Cryptographically verified repository authorship and timestamping for legal and audit evidence
Stable domains for local development ports, eliminating conflicts with free open-source tunnels and paid cloud options
Stage
Not given
Not given
Founded
Not given
Not given
Based in
US
Not given
Pricing model
Freemium
Freemium
Pricing
Community: Free. Pro Solo: $79 one-time (perpetual v1.x license) or $29/mo, $290/yr subscription. Team & Agency: $99/mo or $990/yr (up to 10 seats).
Free and Open Source: $0 (unlimited local tunnels, open source); Professional: $49/mo or $490/yr (unlimited cloud tunnels, visitor auth, feedback comments); Team: $149/mo or $1,490/yr (everything in Professional plus unlimited members, teams, shared subdomains, approvals, organization billing); Ente
Key features
RFC 3161 notarization from DigiCert and Sectigo time stamp authorities
Merkle DAG provenance with SHA-256 tree hashing
FRE 902 self-authenticating PDF certificate generation
100% offline verification with open-source verifier
Automated Git hooks for pre-push cryptographic sealing
CLI and native Git plugin integration
CI/CD workflow automation for repository sealing
Dynamic SVG authorship badges for README files
Corporate entity binding and custom LLC configuration
Stable local domains (*.portzero.local) for processes and containers
Cloud tunnels (*.tunnel.portzero.cloud) with HTTPS for LAN and internet access
Support for multiple programming languages
Git worktree support with per-branch URLs
AI agent integration with MCP server
Visitor authentication and access control
Feedback comments on live tunnels
Team access policies and approvals
Audit log (Enterprise plan)
Organization billing with no per-seat charges
What makes it different
Cryptographic evidence under U.S. Federal Rules of Evidence 902 and 28 U.S.C. § 1746
Human authorship defense for copyright and M&A intellectual property verification
Fully offline and open-source verification with zero external dependencies
Enterprise-grade legal compliance for litigation and M&A due diligence
Eliminates port conflicts by assigning stable virtual domains instead of port numbers
Free and open source for local use; no additional cost for cloud features on paid plans
Flat pricing with no meters, overages, or per-seat charges
Agent-ready with native MCP server integration for AI coding agents
Works across multiple OS and languages with zero port bookkeeping required
Port Zero