No more missed appointments thanks to the 14 best shared calendars [selection 2025].
Your meetings overlap, your phone never stops ringing, your e-mails pile up in your mailbox... how about switching to a shared calendar?
To facilitate your company's internal communication and organization, or to schedule appointments with your customers, the paper diary has become an obsolete solution over the years. Today, the use of an ergonomic and functional online work tool appears to be the best solution for optimizing the management of your activities!
Focus on our selection of 14 free and paid shared calendars to try out in 2025. Save time!
What are the advantages of a shared calendar at work?
Using a shared calendar greatly simplifies your day-to-day business life. After all, why juggle individual diaries when you can synchronize clocks 🕢 ?
Thanks to these tools, you can optimize the management of team schedules: by viewing your colleagues' availabilities at a glance, organizing a meeting becomes child's play!
A shared calendar also promotes transparency. Who's working on what? Who's on leave? You can easily get the answers to these questions... and avoid forgetting them thanks to automatic reminders!
With your customers, it's even more practical. Thanks to online appointment booking, you can offer them your available slots directly. They select what suits them best, with no need for lengthy discussions. The result: time savings, customer satisfaction and fewer missed appointments.
✨Other benefits include:
- projects that don't encroach on critical deadlines;
- tracking of milestones and joint tasks;
- coordination between departments;
- centralization of internal events, from training to anniversaries.
Focus on Google and Outlook shared calendars
Would you like to set up an inexpensive shared calendar with your colleagues? Good news, many free options exist, sometimes directly associated with your email address such as Google and Outlook, the two indestructibles in this field 👑.
Google Calendar
It's hard to bring up the subject of shared calendars without immediately thinking of Google Calendar, which over the years has become the must-have online diary.
This practical solution is directly integrated into your Google account and Gmail suite. It includes all the basic functions you'd expect from a shared calendar:
- Its interface is clear and intuitive. At a glance, you'll see everyone's availability (by month, by week, etc.), then schedule your meetings in just a few clicks: your colleagues will then be notified directly by e-mail. They can also receive reminders to make sure they don't miss a thing.
- Google Calendar also lets you easily create a new calendar, subsets (such as a group for regular meetings) or manage the availability of a meeting room.
Google Agenda
Outlook Calendar
Outlook, created by Microsoft, remains Google's main competitor when it comes to professional messaging.
And like Gmail, Outlook has its own shared calendar application: Outlook Calendar. Use this module to create appointments, organize meetings, display group calendars and more.
The ergonomic Outlook Calendar also lets you display calendars side-by-side or in overlay mode, making it easier to organize and switch between your work and personal calendars.
In the final analysis, Outlook Calendar 's functionalities are very similar to those of Google Calendar. It's your work environment (mailbox used, use of the Microsoft suite, etc.) that will determine which shared calendar you choose.
Outlook
💡 Google Calendar and Outlook Calendar will satisfy most of your needs. However, if you want to go further (online booking system, document sharing functions, etc.), you'll soon find yourself limited. That's why we're now unveiling a selection of 8 tried-and-tested business software products 🤩.
Shared calendar: the 12 best business software 2025
Comparison table of the best shared calendars
1 of 11
| Google Agenda | Outlook |  Acollab |  Atolia |  ClicRDV |  Doodle |  Interstis |  SimplyBook.me |  SmartAgenda.fr |  Vcita |  Zimbra |
|---|---|---|---|---|---|---|---|---|---|---|
| For all companies | For all companies | For companies with 2 to 250 employees | For companies with 2 to 5000 employees | For all companies | For all companies | For companies with 2 to 5000 employees | For all companies | For all companies | For companies with 1 to 50 employees | For companies with 2 to 5000 employees |
| See software | See software | See software | See software | See software | See software | See software | See software | See software | See software | See software |
| Learn more about Google Agenda | Learn more about Outlook | Learn more about Acollab | Learn more about Atolia | Learn more about ClicRDV | Learn more about Doodle | Learn more about Interstis | Learn more about SimplyBook.me | Learn more about SmartAgenda.fr | Learn more about Vcita | Learn more about Zimbra |
Acollab
Acollab is a modular, easy-to-use French collaborative platform that securely centralizes all your team's collaborative tools.
🛠️ Features and benefits :
- an intuitive online agenda, updated in real time, to keep you constantly informed of new meetings and events;
- automatic notifications to inform all participants of events added over time;
- personalized reminders (segmented into minutes, hours, days);
- calendar synchronization with Google Calendar ;
- the ability to assign a confidential character to an event, making it visible only to the administrator.
💰 Rates :
Available from €5/month/user.
Acollab
Atolia
Would you like to streamline communication and collaborative working within your company using a single software package? Discover Atolia, an all-in-one workspace for remote teams.
🛠️ Features and benefits :
- a highly ergonomic shared calendar: its color-coded sorting system optimizes the overview of your activities;
- powerful configuration of reminders, so you can be notified at the most opportune moment;
- the ability to easily synchronize your schedule with all industry-standard formats (Google Calendar, iCal, etc.);
- a tool available in web, software (MacOS and Windows) and mobile (iOS and Android) versions;
- a solution that's easy to implement in your technological ecosystem.
💰 Pricing:
Available from €4/month/user.
Atolia
ClicRDV
With twelve years' experience and over 20,000 customers, ClicRDV has become a key player in online appointment scheduling.
🛠️ Features and benefits :
- real-time management of your schedule, and greater visibility for your customers;
- scheduling by employee and by sales outlet;
- a made-to-measure solution that can be configured as you wish;
- the ability to feed your customer database and launch SMS or emailing campaigns;
- statistics to analyze your performance (sales by period/collaborator, point-of-sale occupancy rate, origin of appointments, etc.). So you can target your sales actions more precisely!
💰 Rates :
Available from €29/month.
ClicRDV
Doodle
Well-known to home users, Doodle also offers a range of services for businesses, designed to simplify the planning of meetings and events.
🛠️ Features and benefits:
- plan group or individual meetings in just a few clicks;
- the ability to connect your Google Calendar, iCloud, Microsoft Office 365 and MS Exchange Online calendars to view your availability;
- customization of the tool (logo, colors, etc.) to match your corporate image;
- the generation of attractive meeting descriptions with the help of artificial intelligence;
- automatic inclusion of a link to your videoconferencing tool in your booked events.
💰 Rates:
Free version.
Paid version available from €6.95/month/user.
Doodle
Interstis
Interstis is an easy-to-use French collaborative solution that securely centralizes all the collaborative tools your team needs.
🛠️ Features and benefits:
- synchronization of all events in your professional and personal agendas ;
- authorize access to your calendar for any collaborator;
- superimpose your calendar with those of your colleagues to check their availability;
- position recurring appointments (weekly or monthly) to save time;
- control the confidentiality of your agenda thanks to various visibility options.
💰 Rates :
Available from €14/month for 1 project.
Interstis
Joynit
Joynit is an innovative social platform, made in France, that lets you animate a community through an interactive shared calendar, totally free of charge, with unlimited members.
🛠️ Features and benefits :
- a community profile page, online schedule and discussion space for members;
- secure member management with 3 levels of accessibility (public with free access, private with restricted access by invitation or sponsorship code, or professional with 100% controlled access);
- schedule connection to your website in just a few clicks, with automatic data updates;
- notify members of every new open event posted to the shared calendar;
- connect your calendar to your event and create scheduled reminders before the big day.
💰 Pricing:
Free version.
Paid version available from €9/month.
Planning Moduleo
Planning Moduleo is a comprehensive, multi-site, multi-resource collaborative planning system designed to coordinate teams, vehicles and equipment within companies.
🛠️ Features and benefits:
- a multi-resource agenda to manage team, vehicle and equipment schedules simultaneously, with customizable views;
- geolocation of schedule tasks, practical for regulating interventions and movements in the field;
- Moduleo mobile application available on Android and iOS;
- real-time tracking for instant access to key information;
- invitation management via email and SMS reminders.
💰 Prices:
Prices available on request.
SimplyBook.me
With 50,000 customers worldwide and over 30 million reservations processed, SimplyBook.me is a highly intuitive online reservation software that meets the most demanding needs of small businesses and large groups alike.
🛠️ Features and benefits :
- an ultra-complete reservation management module, with form creation, loyalty programs included, synchronization with Google Calendar and Outlook, reservations via Facebook and Instagram, etc ;
- a dynamic booking calendar, updated in real time, to manage all your bookings, payments and customers in a single place;
- an efficient, customizable sales management module;
- reservation site templates, customizable to your colors;
- a wide range of payment systems: accept deposits and all types of payment from your customers (PayPal, Stripe, etc).
💰 Rates :
Available from €8/month/50 users.
SimplyBook.me
Smart Agenda
Smart Agenda offers a host of features that will benefit both your internal organization and your customer management.
🛠️ Features and benefits :
- sharing of your calendar with your various departments, for improved synchronization ;
- a powerful, feature-rich online appointment booking service, including automatic SMS reminders and online payment;
- easy integration with your Wordpress or other information systems, thanks to the Smart Agenda API;
- customize your calendar to suit your needs. A free consultant will help you set it up in just 15 minutes. You can also call on Smart Agenda's developers to add specific functionalities to the tool (webservices, dedicated interfaces, etc.);
- all your data is hosted in France.
💰 Rates :
Available from €39/month.
SmartAgenda.fr
TimeTree
TimeTree is an intuitive shared calendar application which, with its premium offer, is perfectly suited to the needs of professionals.
🛠️ Features and benefits:
- easy creation of collaborative calendars, enabling all team members to view and edit events ;
- add attachments, comments and images to events;
- synchronization with external Android, Apple, Google and Outlook calendars;
- vertical view functionality, which displays events on an hourly basis, making it easier to visualize availability;
- the ability to mark important events to distinguish priority tasks and ensure their efficient follow-up.
💰 Pricing:
TimeTree Premium available at $4.49/month.
vCita
More than just a shared calendar and online booking software, vCita's ultra-complete tool truly enhances the customer experience.
🛠️ Features and benefits:
- manage your schedule and appointments, while remaining synchronized with your calendar (Google Calendar, iCal, Microsoft Outlook, etc.);
- Receive appointment requests from your website, Facebook page or vCita customer portal at any time;
- obtain payments quickly, and send quotes, invoices and receipts in seconds;
- improve your knowledge of your customers thanks to their history, and send more targeted and relevant SMS and email campaigns;
- secure access for your customers to their personal page at any time, to modify an appointment, pay an invoice, etc.
💰 Rates :
Available from €19/month/user.
Vcita
Zimbra
The popular Zimbra collaborative software suite is available in two versions: an open source version and a network version.
🛠️ Features and benefits:
- ergonomic, easy-to-manage shared calendar;
- fully customizable recurring event settings;
- a group scheduling wizard that finds the optimum time and place for your meetings in a matter of seconds: automatic suggestion of the next available time and place, one-click preview of conference rooms available at the selected time, etc. ;
- easy management of flows and access rights to multiple calendars;
- add attachments.
💰 Pricing :
Available from €0.99/month/user.
Zimbra
What's in a shared calendar?
Meeting your needs, those of your employees and those of your customers: that's the strength of a shared calendar.
Within your company, it improves internal organization and communication.
On the customer side, it enhances the experience and multiplies business opportunities.
The result is significant time and cost savings. All of this is made possible by the use of solutions that are often inexpensive in relation to the benefits they generate, or even free if you are content with a basic in-house use of the tool.
Ready to take the plunge and leave your good old paper diary in the closet? All that's left to do is choose the software best suited to your needs from among those presented above, and take full advantage of the promise of the shared calendar.
Currently Editorial Manager, Jennifer Montérémal joined the Appvizer team in 2019. Since then, she's been putting her expertise in web copywriting, copywriting and SEO optimization to work for the company, with her sights set on reader satisfaction 😀 !
Trained as a medievalist, Jennifer took a break from castles and manuscripts to discover her passion for content marketing. She took away from her studies the skills expected of a good copywriter: understanding and analyzing the subject, rendering the information, with a real mastery of the pen (without systematically resorting to a certain AI 🤫).
An anecdote about Jennifer? She distinguished herself at Appvizer with her karaoke skills and boundless knowledge of musical nanars 🎤.