Compare Proton Calendar vs. Readdle Calendars

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.

Proton Pass for Business is a privacy-first password and identity manager that helps organizations secure access at scale without sacrificing usability. Built with end-to-end encryption and a strict zero-knowledge architecture, it ensures that passwords, passkeys, secure notes, and payment details remain accessible only to authorized users within your team. Not even Proton can view your data. Teams can securely create, store, and share credentials via encrypted vaults, enabling safe and efficient collaboration. Granular admin controls allow IT managers to oversee permissions, enforce strong password policies, monitor access, and manage users throughout the employee lifecycle from onboarding to offboarding. Built-in password generation, autofill, and cross-device syncing streamline everyday workflows while maintaining high security standards. Proton Pass for Business also includes advanced features such as email alias integration to protect employee identities, dark web monitoring to detect compromised credentials, and detailed activity logs for visibility and compliance. Its open-source foundation promotes transparency and trust, and independent audits reinforce its security model. Hosted in Switzerland and protected by strong privacy laws, Proton Pass offers organizations a secure alternative to traditional password managers. With seamless browser extensions, an intuitive design, and enterprise-ready controls, it empowers teams to reduce credential-related risks, prevent unauthorized access, and improve productivity, all within a secure, encrypted environment.

Secure your organization from costly data breaches while meeting essential compliance requirements, such as ISO 27001, GDPR, and HIPAA. Our software-based VPN solution is easy to deploy alongside your existing systems, giving you a powerful and adaptable tool for securing your enterprise network. Our VPN Professional plan allows your team to connect securely to your local networks and cloud-based services. And with granular segmented control over who can connect to dedicated VPN servers and Gateways (logical groupings of dedicated servers), you can ensure your staff can access the resources they need (but only what they need). All of our business plans use robust industry-standard AES-256 or ChaCha20 encryption to ensure your data remains secure. You can further strengthen your organization's security with enforced two-factor authentication (2FA) and seamless login through single sign-on (SSO) with SCIM support for automated user provisioning. Our global high-performance (mainly 10 Gbps) server network is one of the largest in the world, and is part of the trusted Proton ecosystem — a suite of fully open source, end-to-end encrypted services built by the creators of Proton Mail and designed specifically to keep your business secure.

Proton Drive is the secure workspace for storing sensitive data and collaborating with confidence across teams, clients, and external partners. With full end-to-end encryption, you can share files, contracts, and business documents securely — and stay in control at all times. Set passwords, expiration dates, or revoke access instantly. Files are encrypted on your device before upload, and only you and your collaborators can access them. Even Proton can’t see your data. Each user gets 1 TB of storage, and you can scale as your organization grows. Proton Drive is developed in Switzerland by the makers of Proton Mail. We’re independent, built on privacy-first principles, and free from Big Tech surveillance, lock-in, or monetization of user data. We offer more than secure storage: - Real-time collaboration with Proton Docs - Granular sharing controls for external and internal access - File recovery for peace of mind - Cross-device access, including Windows, macOS, iOS, and Android We also help you meet compliance requirements out of the box. Proton Drive supports: - GDPR, HIPAA, DORA, NIS2, and ISO 27001 - Independently audited SOC 2 Type II compliance - No complex setup or third-party integrations required. By choosing Proton Drive, you show your clients, partners, and regulators that privacy and security are built into your workflows — not an afterthought.

Streamline event calendar management and online registration with Trumba. It's perfect for virtual, in-person or hybrid events. Trumba offers an innovative and highly customizable event calendar platform preferred by colleges and universities, hospitals and health systems, local government, communities and other organizations worldwide. Trumba also offers a HIPAA-compliant solution for hospitals and healthcare organizations and will enter into a BAA with covered entities. Trumba calendars can be easily embedded into your website or published as fully-hosted pages that match your online branding. Attendees can easily find events, subscribe to calendars, register/pay and stay informed of changes. Trumba can integrate with other calendars to provide a one-stop experience for your users and optimize workflows internally. Trumba customers love the ease of implementation services and ongoing customer support. Online demos and free trials are available upon request (no credit card info required).

NewOrg is a robust platform that allows non-profit organizations to integrate information from all areas of their operations. This allows them to better manage clients, volunteers, services, donors, donations and outcome. It also provides the ability to schedule activities, sign-ups, communications, surveys and fundraising activities. NewOrg is a powerful platform that can help you manage your committees, donors, events, and memberships to ensure that your organization runs smoothly.

Password security is the foundation of cybersecurity. Keeper's powerful password security platform will protect your business from cyberthreats and data breaches related to passwords. Research shows that 81% of data breaches can be attributed to weak passwords. Password security platforms are an affordable and easy way for companies to address the root cause of most data breaches. Your business can significantly reduce the risk of data breaches by implementing Keeper. Keeper creates strong passwords for all websites and apps, then secures them on all devices. Each employee receives a private vault to store and manage their passwords, credentials and files, as well as private client data. Employees will save time and frustration by not having to remember, reset, reuse, or remember passwords. Industry compliance is achieved through strict and customizable role-based access controls. This includes 2FA, usage auditing, and event reporting.

Google Workspace is an all-in-one cloud productivity platform developed by Google to help businesses manage communication, collaboration, document creation, and workflow automation from a centralized environment. The platform combines professional email, cloud storage, video conferencing, document editing, team messaging, scheduling, and AI-powered assistance into one subscription-based ecosystem optimized for modern work environments. Google Workspace includes applications such as Gmail, Google Drive, Google Meet, Docs, Sheets, Slides, Calendar, Chat, Keep, Forms, Sites, NotebookLM, and Gemini AI, enabling teams to work together seamlessly across devices and locations. One of the platform’s core strengths is its built-in AI functionality powered by Gemini, which helps users draft emails, summarize meetings, generate research insights, automate repetitive tasks, and improve productivity using contextual awareness from workplace data. Google Workspace also supports advanced collaboration features including real-time editing, appointment scheduling, eSignatures, document sharing, cloud storage management, and AI-assisted research tools. Businesses benefit from enterprise-grade security features such as AI-powered threat protection, data classification, endpoint management, Data Loss Prevention, secure access controls, and compliance support for enterprise environments. The platform offers scalable pricing plans suitable for startups, small businesses, enterprises, educational institutions, nonprofits, and government organizations. Google Workspace also simplifies data migration and onboarding with built-in migration tools and partner support for transferring emails, files, and business information securely into the cloud.

Passwork is a corporate password manager built for organizations that take security seriously, available as a self-hosted platform or a secure cloud service. Designed and headquartered in Barcelona, Spain, Passwork meets GDPR, NIS2, ENS, and other European regulatory standards by default. The self-hosted version keeps all credentials on your own server under the full control of your system administrators. The cloud option is hosted in secure German data centers. Both deployment models rely on client-side AES-256 encryption and zero-knowledge architecture, ensuring your data is never accessible to third parties. Passwork holds ISO/IEC 27001 certification. Enterprises rely on it for secure password sharing, privileged access management, and centralized credential governance.

Cloverleaf is an AI-powered coaching platform that turns assessment data, HRIS events, and calendar context into proactive, personalized coaching delivered in Slack, Microsoft Teams, Workday, and email. Cloverleaf is built on trusted behavioral assessments including DISC, CliftonStrengths, and Insights Discovery — with over 10 validated assessments available in one platform. On average, customers reduce assessment spend by 32% while gaining continuous AI-powered coaching from that data. Coaching is tailored to the individual and the specific people they're working with and the context of the moment. Before a difficult 1:1, a cross-functional standup, or a performance review, coaching arrives specific to that meeting, those people, and that interaction. Employees don't need to log into another system or think about what to ask. Cloverleaf anticipates what will be most helpful and delivers it in real time. Organizations align coaching to their own leadership frameworks and competency models, ensuring development reinforces their standards. HRIS integration triggers coaching automatically during promotions, manager changes, team transitions, and performance cycle milestones. First-time managers receive coaching on delegation, feedback, and team dynamics for their specific new team from day one. Talent and HR leaders get visibility into coaching engagement, capability reinforcement, and development trends by team, department, or organization. Development is measured by behaviors being practiced, not just courses completed. Cloverleaf is SOC 2 Type II compliant, GDPR-aligned, and ISO 27001 certified. Trusted by 45,000+ teams across organizations to strengthen manager effectiveness, engagement, and retention. 86% of users report improved team performance.