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Alby

Browser extension for Bitcoin Lightning payments and Nostr signing. Provides a non-custodial wallet with seamless web integration via the WebLN standard.

Features​

  • Lightning wallet — Send and receive bitcoin over Lightning directly in the browser
  • Nostr signing — Sign Nostr events without exposing private keys to websites
  • LNURL & Lightning Address — Easy payments to Lightning addresses (e.g., cascdr@getalby.com)
  • WebLN provider — Websites can request payments and invoices via standardized browser API
  • Keysend — Direct payments to node pubkeys

Use Cases​

  • Tipping on Nostr clients (Damus, Snort, Astral)
  • Paying for AI services like CASCDR
  • General Lightning web payments
  • Nostr identity management
  • Developer testing via WebLN integration

Model​

  • Non-custodial — you control your keys (seed backup available)
  • Browser-based convenience with hardware-wallet-like signing for Nostr
  • Acts as a WebLN provider that web apps can detect and communicate with

Resources​