PrivMX is an end-to-end encrypted collaboration platform for teams that need private messaging, file sharing, calendars, and project workspaces. It combines zero-knowledge security with self-hosting options and an open-source core.
💡 Pick it when you need a mature, extensible self-hosted suite with deeper integrations and file-management features.
Nextcloud is a self-hosted file sync and share server designed to be easy to use and secure.
Free and paid plans available
Proton AG
💡 Pick it when private cloud storage and simple sharing matter more than integrated project and team-workspace tools.
Proton Drive is an end-to-end encrypted cloud-storage service for individuals and teams. It provides encrypted file storage, sharing links, and document editing...
Freemium, paid from $4.99/mo
💡 Pick it when secure business file sharing, compliance controls, and polished clients are your top priorities.
Tresorit is a secure cloud storage solution that encrypts your files and provides end-to-end encryption for maximum data security.
Starting from $10.42/month
💡 Pick it for private, browser-based document collaboration and an open-source alternative with a strong free option.
CryptPad is a privacy-focused online collaboration platform that allows users to work on documents, spreadsheets, presentations, and more while ensuring end-to-end encryption.
Freemium model with paid plans available
Element
💡 Pick it when encrypted team messaging, calls, and decentralized communication matter more than integrated file workflows.
Element is a secure, open-source collaboration client built on the decentralized Matrix network. It is used by teams and public-sector organizations for...
Free; paid hosting available
💡 Pick it when self-hosted team chat, integrations, and technical workflows are more important than end-to-end encrypted storage.
Mattermost is an open-source, self-hosted Slack alternative. It provides team collaboration and messaging tools for modern enterprises.
Free for the basic version, paid plans for enterprise features
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