SpiderOak Alternatives for Linux

ownCloud is a free and opensource file sync and share app which is self hosted.

MEGA is the cloud-based file hosting solution.

CrashPlan backup software offers the best way to back up and store personal, business & enterprise data securely - offsite, onsite & online in the Cloud.

MediaFire is a file hosting, file synchronization, and cloud storage service.

Duplicati is a backup tool, not a file sync tool.

Tonido is remote access and home server software for network-attached storage.

TeamDrive is a software manufacturer that has specialized in creating solutions for secure collaborative work over the Internet.

Yandex.Disk is a cloud service created by Yandex that lets users store files on “cloud” servers and share them with others online. The service is based on syncing data between different devices. Yandex.Disk was launched in English in June 2012.

Seafile is a file-hosting software system. Files are stored on a central server and can be synchronized with personal computers and mobile devices through apps. Files on the Seafile server can also be accessed directly via the servers web interface.

FileCloud is a file sharing, backup, and remote management solution.

Koofr offers safe EU based cloud storage with 2 GB free cloud storage space for life and options to connect multiple cloud accounts.

OwnDrive is easy to use free online storage service for businesses, professionals, and individuals to store, backup, collaborate and share files with others.

Syncany is a cloud storage and filesharing application with a focus on security and abstraction of storage.

Storage Made Easy provides a hybrid Cloud File Server Enterprise File Share and Sync Solution.

Tresorit is an online cloud storage service based in Switzerland and Hungary that emphasizes enhanced security and data encryption for Businesses.

InterPlanetary File System (IPFS) is a protocol designed to create a permanent and decentralized method of storing and sharing files.

pCloud provides a cloud storage solution for businesses of any size.

AeroFS is an enterprise file sync and share & collaboration software.

ASUS WebStorage is a Cloud Storage Service that helps user backup data, sync file between devices and share data to friends.

Pulse is a free (as in freedom), secure, and distributed file synchronisation engine.

Jungle Disk is an online backup software service.

An open, secure, and lightweight platform for your files and data.

CmisSync allows you to synchronize any CMIS-compliant ECM server with your local PC.

Memopal is a cloud-based storage application and service that enables users to store and synchronize computer files and share files and folders with others using the Internet.

Tarsnap is a secure online backup service for UNIX-like operating systems, including BSD, Linux and OS X.

Qtd Sync is a backup client and server.

Icedrive is a cloud storage provider with inbuilt encryption to data in cloud.

pyget is a p2p file sharing without the need for either internal or external plugins.

Jirafeau is a website permitting to upload a file in a simple way and give a unique link to it.

PowerFolder provides file sync, share and backup solutions for companies in the cloud or as private cloud on-premise.