Best Calendar Software - Page 12

TimeOverlap

TimeOverlap is a free group scheduling tool that helps teams, friends, and organizations find the best meeting time. Unlike traditional scheduling tools, TimeOverlap requires no accounts or sign-ups from anyone — organizers or participants. Users create an event, share a link, and participants mark their available time slots. TimeOverlap displays a real-time availability heatmap showing exactly where the group overlaps, making it easy to pick the perfect meeting time. Key differentiators: • Zero friction: No accounts, no sign-ups, no downloads • Timezone-aware: Automatically detects and converts timezones for every participant • Mobile-first: Fully responsive, tap-friendly interface • Preferred times: Participants can mark preferred slots, not just available ones • Free forever: No paid plans, no ads, no feature gates TimeOverlap is ideal for remote teams scheduling standups, students coordinating group projects, and anyone who needs to find a common free time across multiple schedules.

TimeTree

Timezone.io

Virto Shared Calendar

Virto Shared Calendar is an intuitive, cloud-based calendar solution designed to help small and medium-sized businesses, project teams, and client-facing professionals streamline scheduling, collaboration, and resource management. Built to integrate seamlessly with Microsoft 365, Teams, and Outlook, Virto Shared Calendar empowers organizations to manage events, appointments, and team availability—all in one secure, user-friendly platform. Key Features and Benefits: - Easy Sharing & Collaboration: Share calendars with colleagues, clients, or external partners—even if they don’t have a Microsoft account. Flexible permission settings allow you to control who can view or edit each calendar. - Real-Time Sync: Access and update your calendar from any device. All changes are instantly reflected across browsers, Teams tabs, and Outlook, ensuring everyone stays on the same page. - No Admin Required: Virto Shared Calendar is designed for instant setup—no IT expertise or admin permissions needed. Start scheduling and sharing in minutes. - Versatile Use Cases: Whether you need a payment calendar, payroll calendar, sprint planner, customer support schedule, or availability tracker, Virto Shared Calendar adapts to your unique business needs. - Privacy & Security: Built with enterprise-grade security, your data remains protected and compliant with industry standards. Virto Shared Calendar is ideal for small business owners, HR managers, project leads, client service teams, and anyone looking for a reliable, shareable calendar solution without the complexity of traditional enterprise tools: - Affordable & Accessible: With a forever free tier and flexible pricing, Virto Shared Calendar fits any budget. - User-Friendly Experience: The clean, intuitive interface means less time learning and more time collaborating. - Seamless Microsoft Integration: Use Virto Shared Calendar directly in Microsoft Teams, Outlook, or any web browser—no complex installations or overlays required. VirtoSoftware is a trusted provider of productivity and collaboration solutions for Microsoft 365 and SharePoint. With a focus on simplicity, security, and real business value, VirtoSoftware helps organizations worldwide work smarter and achieve more. Try Virto Shared Calendar today and experience a smarter way to organize your team’s time.

VueMinder

WeekCal

WonderCal

OpenScheduler is WonderCal’s MIT-licensed, off-the-shelf scheduling toolkit for people building AI scheduling workflows. It provides ready-to-use MCP, REST, Claude-agent, and webhook components for syncing Google Calendar, Microsoft Outlook, and Apple Calendar. WonderCal’s hosted service adds multi-person availability, group scheduling, required and optional participants, cross-company coordination, fallback availability collection, and completed booking across calendar domains. Together, they let AI assistants coordinate and finish complex meetings without sending participants a booking link or exposing private calendar details.

XMS Calendar

XMS Calendar is a calendar app with an AI assistant - for you, your family or your small team. Add appointments by voice, let the assistant reschedule or find free time, and ask people on WhatsApp, SMS or e-mail whether a slot works - the AI prepares the message, you send it with one tap. New: Family for up to 5 people and Business for teams - one shared calendar, a shared shopping list you can fill by voice, a responsible person for every event and task, and private events that stay private or show only as busy. Each person keeps their own account. Link appointments to contacts and projects, pin sticky notes to any day and see your monthly workload at a glance. Reminders on every device, iCal import/export, data stored in the EU. Runs in the browser and installs as an app on iPhone, Android and desktop without an app store. Available in English, German and Polish. Plans: Personal EUR 4.99, Family EUR 8.99, Business EUR 19.99 per month - 14-day free trial without a card.

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