Best Calendar Software for Linux of 2025

Secure your company’s communications with Proton Mail — the business email solution trusted by over 50,000 organizations. With end-to-end encryption built in, your internal and external communications stay confidential by default. Proton Mail helps your business meet GDPR, HIPAA, and other compliance standards, while giving you full control over your data under strong Swiss privacy laws. Empower your team with encrypted email and calendar, support for your custom email domains, professional branding, and simple migration from providers like Google Workspace or Microsoft 365 — no IT team required.

Thunderbird is a no-cost email client that is simple to install and personalize, packed with an array of impressive features! It enhances your email experience by combining efficiency, security, and the most recent technologies. You can concentrate on the essential tasks without getting bogged down by unnecessary complexities. Various features, including integrated Do Not Track capabilities and blocking of remote content, collaborate to protect your privacy and security, allowing you to relax knowing your information is safe. With the help of Add-ons (Extensions & Themes), you can quickly transform Thunderbird's appearance and functionality to suit your preferences. Additionally, you can keep track of your schedule and significant events with a calendar that seamlessly integrates with your Thunderbird email, enabling you to manage multiple calendars, create daily to-do lists, invite friends to gatherings, and subscribe to public calendars. As an open-source initiative, Thunderbird invites anyone to participate by sharing ideas, designs, code, and volunteering time to assist other users in the community. This collaborative approach not only enhances the software but also fosters a sense of belonging among its users.

The Vivaldi browser enhances your online experience by safeguarding against trackers, blocking intrusive advertisements, and empowering you with distinctive built-in functionalities. Experience fast browsing with Vivaldi. Crafted with user preferences in focus, Vivaldi is a versatile web browser that boasts a plethora of features and customization capabilities, making it an invaluable tool for internet navigation. A standout aspect of Vivaldi is its innovative tab management system, which simplifies the organization and handling of numerous tabs. Furthermore, Vivaldi includes various built-in tools, such as a comprehensive notes and bookmarks manager, along with the option to capture and share screenshots effortlessly. Designed to prioritize speed and security, Vivaldi incorporates essential features like integrated ad-blocking and strong privacy measures. In conclusion, Vivaldi provides a distinctive and tailor-made browsing journey for users seeking greater autonomy and adaptability in their online activities, allowing them to personalize their digital experience further.

Tuta provides a privacy-focused email service that guarantees end-to-end encryption, securing all your data from unauthorized access. Featuring quantum-safe cryptography, Tuta protects your communications with the highest standards of security. Its intuitive apps for Android, iOS, and desktop ensure an easy and efficient experience for users, with no ads and complete privacy. Tuta also supports custom domains for professional use and remains committed to sustainability by using 100% renewable energy for its operations.

Vialect has been helping companies to connect people, content and capabilities for over a decade. Noodle is an All-in-One platform that provides office staff & remote teams the ability to post ideas, create content, share schedules & have video calls all within a single secure site. On Premise and Cloud hosting available.

Manage your business projects efficiently with Jira Work Management, previously known as Jira Core, which provides a comprehensive view of all project details. This software aids in organizing your team and projects effectively, starting with a defined workflow that allows for seamless task tracking. The Cloud version of Jira Work Management offers boards that visually represent workflows, enabling you to easily move tasks from pending to completed status. Task management is simplified with all essential elements like statuses, comments, and attachments conveniently located in one interface. This ensures that everyone stays informed about the project's specifics without the need for constant emails or meetings. Additionally, real-time notifications alert you when your input is required, making it easy to monitor task progress and workload distribution among team members. With Jira Work Management, you can keep tabs on your team's projects through various methods, including concise overviews and personalized dashboards, enhancing overall productivity and collaboration. Furthermore, the ability to customize views allows teams to adapt the software to their unique workflow needs.

Structure your day by arranging your tasks based on their importance and utilizing a straightforward drag-and-drop feature for time blocking. Say goodbye to the chaos of multiple tabs. For a quick view of your calendar, simply press Option+C to access it, and press the same buttons to return. Additionally, while in Quick Peek mode, you can toggle between daily and weekly views using W and D. Time, being our only irreplaceable resource, must be optimized and protected. That’s why Morgen defaults to creating time blockers for events, making it easier than ever to allocate time for what truly matters. You’ll receive system notifications for your upcoming meetings, eliminating the hassle of searching for links. Joining a video call is just a click away, and Morgen offers numerous shortcuts to streamline your most frequently performed tasks. Moreover, integrating all your meeting rooms into Morgen allows you to add them to any meeting effortlessly with a single click, enhancing your productivity even further. With these tools, managing your schedule has never been simpler.

Rise is designed to help you effectively plan, enhance, and safeguard your daily routine, allowing you to dedicate more time to what truly matters. This elegant calendar employs a multitude of signals to determine optimal meeting times, resolve scheduling conflicts, and ensure you have dedicated focus periods. You can turn your key events into adaptable meetings, and Rise will manage the details for you. It seamlessly integrates your personal commitments, such as a dentist appointment, into your work calendar while maintaining your privacy. By accepting Rise's tailored suggestions, you can reclaim precious time that benefits everyone involved. Additionally, you can easily connect with your favorite colleagues for quick scheduling and to stay updated on their availability. This streamlined approach to managing your time not only enhances productivity but also fosters better collaboration within your team.

Introducing Brite: Your Comprehensive Planner App for Tasks, Calendar, Habits, and More to Enhance Your Productivity Effortlessly. Brite integrates all the necessary tools into a single application, allowing you to plan, track, and organize without hassle. Replace the chaos of multiple apps with Brite's streamlined and organized interface! Gain a complete view of your week, consolidating tasks, projects, events, and documents all in one location. Eliminate the need for various calendar apps and enjoy a more fluid and stress-free planning experience. Effortlessly create to-do lists, manage tagging, and set priorities with Brite's user-friendly features. Stay focused with smart alerts that help you meet your deadlines. Whether for personal ambitions or professional projects, Brite is designed to support your goals effectively. Take advantage of our kanban board, collaborative features, and real-time goal tracking to optimize your workflow. Create notes and documents easily with Brite's intuitive editing tools, and share your thoughts on iPad using slash commands alongside collaboration features. Additionally, manage your schedules with Brite's versatile calendar, offering daily to monthly views, customizable reminders, and the ability to sync with Google, Outlook, and Apple for a truly seamless planning experience. With Brite, you can transform how you manage your time and tasks for heightened efficiency and clarity.

Tuta Calendar offers a zero-knowledge approach to scheduling, utilizing quantum-safe encryption to keep your events shielded from unauthorized access. Every action you take within Tuta Calendar, from planning events to accepting invitations and sharing your calendar, is automatically encrypted from start to finish, ensuring that your information remains exclusively yours. The user-friendly interface facilitates seamless organization of appointments, professional meetings, and recurring tasks, making it simple to manage your time effectively. Additionally, secure push notifications guarantee that your activities remain private from any outside observers. For added security, you can activate two-factor authentication to safeguard your login details against potential threats. Tuta Calendar also provides free and open-source desktop applications, enabling easy sharing of calendars and events with family, colleagues, or organizations with just a few simple taps. Overall, Tuta Calendar combines security and usability, making it a standout choice for anyone looking to protect their scheduling needs.

Routine serves as a comprehensive work operating system designed to assist individuals and teams in organizing and managing their tasks with maximum efficiency. It brings together various elements of work—such as tasks, meetings, tickets, and clients—into a graph-based unified workspace, which consolidates data from third-party services like GitHub, Salesforce, HubSpot, and Slack, thus offering a seamless way to cross-reference information. This integration of existing tools allows Routine to enhance and connect fragmented data, enabling users to monitor projects, collaborate effectively, and make informed decisions without the need to toggle between multiple applications. Additionally, its approach prioritizes data-driven strategies and a local-first model, ensuring that users can access and utilize information efficiently, even in the absence of cloud connectivity. With Routine, the workflow becomes more streamlined, fostering productivity while reducing the chaos typically associated with juggling numerous tools.

Dayshape delivers leading resource management software designed to help organizations achieve extraordinary results. Trusted by Big Four and many other top professional services firms globally, Dayshape is the only solution that combines advanced AI, real-time project financials, and firm-wide insights enabling customers to elevate resource management into a strategic function. With far-reaching connectivity, Dayshape fits into existing ecosystems and stands out as the only resource management vendor with a Workday packaged solution—built to handle complexity and grow with your firm. By driving profitable growth, powering confident decisions, and ensuring satisfied clients and teams—we're helping our customers build strong organizations and careers for the long term.

Introducing Calendar 365 for Dynamics CRM - Your Premier Solution for Effective Time Management! Achieve a state of organization, efficiency, and control over your schedule with Calendar 365 for Dynamics CRM. This innovative calendar extension is crafted to integrate effortlessly with Microsoft Dynamics CRM, transforming how you manage your tasks, appointments, and time. Whether you work in sales, customer support, or project management, Calendar 365 is an essential asset for enhancing productivity and ensuring you keep track of your daily responsibilities. Explore the features designed to elevate your team's efficiency: - Effortless Integration - User-Friendly Interface - Personalized Views - Color-Coded Scheduling - Intelligent Reminders - Collaborative Team Features - Accessibility on Mobile Devices - Support for Multiple Time Zones - Comprehensive Analytics and Reporting - Robust Security and Privacy Measures With Calendar 365, you are not just managing time; you are mastering it.

Calindori is a user-friendly calendar app optimized for touch interactions. While primarily intended for mobile devices, it also functions seamlessly on desktop platforms. The application allows users to view both past and upcoming dates while managing their tasks and events efficiently. Upon the initial launch, it generates a new calendar file adhering to the iCal format. Furthermore, users have the option to create multiple calendars or import pre-existing ones to enhance their scheduling experience. This versatility makes Calindori a suitable choice for anyone seeking an organized way to track their time.