ZeroSign is an ultra-lightweight, self-hosted DocuSign alternative. Zero cloud lock-in, zero external databases. Boots in < 2s with < 60MB RAM. ✨ Visual drag-and-drop PDF studio 🖋️ Sequential multi-party signing & counter-signing 🔒 Per-document 6-digit PIN protection 📜 Tamper-evident SHA-256 audit trails & Certificates 🔍 Independent public verification portal ⚖️ ESIGN & eIDAS compliant, 100% MIT Open Source.