Nextcloud Alternatives (September 2025)

ownCloud, your file platform. The most essential business tool for enterprise-grade file sync and share.

Groupware tool for online collaboration and organisation. EGroupware integrates cutting edge collaboration technologies - available in a german hosting environment or on-premises.

FileCloud is an enterprise file sharing, sync and backup solution that offers private, public and hybrid cloud content services.

Explore Rocket.Chat, where we put data privacy into every conversation and enable teams to collaborate seamlessly.

Secure file storage and collaboration that helps you stay safe, secure and connected in the cloud.

With vBoxxCloud you can easily sync, share and edit your files from anywhere. Our secure cloud storage is encrypted and GDPR ready! Start a free trial!

Create collaborative online workspace in the secure cloud or host it yourself. Work remotely using features of an online workspace. Manage projects and emails, collaborate on docs, chat in ONLYOFFICE Workspace.

Build your own collaborative and social networks to faciliate communication and teamwork.

LucidLink empowers fast and secure collaboration for creative teams working with any file size, across any distance.

Zoho WorkDrive is a content collaboration platform designed for teams to store, share, manage, and work together on files of any size

Egnyte's AI-powered platform unlocks organizations cloud content's full potential. 22,000+ businesses trust Egnyte to manage, secure, and govern their content.

Dekko is trusted by organisations of all sizes across the globe for ultra-secure file sharing, collaboration, eSignatures & video conferencing. Learn more.

Zimbra: A Cloud-Hosted Collaboration Software and Email Platform That Integrates With Proprietary Business Solutions

Secure hosted email with custom domain. Shared calendars, chat, storage, documents & apps. The only solution integrated and working together in one screen.

Zoho Workplace is a productivity and collaboration suite trusted by millions. It brings mail, chat, files, office suite, meetings, and more into one place.

Mattermost is a secure collaboration platform for accelerating mission critical work in complex environments.

Box empowers your teams by making it easy to work with people inside and outside your organization, protect your valuable content, and connect all your apps.

Box empowers your teams by making it easy to work with people inside and outside your organization, protect your valuable content, and connect all your apps.

Put your trust in the VDR solution used by small businesses and enterprises alike to manage your most complex, confidential deals.

Share files and collaborate easily with OneDrive cloud storage for business. Work in the same document at the same time in real-time with Microsoft OneDrive.

Office Chat is a Fast, Simple and Secure Messaging App For Smartphones and PC. Mobile teams and businesses use Office Chat to share rich messages, documents, pictures, videos and location with their colleagues.

pCloud is the most secure encrypted cloud storage, where you can store your personal files or backup your PC or share your business documents with your team!

Chat, video, signature, document management made easy and secure. The all-in one professional platform for client interactions and collaboration.

Onehub helps businesses securely share and control files in the cloud. Share files, data, and information with confidence in our cloud storage system today.

Home of the XWiki and CryptPad Open Source projects. Looking to organize your information better? XWiki SAS's team of professionals is the best solution for you and your team. Ready-to-use or Customized. On-Premise or hosted in Cloud.

Boost productivity and streamline communication with GroupWise, our enterprise collaboration software perfect for remote and virtual teams

HCL Notes is the email client software that supports social collaboration. Integrates enterprise applications in a single workspace with agile security from the core.

Infinite Connect offers powerful unified cloud communications as a service, team collaboration tools, and VoIP phone service for business.

Sanity is the modern CMS that transforms content into a competitive advantage. Customize, collaborate, and scale your digital experiences seamlessly.

Digital Guardian Secure Collaboration (formerly Vera) enables zero-trust security for sensitive data, enabling organizations to protect any file, anywhere.

Huddle helps teams collaborate better remotely. Take your office communication tools with you wherever you go with Huddle.Team.

4,000+ companies trust Files.com to automate and secure business critical transfers. We obsess about security, compliance, reliability, and performance so your critical business processes just work every time. Supports FTP, SFTP, AS2, and dozens of integrations.

A secure cloud management platform for automation, orchestration, cost and usage monitoring of public and private clouds, hypervisors and container hosts. Provides multi-cloud RBAC. Enables self service provisioning. Cost analytics and cloud spending optimization

The Easiest Way to Collaborate with People Inside or Outside of Your Company. Secure online workspaces that are user-friendly and quick to implement.

Secure Windows or Linux mail server that includes chat, calendaring and contacts and offers a cost-effective alternative to Microsoft Exchange.

Flock, the best team communication app and online collaboration platform, comes with team messaging, project management and other great features that improve productivity and boost speed of execution.

Atlassian's team collaboration software like Jira, Confluence and Trello help teams organize, discuss, and complete shared work.

Atlassian's team collaboration software like Jira, Confluence and Trello help teams organize, discuss, and complete shared work.

Dropbox helps you simplify your workflow. So you can spend more time in your flow.

Dropbox helps you simplify your workflow. So you can spend more time in your flow.

Emails, calendars, contacts, tasks, chat and more

CiraSync - Sync Office 365 Global Address List and Public Folder contacts to mobile users in under a minute. Also Sync shared Calendars. Try now for free!

OpenStack is an open source cloud computing infrastructure software project and is one of the three most active open source projects in the world.

Secure Backup for Microsoft 365 trusted by 15k+ customers. Never face Microsoft 365 data loss again with unlimited AWS backup & smart recovery.

OX Cloud Email - Easy, Fast, Secure - Powerful email built for business

Bublup Project management and organization app. Create to-do lists, manage projects, tasks + more. Discover an easy way to save, organize, and share.

Meet Couchdrop. The SFTP Server and File Transfer platform built for the cloud. Secure, scalable and easy to configure. Connects with your own storage, Azure Blob, SharePoint, Google Drive and more. Get started for free.

TrueNAS is the World's #1 Open Source Storage. Based on OpenZFS, it is trusted by millions and deployed worldwide.

Simple and secure file sharing with Hightail. Send large files, preview visual assets, collect precise feedback and keep creative projects moving in one easy and secure cloud-based software. Try Hightail for free.

OpenBOM™ ☝ Integrated Cloud PDM, PLM, bill of material and inventory management system for engineering teams, manufacturing companies. ✔️ Helps users to manage CAD files, BOM, purchases and collaborate in real time across global networks of engineers, contractors and suppliers.

Save time & resources by adding collaboration and productivity features like chat, messenger, files, feeds, AI, & cloud with easy pre-built components for your b2b web app

Secure Cloud FTP platform -- create a hosted FTP server in seconds for manual and automated transfers, full web interface, direct FTP, FTPS and SFTP support.

Sametime is a cloud-based video conferencing solution that provides secure audio and video call platforms powered by efficient software and tools for virtual communication and office meetings.

Drupal is an open source platform for building amazing digital experiences. It's made by a dedicated community. Anyone can use it, and it will always be free.

TrustCloud’s Programmatic and Predictive AI is the fastest way to accurately pass compliance audits, automate risk assessments, and complete security questionnaires

Try the best virtual office platform used globally. See how the best remote teams communicate better, collaborate faster, and work daily in a virtual HQ.

FuseBase (formerly Nimbus Platform) - Free Online Collaboration Software for Remote Teams. Build your wikis, client portals and more with the FuseBase (formerly Nimbus Platform) collaboration tool ? A perfect space for online work

Box Zones enables you to address data residency requirements across multiple geographies, which raises the bar for privacy and control in the cloud.

Business communication and team messaging software. Unlimited users, direct and group messages, and unlimited message history.

End-to-end encrypted communication and collaboration with tasks, documents and projects for business teams.

OneCal syncs Outlook, iCloud and Google Calendars calendars in real-time, helps avoid scheduling conflicts, saves time, and keeps your personal life private.

Your new productivity Hub

Create, manage, and distribute content at scale with the world's most interconnected digital asset management platform.

Telzio provides cloud-based phone systems with a modern interface and scalable pricing. Complete end-to-end solution with powerful call routing features.

PBX, Video Conferencing, Live Chat & more with ❱ 3CX ® all included with no hidden costs or add-ons. Free for unlimited users ☛ Try it today!

Mediasite is the most automated and scalable video platform, trusted by higher education, healthcare, and enterprise organizations.

A modern, simple, and blazingly fast way to collaborate – bring knowledge, docs, and projects together in one place.

An open source Kubernetes Platform to manage enterprise-grade Kubernetes across hybrid cloud, multi-cloud and edge. Get started for free!

AIONCLOUD is MONITORAPP’s Cloud-Based Platform brand, offering various security services at a level equivalent to traditional security solutions, but in…

Use Teamup calendar to organize teams and business, consolidate schedules and activities, simplify communication with security and privacy.

Work on all kinds of Office documents, create and fill out forms anywhere anytime.

CalendarBridge syncs calendars together in real-time and provides scheduling pages built for people with multiple calendars

Open Drive unlimited cloud storage - Store, sync, backup documents, sharing and collaboration with instant access all in a simple to use, secure environment

Baserow allows you to create databases and applications without code. Streamline your data management, collaborate in real-time, and scale with maximum flexibility. Self-host for unlimited rows and storage. Try for free today!

A full unified communications suite of audio, video, applications, collaboration, and more. On-premises or cloud-based, you make the call.

PHP cloud server control panel that support Digital Ocean, Linode, AWS, Vultr, Azure and other custom VPS. Git deployment webhook and easiest control panel to manage Laravel, Cake, Symphony or WordPress.

Xtensio is a business communications platform where teams create powerful business content together and share beautiful living documents.

JumpCloud makes it simple to manage Windows, Apple, Linux, and Android devices and to deliver secure access with SSO, MFA, Zero Trust, RADIUS, and more.

Thinkfree Office is a private, secure online office suite. Discover an office with flexible deployment options and MS Office compatibility.

Sync your Outlook contacts, calendar, tasks and notes on your PC direct with your phone via Wi-Fi or a cellular network.

Altium 365 is the first open electronics hardware development platform for secure, seamless, and streamlined collaboration.

Fastest time-to-market and rapid digitization with the Open Source data and experience management platform for PIM/MDM, DAM, DXP/CMS, CDP, and digital commerce.

Solve hybrid work with smarter video conferencing. Webex Meetings provides cost-effective enterprise solutions for virtual meetings and collaboration.

Tuta guarantees your data stays private for free & without ads. Quantum-resistant encryption makes Tuta the best secure technology solution to protect your privacy.

Easily organize and discover your content. Share securely with customers, get real time insights and automate processes

We're a cloud-based HIPAA-Compliant videoconferencing platform that provides a secure & reliable tool for high-quality Telehealth sessions. Learn more here.

Secure online collaboration tool and GDPR compliant online whiteboard with over 14M+ users around the world. Experience the power of visual collaboration!

The Beeble Project is email and online cloud storage platform with unprecedented security and privacy without third party access.

Frame.io is the world's leading video review and collaboration platform. Share media, collect feedback, manage reviews, and deliver finished work faster — from anywhere in the world.

Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.

Acquia provides the leading cloud platform for building, delivering, and optimizing digital experiences.

Aiven simplifies cloud data infrastructure management by deploying open-source technologies across multiple clouds, enabling fast and confident creation of next-generation applications.

Aiven simplifies cloud data infrastructure management by deploying open-source technologies across multiple clouds, enabling fast and confident creation of next-generation applications.

Access, store and share files in the cloud or behind your firewall. Designed for users, engineered for IT. Proven to scale to 40,000+ users. Tailored to your stack.

Our email encryption software allows you to work without worrying about your data security. Choose Sealit and make sure your business is protected.

Novu empowers developers and product teams to collaborate seamlessly on notification management. Its unified platform provides centralized content, type-safe schemas, and reusable components, facilitating efficient workflows. With code-first and no-code tools, teams can easily customize and deploy notifications across multiple channels like email, SMS, push, chat, and in-app. Novu enhances communication, reduces friction, and ensures reliable, scalable, and personalized user experiences while maintaining full visibility and control over notifications.

Discover the benefits of a powerful online PDF editor. Create, fill out, share, and collaborate on documents from any device.

Free office suite – the evolution of OpenOffice. Compatible with Microsoft .doc, .docx, .xls, .xlsx, .ppt, .pptx. Updated regularly, community powered.

Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets