Stable domains for local development ports, eliminating conflicts with free open-source tunnels and paid cloud options
Stage
Not given
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
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
Interactive GPU/Mac checker
Coverage of language, image and video models
Memory estimates from official sources and benchmarks
Runs entirely in browser with no accounts
Open data export under CC BY 4.0
Independent review of data accuracy
Linked sources for all numbers
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
Free and independent, no ads or sponsorships
Uses only official sources and published benchmarks
Transparent labeling of estimates vs official measurements
No personal data collection or cookies
Fastest-moving sources rechecked weekly
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
RigCheck
Port Zero