Web

• snap-shot-it - Smarter snapshot utility.
• Harvester - Web crawling and document processing through a usable interface.
• Paskto - Passive web scanner.
• Squidwarc - High fidelity, user scriptable, archival crawler that uses Chrome or Chromium with or without a head.

Network map

• evilscan - Simple network scanner.
• nmap - Wrapper interfacing with local Nmap installation.
• tcpie - CLI tool to ping any TCP port.
• wifi - Tool to manage connections, scans, etc.

IP

• is-reachable - Check if servers are reachable.
• is-online - Check if the internet connection is up.
• public-ip - Get your public IP address - very fast!.
• internal-ip - Get your internal IP address.
• ipaddr.js - IP address manipulation library.
• is-local-ip - Check that a given ip address is private.
• ip-ptr - Get the PTR name for a given IPv4 or IPv6 address.

Port

• get-port - Get an available port.
• port-numbers - Get information on network port numbers and services, based on IANA's public listing.
• tcp-port-used - Simple module to check if a TCP port is already bound.

CIDR

• cidr - Library for manipulating IP addresses and subnets using CIDR notation.
• cidr-tools - Tools to work with IPv4 and IPv6 CIDR network lists.
• is-cidr - Check if a string is an IP address in CIDR.

ARP

• arp-scan - Simple apr-scan wrapper.
• oui - Look up MAC addresses for their vendor in the IEEE OUI.
• getmac - Get the computer MAC address.

DHCP

• net-ping - Ping and trace route to many hosts at once.
• dhcp - DHCP client and server.

Network

• slowloris.js - DDoS script
• mitm - Intercept and mock outgoing network TCP connections and HTTP requests.
• toxy - Hackable HTTP proxy for resiliency testing and simulated network conditions.

DHCP

• text2cpe - Reversed sorta implementation of CPE Name detection in ShoVAT based on research paper.
• PegaSwitch - Exploit toolkit for the Nintendo Switch.

DNS

• whonow - Malicious DNS server for executing DNS Rebinding attacks on the fly.

Reverse shell

• eslint-plugin-security - This project will help identify potential security hotspots, but finds a lot of false positives which need triage by a human.
• electronegativity - Static analysis tool to identify misconfigurations and security anti-patterns in Electron applications.
• repo-supervisor - Scan your code for security misconfiguration, search for passwords and secrets.
• vuln-regex-detector - Detect vulnerable regexes. REDOS, catastrophic backtracking.
• eslint-plugin-security - This project will help identify potential security hotspots, but finds a lot of false positives which need triage by a human.

Dependencies

• run-npm-audit - Use npm audit programmatically.
• npm-check-updates - Find newer versions of package dependencies than what your package.json or bower.json allows.
• auditjs - Audits a package.json using the OSS Index v3 REST API to identify known vulnerabilities and outdated package versions.
• npm-check-updates - Find newer versions of package dependencies than what your package.json or bower.json allows.
• depcheck - Check your npm module for unused dependencies.
• auditjs - Audits a package.json using the OSS Index v3 REST API to identify known vulnerabilities and outdated package versions.

Dependencies

• Qiskit.js - True random numbers generation through quantum computing.
• crypto-js - Library of crypto standards.
• rsa - Pure JavaScript RSA library.
• seedrandom - Seeded random number generator for JavaScript.
• upash - Unified API for all password hashing algorithms.

Dependencies

• nodeCrypt - Linux Ransomware written in NodeJs that encrypt predefined files.
• malware-jail - Sandbox for semi-automatic Javascript malware analysis, deobfuscation and payload extraction.
• virustotal-api - [Virustotal](https://www.virustotal.com) API v2.0 wrapper.
• MalwareWorld - System based on +500 blacklists and 5 external intelligences to detect internet potencially malicious hosts.
• box.js - Utility to analyze malicious JavaScript.

radare

• r2pipe - Pipe bindings for radare2.
• frida-node - Bindings for Frida.
• r2Frida - Radare2 and Frida better together.

Checklists

• npm security cheat sheet - 10 npm Security Best Practices.
• Best Practices - Security section of this general list.
• Strong Node.js - More than 100 security checks for your Node.js API.
• Best Practices - Security section of this general list.

Vulnerable apps

• OWASP Juice Shop - Probably the most modern and sophisticated insecure web application.
• DVNA - Damn Vulnerable Application is a simple application to demonstrate OWASP Top 10 Vulnerabilities and guide on fixing and avoiding these vulnerabilities.
• OWASP NodeGoat - Provides an environment to learn how OWASP Top 10 security risks and how to effectively address them.
• OWASP Juice Shop - Probably the most modern and sophisticated insecure web application.

• Pown.js - Security testing an exploitation toolkit.
• Brosec - Interactive reference tool to help security professionals utilize useful payloads and commands.
• netcat - Netcat port in pure JS.
• Honeypot - Low interaction honeypot that displays real time attacks.
• default-gateway - Get the default network gateway, cross-platform.

Web

• ZAP API - Implementation to access the OWASP ZAP API.
• got - Simplified HTTP requests.

Web

• Sherlock.js - Find usernames across over 75 social networks - Remake of sdushantha/sherlock.
• whois - Whois protocol client.

Exposed

• censys - Unofficial wrapper for the Censys API.

Geolocation

• iplocation - Get IP location information using various providers.
• ipify - Get your public IP address.

DHCP

• nodebuster - Yet another DirBuster clone, to brute-force directories and files on HTTP(S) servers.
• subquest - Fast, Elegant subdomain DNS scanner.

DHCP

• octo - Standard library for fuzzing.
• eslump - Fuzz testing JavaScript parsers and suchlike programs.
• sinkdweller - A simple wrapper for radamsa.
• Faker.js - Generate massive amounts of realistic fake data.

Reverse shell

• Reverse Shell aaS - Easy to remember reverse shell that should work on most Unix-like systems.
• alveare - Multi-client, multi-threaded reverse shell handler.