Cal.com is an open-source scheduling and appointment booking platform that revolutionizes how professionals manage their calendar. A direct alternative to Calendly, Cal.com stands out with its open-source approach, flexibility, and competitive pricing. The platform lets you create customized booking pages, manage multiple event types (one-on-one, collective, round-robin), and automatically sync your Google, Outlook, and Apple calendars. With built-in AI, Cal.com can automate scheduling, suggest optimal time slots, and even handle rescheduling. Cal.com offers advanced features like automated workflows (email/SMS reminders), integrated payments (Stripe), team management with intelligent routing, and a complete API for custom integrations. The platform integrates with 100+ applications via Zapier and offers native integrations with Zoom, Google Meet, Microsoft Teams, and more. The free plan is generous for individual users, while Team and Enterprise plans add team management, advanced workflows, and priority support. Self-hosting is possible thanks to the open-source license.

Gamma is an AI-powered presentation creation tool that automatically generates professional slides from a simple prompt, PDF document, or plain text. Founded in 2020 in the US, Gamma stands out with its document-first approach: instead of building slide by slide, you write your content and the AI transforms it into a visually appealing presentation with layouts, images, and consistent themes. Beyond presentations, Gamma offers a website builder, real-time collaboration, viewing analytics, and flexible export (PDF, PowerPoint, web). The interface is available in 12 languages including French, and AI generation supports over 50 languages. SOC 2 Type II certified, the free plan offers 400 AI credits to get started with no credit card required.