See it in action
Pair with a QR code, then share text, full-quality photos, and voice — across iPhone and Android.
Private, peer-to-peer messaging over a Bluetooth mesh. Your words hop phone-to-phone through the crowd — and reach iPhone and Android alike.
OffNet Chat sends messages straight between phones over Bluetooth — and other phones running OffNet Chat quietly pass them along. No signal needed, no phone number, no servers.
Bluetooth mesh when friends are near, Wi-Fi for big photos fast, and an optional internet bridge for friends far away. Three switches at the top of your chats — all yours to flip.
Every message is sealed on your phone and opened only on your friend's. Phones in the middle — and the optional cloud relay — carry nothing but scrambled data.
Pair with a QR code, then share text, full-quality photos, and voice — across iPhone and Android.
Short, independent breakdowns of the infrastructure we follow while building OffNet Chat — what shipped, what it means, and the parts worth remembering.
Firecracker isolation exposed as a stateful, addressable sandbox — suspend and resume with memory and disk intact for up to 8 hours. Our summary, analysis, and key pointers.
Read the analysis →We add a new piece whenever something in data, AI, or cloud infrastructure is worth a closer look.
Coming soonFestivals, flights, crowded stadiums, dead zones, or just off the grid — OffNet Chat keeps the conversation going.