Best Calendar Software - Page 12

How Many Calendar Software Products Does G2 Track?

Total Products under this Category: 167

Category Stats (Oct 2026)

  • Average Rating: 4.47/5 The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Modern Events Calendar (+5.35%) - Among all products in this category, Modern Events Calendar recorded the largest rating increase compared to last month

Last updated: October 23, 2026

How Does G2 Rank Calendar Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 151,200+ Authentic Reviews
  • 167+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Calendar Software

G2 Grid® for Calendar Software plotting products by satisfaction and market presence

Highlighted products: Google Workspace, Microsoft Outlook, Zoom Workplace, Microsoft 365, ClickUp, Calendly, Reclaim.ai, and GlossGenius.

Underlying data: [Grid® JSON](https://www.g2.com/categories/calendar-software/grids.json?focus%5B%5D=google-workspace&focus%5B%5D=microsoft-outlook&focus%5B%5D=zoom-workplace&focus%5B%5D=microsoft365&focus%5B%5D=clickup&focus%5B%5D=calendly&focus%5B%5D=reclaim-ai&focus%5B%5D=glossgenius)

WeekCal

Who Is the Company Behind 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.

Who Is the Company Behind WonderCal?

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.

Who Is the Company Behind XMS Calendar?

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Neeraja Prakash
NP
Researched and written by Neeraja Prakash
Updated March 6, 2025