Flawless organization? It's possible with a good online diary [comparison].
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On the web, the choice of online diaries is particularly vast. All designed to help users optimize and facilitate their organization, they offer different functionalities to adapt to the specific needs of all business sectors.
In other words, choosing an online planner requires rigorous study of its specific features.
Appvizer simplifies the task by bringing together the best solutions currently available. For each of them, you'll find a brief description highlighting the key features that can make all the difference.
Comparison table of the best online diaries in 2025
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 Google Agenda |  Asana |  ClickUp |  Doodle |  Notion Calendar |  Teamup |
|---|---|---|---|---|---|
| For all companies | For companies with more than 1 employees | For all companies | For all companies | For all companies | For all companies |
| See software | See software | See software | See software | See software | See software |
| Learn more about Google Agenda | Learn more about Asana | Learn more about ClickUp | Learn more about Doodle | Learn more about Notion Calendar | Learn more about Teamup |
Google Calendar
Used by many Internet users, Google Calendar is part of the Google suite. This gives it a major advantage: some of the most advanced connectivity on the market. Linking this solution with all the other tools of this search engine is easy and practical.
Available on PC and mobile, Google Calendar is completely free. To access its many features, use your existing Google account. Just one click is all it takes to join the clear, intuitive interface of this online diary and take advantage of its multiple tools without delay.
Tailored to the needs of professionals, Google Calendar offers indispensable flexibility for users who manage multiple calendars. By superimposing them in a single view, you can view all data simultaneously.
Among the key functions, alerts before the scheduled meeting time are very useful. Add automatic insertion of events from incoming e-mails and subscription to other calendars, and you've got a truly versatile assistant!
🤩 Google Calendar's little extra: each user can share his or her own calendar with one or more people. This feature is very useful for businesses.
Google Agenda
Microsoft Outlook Calendar
Outlook is an online calendar management solution with features similar to Google Calendar. Part of the Office suite, it integrates into your Outlook mailbox and links up with all the tools offered by Microsoft.
While this solution doesn't match its predecessor in terms of flexibility, it does extend its functionalities beyond the calendar. For example, you can simplify your daily organization with direct access to your mailbox, or manage all your contacts and tasks.
As you probably already know, Outlook is a free tool. However, software that can be integrated is often not free.
Microsoft Outlook Calendar can easily be described as a high-performance classic electronic organizer. It's perfect for small businesses that want to take advantage of the usual features of this type of tool.
🤩 Microsoft Outlook Calendar's little plus: a clear, intuitive interface for easy use.
Agenda en ligne.com
Popular with healthcare professionals, Agenda en ligne.com's appointment management solution can be accessed from computers, tablets and smartphones. Features include appointment reminders to contacts, online appointment booking, secure shared diary and teleconsultation.
This highly intuitive management tool makes it easy to search for patient/client records. SMS appointment reminders are automated, to lighten the workload for practitioners.
The mobile application is ideally designed to enable users to benefit from all the advanced features of this electronic diary while on the move.
Agenda en ligne.com has the advantage of an available and responsive support team. It supports all its users and provides invaluable advice to those who request it.
All in all, this solution has established itself today as a benchmark in appointment management digitization for medical practices.
🤩 The little extra of Agenda en ligne.com: the ability to extend your visibility on the web. This software takes care of your presence on search engines so as to improve your positioning and notoriety.
Asana
Asana joins the list of the best online diaries. Here, too, users can do more than just notify tasks and events on specific dates. With this particularly powerful collaborative project management tool , you can do much more than just efficiently manage your schedule.
Designed to meet the demands of professional use, the task management functionality is extremely practical. Available on the free version of this software, it includes task creation, assignment and specialization. Each task can be tracked in real time.
Also in the free version, the online agenda offered by Asana can be shared with up to 15 collaborators. This in-depth solution therefore meets the requirements of companies looking to develop collaborative working.
🤩 Asana's little extra: it's a complete work management tool. Thoughtfully designed to help teams work together, track task progress and delegate responsibilities, it offers a host of advanced features to exploit as needs dictate.
Asana
ClickUp
A multifunctional application for centralized work management, ClickUp provides powerful functionality for companies to efficiently manage their schedules. Within a collaborative workspace, users can view and manage priorities and deadlines in real time.
Customization options, such as shared calendars, give you a global view of upcoming events, tasks, meetings and projects. To facilitate schedule synchronization, this solution guarantees compatibility with external digital tools such as Outlook and Google Calendar.
Each user has access to an automated notification and reminder system to facilitate day-to-day project management. A particularly interesting feature for companies: the creation of unique workflows by team.
Note that this online diary also adapts to the needs of personal use.
🤩 ClickUp's little extra: this all-in-one tool integrates features perfectly suited to teamwork. The free version offers access to all the functions of an efficient electronic diary.
ClickUp
Doodle
The Doodle planning platform is tailored to the needs of small, medium-sized and large companies. Users will find effective functionalities for organizing their working days, managing complex projects, planning events and developing steering processes.
This easy-to-use digital tool features an ergonomic, intuitive interface. Ideally designed to simplify the planning of collaborative work, it enables users to share their availability slots and invite their colleagues to define a schedule adapted to each individual. In this way, Doodle saves you precious time.
In short, Doodle simplifies the organization of internal and external meetings. Note, moreover, that integrations with the following tools are possible: Outlook, Google Meet or even Microsoft Teams.
🤩 Doodle's little extra: this user-friendly planning tool offers different packages to suit every need. You can choose between the free version, the Professional Package and the Team Plan.
Doodle
Joynit
Versatile, simple and intuitive, the Joynit shared calendar is easy to configure. Suitable for companies, associations and local authorities, it lets you centralize all your events on an interactive shared calendar. In other words, this tool lets you invite the people you want to communicate more effectively within your company.
Designed to optimize your daily organization, this solution lets you create and configure a schedule in record time. All you have to do is follow the guide, then share a simple link to give your colleagues access to the schedule.
If you wish, you can set up multiple spaces to link several calendars, so you can get a global view of your organization.
For each event created on Joynit, access a multitude of functions designed to simplify your management work: reminders and reminders sent to guests, creation of surveys, integration of various documents, discussion space dedicated to exchanges linked to the event created, sending of invitations by e-mail and notifications, etc.
🤩 Joynit's little extra: the user's agenda can be shared via a simple link. Guests don't have to create an account to take part in an event.
Notion Calendar
Flexible and comprehensive, the Notion Calendar online planner lets users personalize and optimize the management and organization of their tasks. Free of charge, it lets you design your own digital workspace. Count on efficient features to plan your daily tasks, while following your aesthetic preferences for greater ease of use.
Suitable for managing simple tasks to the most complex projects, Notion Calendar can also generate text. Specially designed to make organization easier, this solution incorporates an AI capable of suggesting ideas, helping you draft documents and guiding your searches based on key words. There's also a function for centralizing data that you don't have to memorize.
This intuitive, customizable interface makes creating a timetable child's play. You can then choose how you want to view it: as a calendar, a table or sorted by task type.
Perfectly suited to collaborative working, the free version of Notion Calendar lets you invite up to 5 users.
🤩 Notion Calendar's little extra: this versatile platform integrates files in different formats and videos from YouTube to extend access to resources.
Notion Calendar
Planning Moduleo
Planning Moduleo is a multi-site, multi-resource collaborative organizer that enables companies to coordinate the schedules of their teams. Ideally designed to organize working hours efficiently and effectively, this solution offers several views, updated in real time.
Whether for employees, vehicles or machines, schedules can be organized by site and by department. This global view of the company's resources ensures that tasks are carried out efficiently and saves valuable time.
Able to meet all the organizational needs of professionals, Planning Moduleo creates events with validation requests. And thanks to its mobile application, you can access all the software's functionalities in all circumstances, even on the move.
In addition to guaranteeing regular, automatic updates, this online planning tool boasts top-notch customer service.
Available on request, rates are defined according to the number of users.
🤩 Planning Moduleo's little extra: the geolocation function for tasks, which helps optimize the regulation of company activities.
Teamup
The Teamup online calendar deploys comprehensive planning and collaboration functions. Intuitive and user-friendly, its interface gives you access to key organizational functions.
With Teamup, you can schedule tasks, events and meetings, track and share information, customize access permissions and choose a calendar view perfectly suited to your needs. For truly efficient organization, create custom fields and assign events to multiple schedules simultaneously.
Particularly interesting in terms of accessibility and sharing, this solution facilitates your communication by allowing calendars to be shared via simple links. These can be transmitted both internally and externally.
Encouraging collaborative working, Teamup lets different users contribute to your shared calendar.
🤩 Teamup's little extra: the ability to enhance your brand image through this planning tool. Use the customization options available to integrate your company logo and colors.
Teamup
Online diary: what's important?
An online diary, perfectly adapted to the needs of your business sector, contributes to your company's productivity. Because it optimizes work organization, encourages team collaboration and facilitates external communication, this tool proves decisive in terms of success.
As you can see, functionalities vary from one software package to another. To make the right choice, clearly define your objectives and identify the features that will help you achieve them.
Don't forget to consider the interface's ergonomics and ease of use to make sure you take full advantage of this valuable management tool's key services.
Article translated from French
Maëlys De Santis, Growth Managing Editor, started at Appvizer in 2017 as Copywriter & Content Manager. Her career at Appvizer is distinguished by her in-depth expertise in content strategy and content marketing, as well as SEO optimization. With a Master's degree in Intercultural Communication and Translation from ISIT, Maëlys also studied languages and English at the University of Surrey. She has shared her expertise in publications such as Le Point and Digital CMO. She contributes to the organization of the global SaaS event, B2B Rocks, where she took part in the opening keynote in 2023 and 2024.
An anecdote about Maëlys? She has a (not so) secret passion for fancy socks, Christmas, baking and her cat Gary. 🐈⬛