Side-by-side comparison of AI visibility scores, market position, and capabilities
Open-source scheduling infra with 30K+ GitHub stars; $25M Series A (2023); API-first appointment booking embeddable into any product; self-hostable under AGPLv3 license. Founded 2021, SF.
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.
San Francisco no-code relational database and app builder for 450,000+ organizations; $1.36B raised at $11.7B valuation competing with Notion and Monday.com for team workflow automation and custom operations apps.
Airtable is a San Francisco-based no-code database and app-building platform enabling teams to build custom applications, workflows, and data management tools without engineering resources — combining the familiarity of spreadsheet interfaces with relational database capabilities, formula logic, API integrations, and configurable views (grid, kanban, calendar, gallery, form). Founded in 2012 by Howie Liu, Andrew Ofstad, and Emmet Nicholas and backed with $1.36 billion raised from Benchmark, Coatue, and Greenoaks at a $11.7 billion valuation (2021), Airtable serves 450,000+ organizations including Netflix, Expedia, and Amazon for operations, marketing, and product management use cases.
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