Open Source iCloud AlternativesTop Cloud Storage Services & Online Backup Tools like iCloud

The best open source alternative to iCloud is Nextcloud. If that doesn't suit you, our users have ranked more than 50 alternatives to iCloud and 14 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to iCloud are ownCloud, Seafile, Proton Drive and Cozy.

iCloud alternatives are mainly Cloud Storage Services but may also be File Sync Tools or Online Backup Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of iCloud.

iCloud alternatives page was last updated

iCloud

103

Freemium • Proprietary
Cloud Storage Service

Store email, contacts, calendars, photos, music, books, apps and more in the cloud and access them on all your devices....

More about iCloud

Nextcloud
Is this is a good alternative?
Yes
No
Free • Open Source
Cloud Storage Service
File Sync Tool
Online Backup Tool
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
iPad
Self-Hosted
F-Droid
Cloudron
136 Nextcloud alternatives
You should have full control over your data. We help you achieve that: a safe home for all your data. Secure, under your control and developed in an open, transparent and trustworthy way. We are Nextcloud.
- - Nextcloud is the most popular Android Tablet & Self-Hosted alternative to iCloud.
- - Nextcloud is the most popular Open Source alternative to iCloud.
Suggest and vote on features
Nextcloud Features
1. Privacy focusedNextcloud is considered a privacy friendly alternative.
2. Calendar IntegrationNextcloud lets you sync your tasks and events with your calendar application.
3. Ad-freeNextcloud doesn't contain any form of external advertising.
4. Two-factor AuthenticationNextcloud supports two-factor authentication (2FA).
5. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
6. End-to-End EncryptionNextcloud has E2E Encryption, for entire or parts of the app.
7. Extensible by Plugins/ExtensionsNextcloud can be extended with add-ons, plugins and extensions.
8. Dark ModeNextcloud supports dark mode for comfortable usage in low light conditions.
9. FIDO U2F (2FA) supportNextcloud supports FIDO U2F / passwordless / multi-factor authentication.
Sync Contacts
Security focused
On-premises software
Customizable
Hostable
Cross-Platform
CalDAV Support
Integrated File Sharing
Calendar Sync
Integrated Email Client
Opinions about Nextcloud as a Alternative to iCloud
Almost everyone thinks Nextcloud is a great iCloud alternative.
ownCloud
Is this is a good alternative?
Yes
No
Freemium • Open Source
Cloud Storage Service
File Sync Tool
Online Backup Tool
Mac
Windows
Linux
Android
iPhone
Blackberry
Android Tablet
iPad
Self-Hosted
Software as a Service (SaaS)
Raspberry Pi
Cloudron
223 ownCloud alternatives
Store your private pictures, documents, calendar and contacts on your ownCloud server at home, a rented VPS or use one of the public ownCloud providers. Access your existing data on an FTP drive at work, images shared with you on Dropbox, or your NAS at home--all through your...
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ownCloud Features
1. Calendar IntegrationownCloud lets you sync your tasks and events with your calendar application.
Self-hosted search
Autotagging
No installation required
Built-in Note Taker
SAML Single Sign-On
Virtual filesystem
WebDAV Support
Image Preview
Built-in RSS reader
Delta Update
Seafile
Is this is a good alternative?
Yes
No
Freemium • Open Source
Cloud Storage Service
File Sync Tool
Online Backup Tool
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
iPad
Self-Hosted
124 Seafile alternatives
Seafile is a professional open source cloud storage platform for organizations. It has complete file syncing and sharing features, reliable file storage and advanced privacy protection feature.
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Seafile Features
1. File VersioningSeafile has a version system that lets you view and go back to older versions of the project/file/document.
Multi Platform
Isolated file libraries
Support for Amazon S3
Virtual hard drive
Install Syslinux
Sync Network Drive
Development API
Encrypted sync
Proton Drive
Is this is a good alternative?
Yes
No
Freemium • Open Source
Cloud Storage Service
Online Backup Tool
File Sync Tool
Online
Android
iPhone
Android Tablet
iPad
Tor
Windows
34 Proton Drive alternatives
Proton Drive is an end-to-end encrypted Swiss vault for your files, ensuring that nobody except those authorized by you can access your data.
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Proton Drive Features
1. End-to-End EncryptionProton Drive has E2E Encryption, for entire or parts of the app.
2. Dark ModeProton Drive supports dark mode for comfortable usage in low light conditions.
3. Privacy focusedProton Drive is considered a privacy friendly alternative.
4. No TrackingProton Drive will not track you or use your personal data.
5. Two-factor AuthenticationProton Drive supports two-factor authentication (2FA).
6. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
7. Ad-freeProton Drive doesn't contain any form of external advertising.
8. Encrypted BackupProton Drive uses encryption algorithms to keep your files safe as well as prevent unauthorized access.
File Hosting
Cozy
Is this is a good alternative?
Yes
No
Freemium • Open Source
Cloud Storage Service
Photo Sharing App
Mac
Windows
Linux
Android
iPhone
Self-Hosted
CouchDB
Go (Programming Language)
90 Cozy alternatives
Choose simplicity, get Cozy. We all have a life and a digital life. Cozy gathers them. In your Cozy, you have all your personal data: pictures, health, bank, holidays, accessible only by you. Welcome to your new digital home.
Suggest and vote on features
Cozy Features
1. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
2. End-to-End EncryptionCozy has E2E Encryption, for entire or parts of the app.
3. Privacy focusedCozy is considered a privacy friendly alternative.
4. Shared FoldersCozy supports shared folders that can be used to store, search, and access files with multiple people.
5. Selective SynchronizationCozy allows you to pick which files are synced between the server and your devices.
File Storage
Android Sync
Information gathering
Accounting Integration
Personal Information Manager (PIM)
Mailbox.org
Is this is a good alternative?
Yes
No
Paid • Open Source
WebMail Provider
Email Client
Calendar App
Online
71 Mailbox.org alternatives
Mailbox.org offers a secure e-mail account for home and business use. The domain name, me@mailbox.org, is easy to remember and can be understood anywhere in the world. They have been operating e-mail accounts for more than 20 years and are a highly reliable service provider.
Suggest and vote on features
Mailbox.org Features
1. Privacy focusedMailbox.org is considered a privacy friendly alternative.
2. PGP EncryptionMailbox.org supports PGP, an encryption system used for sending encrypted emails and files.
3. No TrackingMailbox.org will not track you or use your personal data.
4. Calendar IntegrationMailbox.org lets you sync your tasks and events with your calendar application.
5. Real time collaborationMultiple users can work together in Mailbox.org simultaneously.
6. Support for AliasesMailbox.org supports aliases, so you can receive email without exposing your main email address
7. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
8. Self Destructing MessagesMailbox.org supports the use of private messages that will be auto deleted according to a specified time or action.
9. Spam FilterMailbox.org can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
Custom Domain
Encrypted Email
Built-in Calendar
IMAP Support
File Storage
Contacts
CalDAV Support
CardDAV Support
Support for SFTP
Two-factor Authentication
Filestash
Is this is a good alternative?
Yes
No
Freemium • Open Source
Cloud Storage Service
File Sync Tool
File Manager
Online
Self-Hosted
Software as a Service (SaaS)
241 Filestash alternatives
A Dropbox-like file manager that let you manage your data anywhere it is located: FTP, SFTP, WebDAV, Git, S3, Minio, Dropbox, Google Drive.
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Filestash Features
1. LightweightFilestash consumes less device resources compared to similar apps.
2. Git SupportFilestash supports Git, a free and open source distributed version control system.
WebDAV Support
Document sharing
Web file manager
Support for SFTP
S3 integration
Support for FTP
Secure File Sharing
Org-mode
Integrated FTP client
Image Sharing
EteSync
Is this is a good alternative?
Yes
No
Freemium • Open Source
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
BSD
iPad
Self-Hosted
F-Droid
Software as a Service (SaaS)
Etebase
33 EteSync alternatives
Secure, end-to-end encrypted, and privacy respecting sync for your contacts, calendars and tasks. Everything is encrypted on the client-side and all the code (client and server) is open source.
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EteSync Features
1. End-to-End EncryptionEteSync has E2E Encryption, for entire or parts of the app.
2. Encrypted BackupEteSync uses encryption algorithms to keep your files safe as well as prevent unauthorized access.
Android Sync
Sync Contacts
Client side encryption
Calendar Sync
Activity history
Contacts
Bitwarden Send
Is this is a good alternative?
Yes
No
Freemium • Open Source
Mac
Windows
Linux
Android
iPhone
Android Tablet
iPad
Microsoft Edge
Google Chrome
Safari
Opera
Brave
Firefox
76 Bitwarden Send alternatives
Bitwarden Send is a lightweight utility used to share information with another person for a limited period of time. Bitwarden users can easily transmit a file or text, and rest easy knowing the sent information is protected with end-to-end encryption, and will not live forever.
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Bitwarden Send Features
1. End-to-End EncryptionBitwarden Send has E2E Encryption, for entire or parts of the app.
Internxt Drive
Is this is a good alternative?
Yes
No
Freemium • Open Source
Cloud Storage Service
Cloud Hosting Service
Mac
Windows
Linux
Online
Android
iPhone
iPad
150 Internxt Drive alternatives
Internxt Drive is an open-source, zero-knowledge, encrypted cloud storage service based on absolute privacy and security. Internxt cloud uses blockchain technology so people’s data and files are fully encrypted and secure.
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Internxt Drive Features
1. Privacy focusedInternxt Drive is considered a privacy friendly alternative.
2. End-to-End EncryptionInternxt Drive has E2E Encryption, for entire or parts of the app.
3. DecentralizedInternxt Drive is based on a decentralized infrastructure with no single entity controlling it.
Security focused
Based on Blockchain
Decentralized storage
Blockchain
Anonymous Secure Filesharing
LinShare
Is this is a good alternative?
Yes
No
Free • Open Source
Online
41 LinShare alternatives
Specially designed to secure paperless trading companies that put privacy and traceability in the heart of their problems of exchange, Linshare provides a simple solution completely intuitive.
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LinShare Features
File Hosting
CmisSync
Is this is a good alternative?
Yes
No
Free • Open Source
File Sync Tool
Mac
Windows
Linux
151 CmisSync alternatives
Syncs files to/from any local enterprise file server. Not cloud-based: CmisSync works on Enterprise Content Management (ECM) systems on local area networks (LAN) without Internet.
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CmisSync Features
Folder Sync
Location-based
On-premises software
Synchronization