| What it does | An extensible platform for infrastructure management
| Free JSON API for construction calculators with test vectors and building codes
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Open source
| Open source
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| Pricing | Not given
| Free under CC BY 4.0 licence
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| Key features | - Role-based access control (RBAC) for granular access control
- Built-in auditing with integration points for external systems
- Single sign-on support
- Resolver pattern for resource discovery
- Server-generated forms for API-frontend synchronization
- Extensible architecture with configuration-driven deployment
- Deployable as single binary with backend and frontend
- Extensive logging and stats capabilities
| - 1,173 construction calculators with full inputs and test vectors
- 3,485 published test vectors for validation
- No authentication key or rate limits required
- Citations to building standards with section numbers
- Executable API for running calculations on request
- MCP server integration for AI assistants
- 79 job takeoffs with calculator sequences
- Cross-market glossary in US, Canadian, UK and Australian usage
- Corrections ledger tracking confirmed errors
- Unit conversion with exact statutory factors
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| What makes it different | - Highly extensible with extension points throughout the stack for custom integrations
- Single binary deployment for simplicity
- Combines safety-focused design with flexible extensibility
- Frontend components designed for developers with limited frontend experience
- Built for discovery with resolver pattern for multiple resource names
| - No API key required with no rate limits or quotas
- CC BY 4.0 licence allows commercial use and redistribution
- Every calculation cited to specific building code sections
- Pinned test cases prevent silent changes to published figures
- Complete accessibility with CORS support for browser use
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 33 ● no change since last check | Not checked yet |
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| Trust Flow (Majestic) | 8 | 0 |
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| Citation Flow (Majestic) | 27 | 26 |
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| Referring domains (Majestic) | 58 | 29 |
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