Perkeep

vs

MegaUpload

Filestash is a free and open-source Dropbox-like file manager that can be used to manage data anywhere. Filestash allows you to bring your own backend or create your own by implementing a simple interface. Currently, Filestash works with Amazon S3, SFTP, FTP, FTPS, Minio, Backblaze, GIT, Github, Gitlab, WebDav, LDAP, CalDAV, CardDAV, Mysql, Dropbox, Google, Drive Gogs Gitea. Through Filestash intuitive interface you can manage photos and files and easily share then with friends and family via regular links or social accounts.

Sia is a decentralized storage platform secured by blockchain technology. The Sia Storage Platform leverages underutilized hard drive capacity around the world to create a decentralized data storage marketplace that is more reliable and lower cost than traditional cloud storage providers. With Sia you can store files in the decentralized cloud without signup requirements, servers and trusted third-party providers. On average, Sia's decentralized cloud storage costs 90% less than incumbent cloud storage providers. Storing 1TB of files on Sia costs about $1-2 per month, compared with $23 on Amazon S3.

Syncthing is a free and open-source continuous file synchronisation software that utilise peer-to-peer technology. The software allows users to send files between two or more computers in real time, safely protected from prying eyes. Syncthing is available for Windows, Mac, Linux, Android, Solaris, and BSD.