Top 12 network-discovery Open-Source Projects

scapy

26 10,028 9.3 Python

Scapy: the Python-based interactive packet manipulation program & library. Supports Python 2 & Python 3.

Project mention: Seven Python Projects to Elevate Your Coding Skills | dev.to | 2024-02-15

Example Network Scanner Scapy

nmap

26 9,228 9.1 C

Nmap - the Network Mapper. Github mirror of official SVN repository.

Project mention: NMAP-formatter: convert NMAP results to HTML, CSV, JSON, graphviz (dot), SQLite | news.ycombinator.com | 2024-01-26

https://github.com/nmap/nmap/issues/635
This looks like a reasonable mitigation for the lack of native JSON output.

InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
IVRE

6 3,286 8.2 Python

Network recon framework. Build your own, self-hosted and fully-controlled alternatives to Shodan / ZoomEye / Censys and GreyNoise, run your Passive DNS service, collect and analyse network intelligence from your sensors, and much more! Uses Nmap, Masscan, Zeek, p0f, etc.
phpIPAM

40 2,131 8.3 PHP

phpipam development repository

Project mention: Selfhosted subnet calculator | /r/selfhosted | 2023-05-23

Cacti

23 1,562 9.7 PHP

Cacti ™
fping

6 966 7.5 C

High performance ping tool

Project mention: Live Ping meter for task/toolbar? | /r/Windows11 | 2023-09-14

https://fping.org/ maybe?

arp-scan

4 883 5.6 C

The ARP Scanner
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
network-mapper

10 568 8.7 Go

Map Kubernetes traffic: in-cluster, to the Internet, and to AWS IAM and export as text, intents, or an image

Project mention: Network Mapper – low privileges, no-eBPF network observability tool for K8s | news.ycombinator.com | 2024-03-19

PortAuthority

2 332 0.0 Java

A handy systems and security-focused tool, Port Authority is a very fast Android port scanner. Port Authority also allows you to quickly discover hosts on your network and will display useful network information about your device and other hosts.
Netdot

3 214 10.0 Perl

Network Documentation Tool
Merhaba

0 70 0.6 Objective-C

Bonjour networking for discovery and connection between iOS, macOS and tvOS devices.
what-vpn

1 59 3.4 Python

Identify servers running various SSL VPNs based on protocol-specific behaviors

Project mention: Actual SSH over HTTPS | news.ycombinator.com | 2023-12-23

From the article:
> Ubiquitous presence of HTTPS allows you to pass your data through very restrictive middle boxes!
This is, in fact, why all — or nearly all — proprietary VPN protocols (so-called "SSL VPNs") implement a mode that initiates a tunnel via HTTPS, at least as a fallback if not as the primary mode of operation: precisely in order to have a mode of operation that works with almost any connection to the global Internet.
I'm one of the main developers of https://gitlab.com/openconnect/openconnect, which implements many such protocols, and wrote https://github.com/dlenski/what-vpn, which sniffs or identifies even more flavors of TLS-based VPN servers.

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).