Best Calendar Software - Page 5

How Many Calendar Software Products Does G2 Track?

Total Products under this Category: 159

Category Stats (Sep 2026)

  • Average Rating: 4.47/5 (↑0.01 vs Aug 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: GlossGenius (+9.96%) - Among all products in this category, GlossGenius recorded the largest rating increase compared to last month

Last updated: September 29, 2026

How Does G2 Rank Calendar Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 150,600+ Authentic Reviews
  • 159+ 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, Calendly, ClickUp, Zoho Mail, and Reclaim.ai.

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=calendly&focus%5B%5D=clickup&focus%5B%5D=zoho-mail&focus%5B%5D=reclaim-ai)

Fastmail

Fastmail is a privacy-focused email hosting and productivity solution that helps businesses manage professional email communication, calendars, and contacts through a unified, ad-free platform. Founded in 1999 and independently operated from Melbourne, Australia, Fastmail provides organizations with custom domain email hosting, team collaboration tools, and administrative controls without relying on advertising revenue or scanning user data for commercial purposes. Fastmail is designed for small to mid-size businesses, professional teams, agencies, and organizations that require reliable email infrastructure paired with strong privacy practices. It supports companies that want to operate branded email addresses on their own domains. The platform also serves compliance-conscious organizations and some regulated industries through its email retention and archiving capabilities on the highest-tier plan. Fastmail's dedicated business plans offer per-user pricing with the flexibility to mix and match tiers across a team, allowing administrators to assign different storage and feature levels based on individual roles, all while reducing costs. Users can access their accounts through a polished web interface, native desktop applications for macOS, Windows, and Linux, and mobile apps for iOS and Android. The platform supports standard protocols including IMAP, SMTP, CalDAV, CardDAV, and WebDAV, ensuring compatibility with third-party clients such as Outlook and Apple Mail. Fastmail also co-authored and implements JMAP (JSON Meta Application Protocol), an open IETF standard that unifies email, contacts, and calendar synchronization under a single modern protocol. For AI-assisted workflows, Fastmail offers a Model Context Protocol (MCP) server, enabling integration with compatible AI tools and agents. Key features and capabilities include: ● Custom domain hosting and branded email addresses: Businesses can connect multiple custom domains, create individual mailboxes for team members, set up shared email addresses (e.g., support@yourbusiness.com), and configure DNS through a guided setup wizard. ● Team collaboration tools: Shared calendars, a company-wide contact address book, and shared mail folders allow teams to coordinate schedules, maintain centralized contact records, and collaboratively manage inbound communications, each from their own accounts. ● Administrative controls and user management: Account administrators can add or remove users, assign plan tiers, monitor storage usage, manage domains and aliases, and oversee account security settings from a centralized dashboard with consolidated billing. ● Privacy and security architecture: Fastmail does not display ads or scan email content for advertising purposes, and anonymizes remote image fetching to prevent tracking-pixel-based surveillance. All accounts include two-factor authentication, app-specific passwords, and session management. Data is hosted across geographically distributed data centers in the United States and the Netherlands, and the company operates under Australian law. ● Migration and interoperability: Built-in migration tools support importing email, contacts, and calendars. Open protocol support and a public JMAP API enable integration with existing workflows, automation tools, and custom applications.

Average Rating: 4.2/5.0

Total Reviews: 17

How Do G2 Users Rate Fastmail?

  • Has the product been a good partner in doing business?: 8.8/10 (Category avg: 9.1/10)

Who Is the Company Behind Fastmail?

  • Seller: FastMail
  • Year Founded: 1999
  • HQ Location: Melbourne, AU
  • LinkedIn® Page: www.linkedin.com
    311 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services
  • Company Size: 76% Small, 29% Medium

What Are Recent G2 Reviews of Fastmail?

What Are G2 Users Discussing About Fastmail?

Modern Events Calendar

Modern Events Calendar is the ultimate event management solution for WordPress websites. MEC offers a flexible platform for all events (physical, virtual, or hybrid) with extensive integrations like WooCommerce, MailChimp, BuddyBoss, Zapier and Zoom. This amazing tool gives you 30+ event layouts to choose from and even has its own Elementor, Divi and Gutenberg page builders for more precise design possibilities. Modern Events Calendar has also developed niche related tools like Seats, Ticket and Invoice, User Dashboard and advanced Reports addons to make sure you have everything you need from QR code checkin to a complete CRM tool for event management and promotion.

Average Rating: 4.0/5.0

Total Reviews: 4

How Do G2 Users Rate Modern Events Calendar?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.1/10)
  • Sync Multiple Calendars: 6.7/10 (Category avg: 8.7/10)
  • Software Integrations: 6.7/10 (Category avg: 8.2/10)
  • Customized Calendar Notifications: 6.7/10 (Category avg: 8.8/10)

Who Is the Company Behind Modern Events Calendar?

  • Seller: Webnus
  • Year Founded: 2013
  • HQ Location: Vaughan, CA
  • LinkedIn® Page: www.linkedin.com
    8 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 75% Small, 25% Medium

What Do G2 Reviewers Say About Modern Events Calendar?

AI-generated summary from verified user reviews

Pros
  • Users value the ease of use of Modern Events Calendar, enjoying simple installation and intuitive features for event management.
  • Users find easy access with Modern Events Calendar, allowing for quick event management and seamless integration with tools.
  • Users find Modern Events Calendar easy to install and implement, with versatile views and efficient shortcode usage.
  • Users value the robust event management features of Modern Events Calendar, perfect for hybrid events and customization.
  • Users appreciate the versatile event views and seamless integration of Modern Events Calendar that enhance event management efficiency.
Cons
  • Users find the costly add-ons for basic features like RSVP and ticketing frustrating with Modern Events Calendar.
  • Users are frustrated by the high fees for essential features, needing to purchase multiple add-ons for basic functionality.
  • Users desire more customization options in Modern Events Calendar to enhance the user interface and flexibility.
  • Users feel the plugin lacks customizable UI features, limiting their ability to tailor it to their needs.
  • Users find the user experience not intuitive due to the need for multiple paid add-ons for basic functions.

What Are Recent G2 Reviews of Modern Events Calendar?

beams

Experience beams: the next-gen productivity and automation platform for meaningful insights and seamless workflows. See your daily meeting overview on top of your screen. Join calls with a single click or shortcut and always be on time. Check your calendar health and track your progress. Learn how you spend your time and what you can do to improve your work habits. Sync your Slack status with your calendar(s) for deep work. Get into flow by launching a pomodoro focus timer, auto-blocking notifications and auto-syncing your Slack status. Coming soon: Level up your product team's work experience. Understand your teams' work patterns across all your tools, improve productivity and automate workflows.

Average Rating: 5.0/5.0

Total Reviews: 3

How Do G2 Users Rate beams?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.1/10)
  • Sync Multiple Calendars: 10.0/10 (Category avg: 8.7/10)
  • Software Integrations: 10.0/10 (Category avg: 8.2/10)
  • Customized Calendar Notifications: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind beams?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of beams?

Calendars.Cloud

Take your marketing calendar to the next level with Calendars Cloud where we provide customers with a powerful tool to create a beautifully customizable calendar from any standard or custom objects in Salesforce.

Average Rating: 4.5/5.0

Total Reviews: 3

How Do G2 Users Rate Calendars.Cloud?

  • Sync Multiple Calendars: 8.3/10 (Category avg: 8.7/10)
  • Software Integrations: 8.3/10 (Category avg: 8.2/10)
  • Customized Calendar Notifications: 8.3/10 (Category avg: 8.8/10)

Who Is the Company Behind Calendars.Cloud?

Who Uses This Product?

  • Company Size: 67% Large, 33% Small

What Are Recent G2 Reviews of Calendars.Cloud?

What Are G2 Users Discussing About Calendars.Cloud?

Calendarscope

Calendarscope is a full-featured calendar software for planning, managing, and scheduling appointments, meetings, birthdays, vacations, special events. It allows you to view all your events in a daily, weekly, monthly, or yearly overview. You can get a quick look at the events of a single day in any calendar view.

Average Rating: 4.5/5.0

Total Reviews: 3

How Do G2 Users Rate Calendarscope?

  • Sync Multiple Calendars: 10.0/10 (Category avg: 8.7/10)
  • Software Integrations: 10.0/10 (Category avg: 8.2/10)
  • Customized Calendar Notifications: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind Calendarscope?

Who Uses This Product?

  • Company Size: 67% Medium, 33% Small

What Do G2 Reviewers Say About Calendarscope?

AI-generated summary from verified user reviews

Pros
  • Users find Calendarscope to be a helpful tool for both personal and professional reminders and scheduling.
  • Users find Calendarscope's scheduling capabilities invaluable for personal reminders and professional task management.

What Are Recent G2 Reviews of Calendarscope?

What Are G2 Users Discussing About Calendarscope?

DASCalendar

DASCalendar is a productivity platform that empowers people and teams to achieve more by redefining how they manage their time.

Average Rating: 4.8/5.0

Total Reviews: 2

How Do G2 Users Rate DASCalendar?

  • Sync Multiple Calendars: 10.0/10 (Category avg: 8.7/10)
  • Software Integrations: 5.0/10 (Category avg: 8.2/10)
  • Customized Calendar Notifications: 8.3/10 (Category avg: 8.8/10)

Who Is the Company Behind DASCalendar?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of DASCalendar?

DayViewer

DayViewer is an online planner system comprising of multiple productivity tools and systems all inside one easy to use application. Businesses & professionals use for appointments, information management, notes, scheduling jobs and tasks. Plan daily to help manage you time and business and become more effective every day. DayViewer Team Rooms help management and collaboration in a team and is an excellent workforce management solution. Think of Team Rooms as a diary that everyone in the team can access and view what's happening and to stay synchronized.

Average Rating: 4.0/5.0

Total Reviews: 2

Who Is the Company Behind DayViewer?

  • Seller: Dayviewer
  • Year Founded: 2010
  • HQ Location: London, GB
  • Twitter: @dayviewer
    1,303 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    2 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 50% Medium, 50% Small

What Are Recent G2 Reviews of DayViewer?

What Are G2 Users Discussing About DayViewer?

Google Calendar for Confluence

Google Calendar for Confluence empowers teams to embed, sync, and customize multiple calendars directly within Confluence pages. Developed by codefortynine, this app lets users securely integrate Google Calendars into Confluence Cloud using a simple macro. Teams can share calendars without making them public, consolidate project timelines, meetings, and events in one view, and avoid scheduling conflicts. Customization options include calendar size, color coding, timezone settings, and view modes (week, month, agenda), making it easy to tailor the calendar display to fit any Confluence page. Ideal for managing release schedules, resource availability, and company-wide events - all within a familiar workspace

Average Rating: 4.8/5.0

Total Reviews: 2

How Do G2 Users Rate Google Calendar for Confluence?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.1/10)
  • Sync Multiple Calendars: 10.0/10 (Category avg: 8.7/10)
  • Software Integrations: 10.0/10 (Category avg: 8.2/10)

Who Is the Company Behind Google Calendar for Confluence?

Who Uses This Product?

  • Company Size: 50% Medium, 50% Large

What Do G2 Reviewers Say About Google Calendar for Confluence?

AI-generated summary from verified user reviews

Pros
  • Users value the efficiency of Google Calendar for Confluence, streamlining team coordination with real-time updates and easy integration.
  • Users appreciate the seamless integration of Google Calendar for Confluence, enhancing visibility and coordination within teams.
  • Users appreciate the ease of use of Google Calendar for Confluence, enhancing team coordination through simple integration.
  • Users love the easy implementation of Google Calendar for Confluence, facilitating seamless integration with no technical expertise needed.
  • Users love the seamless integration of Google Calendar for Confluence, enhancing visibility and team coordination effortlessly.
Cons
  • Users notice the limited customization options in Google Calendar for Confluence, restricting their ability to tailor calendar views effectively.
  • Users find integration issues frustrating, particularly with permission syncing and limited customization options for calendar views.
  • Users find the missing features in Google Calendar for Confluence, like limited customization and advanced analytics, frustrating.
  • Users experience slow performance when syncing events, impacting efficiency for teams juggling multiple projects.

What Are Recent G2 Reviews of Google Calendar for Confluence?

GroupOffice

GroupOffice is an open-source groupware and CRM platform for enterprises and the public sector. It’s created and maintained by the Dutch company Intermesh. You can self-host the software or run it on Intermesh’s secure cloud infrastructure, where your data remains fully private. Collaborate with integrated file sharing, video conferencing, E-mail, calendar and contact management, project and time tracking, quoting and invoicing, support ticketing, and the Collabora Online office suite. By combining all these tools in a single platform, GroupOffice eliminates the need for multiple separate systems and streamlines your workflow. GroupOffice is easily extensible with custom modules, allowing you to tailor the platform to your specific needs.

Average Rating: 4.2/5.0

Total Reviews: 10

How Do G2 Users Rate GroupOffice?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.1/10)

Who Is the Company Behind GroupOffice?

  • Seller: Group Office
  • Year Founded: 2003
  • HQ Location: ’s-Hertogenbosch, North Brabant
  • Twitter: @GroupOffice
    307 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    5 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 45% Medium, 36% Large

What Are Recent G2 Reviews of GroupOffice?

What Are G2 Users Discussing About GroupOffice?

Levenza AI Calendar

AI-powered scheduling for the enterprise. Levenza AI Calendar empowers executive assistants and other busy professionals to schedule meetings and coordinate availability 10x faster. Levenza serves the world's largest consulting and professional services firms, financial services firms, and Fortune 500 enterprises. Customers include Oliver Wyman, Baird, and Hg Capital.

Average Rating: 5.0/5.0

Total Reviews: 2

How Do G2 Users Rate Levenza AI Calendar?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.1/10)

Who Is the Company Behind Levenza AI Calendar?

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of Levenza AI Calendar?

QReserve

A flexible & user-friendly scheduling platform to easily manage equipment, labs, meeting rooms, amenities, people & more while providing a wide range of reporting & financial capabilities. With QReserve: -Set detailed resource access rules -Collect booking forms -Manage projects -Check-in/out of bookings & auto-cancel late or no-show bookings -Integrate with existing Outlook & Google calendars -Allow on-kiosk booking from live maps/floorplans -Book from defined time slots -Invite guests to bookings & request RSVP's -Invoice & process payments -Check-in/out equipment with integrated barcode reader support -Access activity, actual usage, capacity & utilization data -& so much more!

Average Rating: 4.0/5.0

Total Reviews: 3

How Do G2 Users Rate QReserve?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 9.1/10)
  • Sync Multiple Calendars: 8.3/10 (Category avg: 8.7/10)
  • Software Integrations: 8.3/10 (Category avg: 8.2/10)
  • Customized Calendar Notifications: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind QReserve?

  • Seller: QReserve
  • Year Founded: 2014
  • HQ Location: Hamilton, CA
  • Twitter: @qreserve
    355 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    8 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 67% Large, 33% Small

What Are Recent G2 Reviews of QReserve?

What Are G2 Users Discussing About QReserve?

ScheduleBuilder

ScheduleBuilder is an intuitive online weekly schedule maker that helps individuals turn busy weeks into clear, polished plans. Create class timetables, work schedules, fitness routines, family calendars, and personal plans with a fast drag-and-drop builder—no account required to get started. Customize every schedule with themes, colors, fonts, and backgrounds, then view it seamlessly on desktop, tablet, or mobile. When your plan is ready, export it as a PNG or PDF, print it, share a view-only link, or embed it directly on a website. Whether you are organizing work, study, health, or home life, ScheduleBuilder makes it easy to build a weekly schedule that is practical, personal, and ready to share.

Average Rating: 4.5/5.0

Total Reviews: 2

Who Is the Company Behind ScheduleBuilder?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of ScheduleBuilder?

Timely Event Calendar Software

Timely Event Calendar is a powerful software that helps event professionals easily create, promote, manage and monetize events. All in one app. - Build a beautiful white-label calendar of events for your website. - Create one-time and recurring events. - Import events from CSV and ICS files, as well as iCal, Outlook and Google Calendar, Facebook, Eventbrite, Meetup and other online sources. - Highlight events with multiple media files, views, categories, tags and filters. - Promote events automatically to Facebook and Twitter, and automated newsletters and email marketing. - Monetize from community event submissions. - Earn money by selling tickets to in-person and online events. - Centralize all your event marketing efforts in one platform. And more ...

Average Rating: 4.8/5.0

Total Reviews: 2

How Do G2 Users Rate Timely Event Calendar Software?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.1/10)

Who Is the Company Behind Timely Event Calendar Software?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Timely Event Calendar Software?

UpTo

UpTo enables users to create web calenders for their organizations.

Average Rating: 4.5/5.0

Total Reviews: 2

How Do G2 Users Rate UpTo?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.1/10)
  • Sync Multiple Calendars: 10.0/10 (Category avg: 8.7/10)
  • Software Integrations: 10.0/10 (Category avg: 8.2/10)
  • Customized Calendar Notifications: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind UpTo?

  • Seller: UpTo
  • Year Founded: 2011
  • HQ Location: Detroit, US
  • LinkedIn® Page: www.linkedin.com
    15 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 50% Small, 50% Large

What Are Recent G2 Reviews of UpTo?

What Are G2 Users Discussing About UpTo?

Acollab

Acollab est une plateforme collaborative française qui simplifie la gestion de projets, le partage d'agenda, le partage d’informations et la communication au sein des équipes. Flexible et intuitive, elle permet aux PME, TPE, associations, collectivités et groupes de travail de centraliser leurs échanges et de gagner en efficacité au quotidien. Grâce à Acollab, les équipes disposent d’un espace unique pour organiser leurs projets, suivre l’avancement des tâches, partager des documents, gérer leurs plannings et collaborer en temps réel. Son interface conviviale favorise l’implication de chacun et fluidifie les processus internes, même à distance. Pensé pour s’adapter à tous les environnements professionnels, Acollab propose des fonctionnalités modulables : gestion de projets, espaces collaboratifs, messagerie interne, partage sécurisé de fichiers, gestion d’agendas, mais aussi suivi des temps et outils de reporting. Hébergée en France, la plateforme garantit également une sécurité optimale et le respect de la confidentialité des données. Lien du site internet : Acollab https://www.acollab.com

Average Rating: 4.0/5.0

Total Reviews: 1

Who Is the Company Behind Acollab?

Who Uses This Product?

  • Company Size: 100% Large

What Are Recent G2 Reviews of Acollab?

What Are G2 Users Discussing About Acollab?

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