedPlatformsFree planFree trial - WebLinux
- Free plan
- No
- Deployment
- server
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- No
RecognisedDocumentedPlatformsFree planFree trial - Windows
- Free plan
- Yes
- Deployment
- desktop
- Capture sources
- local
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Windows
- Free plan
- No
- Deployment
- both
- Capture sources
- both
- PCAP support
- Yes
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Linux
- Free plan
- Yes
- Deployment
- desktop
- Capture sources
- both
- PCAP support
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Web
- Deployment
- server
- Capture sources
- both
- PCAP support
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Web
- Free plan
- Yes
- Deployment
- server
- Capture sources
- local
- PCAP support
- Yes
RecognisedDocumentedPlatformsFree planFree trial - WebWindows
- Free plan
- No
- Deployment
- both
- Capture sources
- both
- Traffic decryption
- Yes
RecognisedDocumentedPlatformsFree planFree trial
Is your tool 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 protocol analyzer is ranked first on Specifiction?
NETCAP is ranked #1 of 30 with a score of 7.8. Scapy is second and NetworkMiner third.
How many of these have a free plan?
10 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, VoIPmonitor has the lowest first paid tier we found: $21.58/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing. Paid placements never change a rank.