There are 3 repositories under wifi-fingerprinting topic.
Source code for M.T. Hoang, B. Yuen, X. Dong, T. Lu, R. Westendorp and K. Reddy, “Recurrent Neural Networks for Accurate RSSI Indoor Localization,” IEEE Internet of Things Journal, 2019
Source code for the paper "A Soft Range Limited K-Nearest Neighbors Algorithm for Indoor Localization Enhancement"
Wifi based Indoor Localization system utilizing Wi-Fi Fingerprinting Technique - AI/ML Approach
Flask with whereami - Client request nearby WiFi signals to server then machine learning to predict where you are
Android wifi fingerprint locator
Android app uses wifi-fingerprinting and google maps to collect geo location data