Cal.com
Open-source scheduling infrastructure for everyone. Self-hostable alternative to Calendly with custom workflows, team scheduling, and extensive API.
6 tools available
Email clients, calendar apps, and scheduling tools
Browse and compare the top email & calendar tools. Popular options include Cal.com, ProtonMail, Gmail, Outlook, Calendly, and more. Each tool page includes curated alternatives with honest comparisons and pricing breakdowns. Use the filters below to narrow by pricing model.
Open-source scheduling infrastructure for everyone. Self-hostable alternative to Calendly with custom workflows, team scheduling, and extensive API.
End-to-end encrypted email service based in Switzerland. Features zero-access encryption, self-destructing messages, and privacy-focused alternative to Gmail.
Free email service by Google with 15GB storage, smart categorization, spam filtering, and integration with Google Workspace. Used by billions worldwide.
Email and calendar application by Microsoft. Features focused inbox, calendar scheduling, contacts, tasks, and deep integration with Microsoft 365 apps.
Online scheduling platform eliminating back-and-forth emails for finding meeting times. Features booking pages, team scheduling, integrations, and automated reminders.
Premium email client designed for speed and productivity. Features AI triage, keyboard shortcuts, scheduled send, undo send, and read receipts.