Advanced IP Scanner might be a bit more popular than Acrylic WiFi Heatmaps. We know about 1 link to it since March 2021 and only 1 link to Acrylic WiFi Heatmaps. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Take a look at Acrylic (acrylicwifi.com). Last I looked, licensing wasn't onerous. Source: almost 3 years ago
Nmap is very handy for doing deep scans, and I use it when I want to do a thorough scan of my network, but for when I want to do a simple ping scan to figure out what is active on the network and responding to pings, I have found Advanced IP Scanner to be very handy (advanced-ip-scanner.com). It will also do basic scans to tell you what if a device is running a web server (great for finding network connected... Source: over 2 years ago
NetSpot - NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
Angry IP Scanner - Open-source and cross-platform network scanner designed to be fast and simple to use
Ekahau HeatMapper - The Free Wi-Fi Coverage Mapping Site Survey Tool
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
TamoGraph Site Survey - Wi-Fi site coverage survey and modelling application
Fing - Discover which devices are connected to any Wi-Fi network, map devices, detect intruders, assess...