Apple AirTags, once the undisputed leader in Bluetooth trackers, now face stiff competition from Google, Samsung, and other companies like Chipolo and Pebblebee. These competitors have developed their own finding networks, rivaling Apple's vast network of iPhones. This guide reviews and tests the top Bluetooth trackers available, highlighting how they function and helping users choose the best option for tracking items like keys, backpacks, and luggage in 2025.