AirDrop is great until the person you’re sending to has a ThinkPad. Blip lives in the menu bar and beams files device-to-device the same way — pick a contact (identified by email), drop a file in, it streams directly without ever sitting on a Blip server. Works on the same Wi-Fi or across the internet, no size cap, and the Mac/Windows/Linux/iOS/Android clients all talk to each other. Free for personal use.