Best Subnetter Alternatives & Competitors in 2025

Whatmask is a small C program that will help you with network settings and subnet calculations.

Key whatmask features:

Ease of Use Comprehensive Output Open Source Lightweight

IP Calculator. ipcalc takes an IP address and netmask and calculates the resulting broadcast, network, Cisco wildcard mask, and host range. By giving a second netmask, you can design subnets and supernets....

Key ipcalc features:

Ease of Use Multifunctional Free Tool Quick Results

Open Source

Powerful SaaS integration toolkit for SaaS developers - create, amplify, manage and publish native integrations from within your app with Cyclr's flexible Embedded iPaaS. .

Key Cyclr features:

Pre-built Connectors Embedded Integration Marketplace Low Code Integration Builder SOC 2 Type 2 Accreditation

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🚢 🌊 A simple, handy network addressing multitool 🔎 with plenty of features.

Key ship.sh features:

Simplified Deployment Script Automation Portability User-Friendly Interface

A handy systems and security-focused tool, Port Authority is a very fast Android port scanner.

Key Port Authority features:

User-Friendly Interface Cross-Platform Support Open Source Feature-Rich

Open-source and cross-platform network scanner designed to be fast and simple to use.

Key Angry IP Scanner features:

Free and Open Source Cross-Platform Ease of Use Fast Scanning

Open Source

Présentation et téléchargement de logiciels en freeware pour Windows, développés par Damien PONNELLE.

Key Dipiscan features:

Lightweight Application Easy Network Scanning Comprehensive Data Configurable Options

LanCalculator - IP Subnet Calculator for IPv4/IPv6 Networks - LizardSystems.

Key LanCalculator features:

User-Friendly Interface Comprehensive IP Calculation Time-Saving Multi-platform Support

Advanced IP Scanner shows all network devices, gives you access to shared folders, and can even remotely switch computers off. Download it Free. .

Key Advanced IP Scanner features:

Ease of Use Freeware Fast Scanning Detailed Scanning

Advanced Port Scanner is a fast and free software for port scanning.

Key Advanced Port Scanner features:

Fast Scanning User-Friendly Interface Remote Control Free to Use

FaceNiff is an application that enables users to intercepts the profiles on an open web session while the profiles are connected to the same WiFi network.

Key FaceNiff features:

Network Security Testing Ease of Use

phpipam is an open-source web IP address management application (IPAM).

Key phpIPAM features:

Open Source Web-Based Interface Feature-Rich Integrations

Open Source

Find out about getting started with IP Address Manager, including the latest release notes and documentation as well as training and helpful articles on how to best run SolarWinds IP Address Manager (IPAM).

Key SolarWinds IPAM features:

Comprehensive IP Management Integration with Other Tools User-Friendly Interface Automated IP Address Scanning

Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.

Key Nmap features:

Comprehensive Scanning Open Source Scripting Engine Cross-Platform Support