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

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

4Sync is an online syncing tool. Sync & sharing access with cloud storage.

git-annex is a distributed file synchronization system written in Haskell.

NitroShare is a network file transfer application for Windows, OS X, & Linux.

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

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 syn…

Droplr is a file-sharing tool for Mac. Effortlessly share files, screenshots, and screencasts with friends, colleagues, and clients.

OpenDrive is an online cloud storage solution.

TransferBigFiles.com makes it easy to deliver larger files (up to 1000 MB) to email recipients, and the files can even be protected.

GoAruna is a powerful Android file manager with an online file hosting, sending and sharing service.

FilesAnywhere is a provider of remote file storage and file sharing for consumers and corporations.