The developers offer a legitimate free version of Connectify Hotspot that allows you to turn your PC into a Wi-Fi hotspot without any ads or subscription costs.
: You can enable a hotspot directly in your system settings. Go to Settings > Network & Internet > Mobile hotspot to share your connection without extra software.
: Both mobile platforms have native "Mobile Hotspot" or "Tethering" options in their connection settings to share data with other devices.