Live · v0.10.17 on the VS Code Marketplace
One workspace,
every machine.
Sessyn keeps your full VS Code workspace in sync across the machines you trust — including the gitignored, sensitive, non-repo files git was never meant to carry. End-to-end encrypted, zero-knowledge coordinator, direct machine-to-machine transfer.
End-to-end encrypted
Files are encrypted with AES-256-GCM on your machine. The coordinator never sees plaintext — and after a successful transfer, doesn't keep the ciphertext either.
Direct machine-to-machine
Sessyn brokers a WebSocket between your trusted machines and gets out of the way. Your files flow peer-to-peer; the VPS only holds metadata, presence, and trust.
Three-way reconciliation
Per-machine generation checkpoints + workspace generations on the coordinator. Your local edits never get clobbered by a stale push from somewhere else.
Built for the files git can't carry
.envand other gitignored secrets- Editor settings, keybindings, snippets, MCP servers
- Local databases, scratch notes, ad-hoc scripts
- Anything you'd otherwise sync over Dropbox or iCloud — but encrypted
Ready to sync?
Install the extension, sign in with Google, pair a second machine, and watch them stay in lockstep.