Best Open-Source File Sharing Tools 2026: 7 Options Compared

File sharing covers two jobs people often lump together. The first is sending something once to someone else: a large video, a signed form, a folder of photos. Tools like OnionShare, PairDrop and croc are made for this and leave nothing behind once the transfer ends. The second is keeping files available for a group over time, for which you want accounts, permissions and links, and that is the territory of Nextcloud, ownCloud and Seafile. Syncthing sits between the two by keeping folders identical across your own devices without any hosted storage. For one-off sends, the key question is whether the other person can install something. PairDrop and croc's browser option work from a web page, croc and OnionShare give you the strongest privacy story because files go directly between machines or through Tor, and all three are free. For a group, the question is who administers it. Self-hosting means someone owns patching, backups and uptime, and a file server open to the internet is a target, so keep it updated and use HTTPS. Licences below come from the projects' repositories as of the check date; hosted or enterprise editions are separate products and were not priced here.

Nextcloud

AGPL-3.0 server with share links, password protection and team folders. Free to self-host, but you maintain it, and the office and calendar extras add weight if you only need sharing.

Price: Free (Community server is free to self-host and the Nextcloud-branded desktop and mobile apps are free); paid from EUR 71.29 per user/year (Enterprise Standard at 100 users, 100-user minimum) (Nextcloud pricing, checked 2026-10-22).

Platforms and license: Web, Self-hosted, Desktop app, Mobile app. AGPL-3.0 (open source) (license source).

Project activity: 37.3k GitHub stars · latest release v33.0.10 (Oct 15, 2026) · last commit Oct 27, 2026

Best for: Groups sharing files over time.

Seafile

AGPL-3.0 server core built for file sync with library-based sharing. Community Edition is free and Professional is free for up to 3 users.

Price: Free (Community Edition is free and open source; Professional Edition is free for up to 3 users); paid from $48 per user/year (Professional, 10-249 users) (Seafile pricing, checked 2026-10-22).

Platforms and license: Self-hosted, Windows, macOS, Linux, iOS, Android. AGPL-3.0 (server core); GPL-2.0 desktop client (open source) (license source).

Project activity: 15.4k GitHub stars · latest release v9.0.5 (Feb 27, 2024) · last commit Oct 16, 2026

Best for: Large synced libraries.

ownCloud

AGPL-3.0 ownCloud Core with sharing and sync over WebDAV. Check the paid editions yourself, since their prices were not read.

Price: Free (ownCloud Core server code is open source under AGPL-3.0) (ownCloud pricing, checked 2026-10-24).

Platforms and license: Web, Self-hosted. AGPL-3.0 (open source) (license source).

Project activity: 8.8k GitHub stars · latest release v10.16.6 (Oct 6, 2026) · last commit Oct 27, 2026

Best for: Sharing with an existing ownCloud setup.

Syncthing

MPL-2.0 tool that syncs folders directly between your own devices. No links for outsiders, which keeps the attack surface small.

Price: Free (Free; syncs directly between your own devices with no central server or hosted storage) (Syncthing pricing, checked 2026-10-22).

Platforms and license: Windows, macOS, Linux, FreeBSD, Solaris, OpenBSD. MPL-2.0 (open source) (license source).

Project activity: 89.8k GitHub stars · latest release v2.1.7 (Oct 21, 2026) · last commit Oct 27, 2026

Best for: Your own devices only.

OnionShare

GPL-3.0 desktop app for sharing files, hosting websites and chatting anonymously over Tor. Slower than normal transfers, by design.

Price: Free (Free and open source) (OnionShare pricing, checked 2026-10-24).

Platforms and license: Desktop. GPL-3.0 (open source) (license source).

Project activity: 7.2k GitHub stars · latest release v2.7 (Oct 16, 2026) · last commit Oct 16, 2026

Best for: Sensitive one-off transfers.

Worth knowing: LICENSE.txt is the GNU GPL version 3. GitHub describes it as a way to share files, host websites and chat securely and anonymously.

PairDrop

GPL-3.0 browser tool for peer-to-peer sharing between devices on the same local network, with no sign-up. Needs both devices online together.

Price: Free (Free and open source; runs in the browser) (PairDrop pricing, checked 2026-10-24).

Platforms and license: Web browser. GPL-3.0 (open source) (license source).

Project activity: 11.7k GitHub stars · latest release v1.11.2 (Feb 24, 2025) · last commit Apr 22, 2026

Best for: Nearby phones and laptops.

Worth knowing: README: local file sharing in your web browser, peer-to-peer between devices on the same network. License taken from the repository metadata and LICENSE file; description from the project README. No paid plan was checked.

croc

MIT command-line tool that moves files between any two computers with a one-time code, peer-to-peer with a relay as fallback.

Price: Free (Free and open source command-line transfer tool) (croc pricing, checked 2026-10-24).

Platforms and license: Command line, Web browser. MIT (open source) (license source).

Project activity: 40.8k GitHub stars · latest release v11.5.5 (Oct 19, 2026) · last commit Oct 27, 2026

Best for: Developers and terminal users.

Worth knowing: README: transfers files and folders between any two computers, peer-to-peer with relay fallback. License taken from the repository metadata and LICENSE file; description from the project README. No paid plan was checked.

Which one to pick

• You need to hand a file to someone next to you right now: PairDrop
• The file is sensitive and the sender and receiver should stay anonymous: OnionShare
• A team needs permanent shared folders with accounts: Nextcloud
• You send files from a server or between two terminals: croc