O'Reilly Systems Corporation

Chat with people who are actually here.

MeshMack is hyper-local, geofenced, peer-to-peer chat. Messages stay in your neighborhood. No accounts. No central chat servers. End-to-end encrypted on the phones that meet.

Get the app See how it works

Built for the block, not the cloud

MeshMack finds people around you over local radios and talks device-to-device. Your chats are not stored on our servers.

Places

Save campus, a bar, or a neighborhood. Nearby auto-listens while you are inside. Outside, it stays quiet.

No central chat backend

Discovery and messages run device-to-device. Same Wi‑Fi is the reliable chat path. Bluetooth is presence only — not chat. We do not host your DMs.

Friends, not a social graph

Mark people as friends on your phone. Friend circle is outbound-only — no server matching people for ads.

Optional support

Core mesh stays free. A one-time Supporter unlock is thanks, not a paywall on discovery or chat.

App Store and Google Play

MeshMack is a product of O’Reilly Systems Corporation. Public listings will appear here when they go live. Until then, internal testing is underway — there is no waitlist.

Support