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Best open-source alternatives to Dropbox

A cloud file sync and sharing service.

Dropbox pioneered consumer file sync and remains widely used for cross-device file access, link sharing, and collaboration on shared folders. Its native clients across desktop and mobile drove broad adoption. Storage costs at scale, data sovereignty requirements, and discomfort with files living on third-party servers motivate the move to self-hosted file sync platforms.

1 alternatives listed
  1. 1app logo
    app
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    GNU Affero General Public License v3.0Open Core

    TinyCld is a self-hosted workspace platform designed as an app shell around a set of installable feature packages. It combines an Expo Router front end with a PocketBase back end, and the repository described here provides the runnable shell, deployment configuration, package generation, and runtime wiring needed to assemble a workspace from sibling packages. It is aimed at users who want a self-hosted alternative to a cloud workspace suite and at developers who want to extend that suite with modular packages. The README explains how to clone the workspace members, install from the workspace root, run the development proxy and backend processes, and build or deploy the bundled container image. Features called out include mail, calendar, contacts, drive, text, calc, and Google Takeout import, with additional packages able to be added by workspace linking.

    Open CoreMulti-UserDocker
    Install:dockersource

    Features:

    • modular plug-in packages
    • mail
    • calendar
    • contacts
    • drive

    +5 more

    Source CodeDocs
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What to look for in a Dropbox alternative

Sync engine quality is the core differentiator — evaluate handling of large files, partial sync, conflict resolution, and selective sync on space-constrained devices. End-to-end encryption and granular sharing permissions (password-protected links, expiring shares) matter for regulated industries. Mobile app polish and reliable background sync are often the gap between a usable Dropbox replacement and a frustrating one.

Other SaaS alternatives