Top 9 C Sniffer Projects

esp_wifi_repeater

12 4,375 0.0 C

A full functional WiFi Repeater (correctly: a WiFi NAT Router)

Project mention: Please help, A noob Question. | reddit.com/r/esp8266 | 2023-05-26

Have a look at one of the available WiFi repeaters (actually a WiFi NAT Router)
proxmark3

24 2,669 9.8 C

The Iceman fork of Proxmark3 / RFID / NFC reader, writer, sniffer and emulator (by RfidResearchGroup)

Project mention: Question about sector 0 block 0 | reddit.com/r/RFID | 2023-05-27
SonarLint

www.sonarlint.org
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tcpdump

0 2,237 4.2 C

the TCPdump network dissector
libpcap

6 2,220 8.4 C

the LIBpcap interface to various kernel packet capture mechanism

Project mention: How to reverse engineer a JSON API on a single page application | dev.to | 2022-12-26

mitmproxy can be used to find the HTTP request with the needed data in addition browser dev tools. At some point, I'll explore tcpdump and wireshark to reverse engineer websites for web scraping and share the learnings with you.
ChameleonMini

2 1,570 7.7 C

The ChameleonMini is a versatile contactless smartcard emulator compliant to NFC. The ChameleonMini was developed by https://kasper-oswald.de. The device is available at https://shop.kasper.it. For further information see the Getting Started Page https://rawgit.com/emsec/ChameleonMini/master/Doc/Doxygen/html/_page__getting_started.html or the Wiki tab above.

Project mention: What NFC module is out there that can emulate all NFC technologies? (NTAG series, MIFAREs, etc) | reddit.com/r/NFC | 2022-10-15

Another alternative is to use something like Chameleon. They use an Atmel (general purpose microcontroller) instead of a specialized chip. However, that chip is currently out-of-stock, and the Chameleon is currently out-of-stock (or extremely expensive).
ngrep

1 750 10.0 C

ngrep is like GNU grep applied to the network layer. It's a PCAP-based tool that allows you to specify an extended regular or hexadecimal expression to match against data payloads of packets. It understands many kinds of protocols, including IPv4/6, TCP, UDP, ICMPv4/6, IGMP and Raw, across a wide variety of interface types, and understands BPF filter logic in the same fashion as more common packet sniffing tools, such as tcpdump and snoop.

Project mention: How can I automatically export all HTTP responses to a file as I visit pages? | reddit.com/r/firefox | 2023-04-11

well ... tsharek or ngrep (https://github.com/jpr5/ngrep/) should perform better than wireshark with its complete UI.
DDOS-RootSec

0 463 0.0 C

DDOS Archive by RootSec (Scanners, BotNets (Mirai and QBot Premium & Normal and more), Exploits, Methods, Sniffers)
InfluxDB

www.influxdata.com
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Access the most powerful time series database as a service. Ingest, store, & analyze all types of time series data in a fully-managed, purpose-built database. Keep data forever with low-cost storage and superior data compression.
driftnet

0 409 0.0 C

Driftnet watches network traffic, and picks out and displays JPEG and GIF images for display
ChameleonMini-rebooted

0 345 1.3 C

Chameleon Mini revE rebooted - Iceman Fork, the ChameleonMini is a versatile contactless smartcard emulator (NFC/RFID)

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-05-27.