Side-by-side comparison of AI visibility scores, market position, and capabilities
Open-source scheduling infrastructure with 30K+ GitHub stars; API-first platform for embedding appointment booking into any product or workflow.
Cal.com is the leading open-source scheduling infrastructure platform, enabling businesses and developers to build appointment booking and calendar management into any application. Founded in 2021 and headquartered in San Francisco, Cal.com offers both a hosted SaaS product and a self-hostable open-source version under the AGPLv3 license. The platform integrates with Google Calendar, Outlook, Zoom, Stripe, and hundreds of other tools via a composable API-first architecture.
YC S23 AI-first ERP replacing NetSuite for scaling tech companies with 100+ clients in 9 months; $38.5M Accel Series A Jun 2025 competing with NetSuite and Sage Intacct for AI-native mid-market ERP and SaaS financial management.
Campfire is a United States-based AI-native enterprise resource planning (ERP) company — backed by Y Combinator (S23) with $38.5 million raised including a $35 million Series A led by Accel in June 2025 and a $3.5 million seed in May 2024 from Foundation Capital and Y Combinator — providing scaling startups and mid-size technology companies with a modern AI-first ERP platform that replaces NetSuite, SAP Business One, and Sage Intacct for companies outgrowing QuickBooks and Xero, delivering accounting, revenue management, and financial automation through an AI-powered system that integrates financial workflows without the implementation complexity and total cost of ownership associated with legacy ERP vendors. Founded by John Glasgow and participating in the YC S23 batch, Campfire achieved approximately 100 clients within 9 months of founding, including Advisor360, Rhumbix, and Fooji.
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