The Best Open Source Dropbox AlternativesTop Cloud Storage Services & File Sync Tools like Dropbox

Nextcloud is an open source software that allows you to manage your files and sync them across all your devices - like Dropbox. There are, however, several differences: You can self-host a Nextcloud instance, allowing you to fully manage it, or you can use a Nextcloud provider to host your data for you. You have access to more security, privacy and administration options. You can add plugins for almost everything (emails, tasks, calendars, maps, news, video chats, notes, and more).

Of course, it’s a bit more complicated to set up since you have to self-host it or find a provider, but if what you’re looking for is an open source and extensible solution that you can fully manage yourself, Nextcloud might be the right pick for you.

Like Nextcloud, ownCloud is an open source solution that you can self-host on your own server, or you can pay a monthly fee to get an online instance with limited storage. It offers interesting features such as collaborative editing and version management of documents, image galleries, end-to-end encryption, email plugins to host attachments, and more… and you can also extend it by installing add-ons from their marketplace.

It’s no coincidence that ownCloud and Nextcloud share so many features, because Nextcloud is based on ownCloud. The key differences are the licenses (ownCloud’s enterprise edition comes under commercial license), the exclusive features ownCloud offers only to premium users while all features are free with Nextcloud, the app marketplaces (Nextcloud’s one has more apps), and of course, the pricing plans if you want a managed instance.

Syncthing, an open-source alternative to Dropbox, uses peer-to-peer tech to keep your files private and decentralized. Unlike Dropbox's cloud sync and hosting, Syncthing offers self-hosted functionality with unlimited space, suiting those prioritizing data control and privacy.

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.

Offering comprehensive privacy with end-to-end encryption, Proton Drive allows users to store, synchronize, and share files across various devices through web, desktop, and mobile apps. Free storage up to 5 GB, service remains open-source and audited, ensuring file content and access control.

Filen is a cutting-edge cloud storage provider that offers client-side, end-to-end, zero-knowledge encryption. Headquartered and operated entirely in Germany, Filen is at the forefront of combining comprehensive features with uncompromising privacy and security.

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