Side-by-side comparison of AI visibility scores, market position, and capabilities
Open-source Google Zanzibar-inspired authorization service; fine-grained permissions for multi-tenant SaaS and AI agent access control at sub-millisecond latency.
Authzed (now SpiceDB) is an open-source, Google Zanzibar-inspired authorization service that enables developers to define and evaluate fine-grained permissions at scale, decoupling authorization logic from application code. Founded in 2021 and headquartered in San Francisco, Authzed built SpiceDB — an open-source implementation of Google's Zanzibar authorization system that powers Google Drive, Google Docs, and YouTube's permission systems — making enterprise-grade authorization accessible to development teams without Google-scale infrastructure.
SF cloud infrastructure cost management for engineers showing AWS/GCP costs in pull requests before deployment; YC W21 $17.2M at 3,500 companies including 10% of Fortune 500 competing with CloudHealth for FinOps.
Infracost is a San Francisco-based cloud cost management platform — backed by Y Combinator (W21) with $17.2 million raised including a $15 million Series A led by Pruven Capital with Insight Partners in November 2025 — providing engineers with real-time infrastructure cost visibility during the development workflow, surfacing estimated cloud costs directly in pull requests before code is merged to production. Serving 3,500+ companies including 10% of the Fortune 500, Infracost integrates with Terraform and infrastructure-as-code workflows to calculate and display the monthly cost impact of infrastructure changes at the point in the workflow where engineers can still make cost-aware decisions.
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