Letsupload is described as 'You can upload any type of files' and is an website in the Backup & Sync category. There are more than 100 alternatives to Letsupload, not only websites but also apps for a variety of platforms, including Windows, Mac, iPhone and Android. The best alternative is Nextcloud, which is both free and Open Source. Other great sites and apps similar to Letsupload are Dropbox (Freemium), Google Drive (Freemium), Syncthing (Free, Open Source) and MEGA (Freemium).
With 5GB online-storage HiDrive is a free WebDAV-DropBox-alternative, but not a portable Sync-App as DropBox is! Sharing content the easy way: HiDrive uses cloud technology to allow you contact with your favorite files from any computer or smartphone.
Use odrive to access your ADrive account, along with all your other cloud services, from a single folder on your desktop. Transfer files using SCP, SFTP or Rsync over SSH using any standard clients. Apps for Android and Apple iOS.
TransferBigFiles.com allows computer users to send large files to anyone. Videos, pictures, documents or any other file that is too large to send as an email attachment can be sent through TransferBigFiles.com
FileWhopper is a unique service that lets you send files or folders of ANY SIZE with no limits fast and securely. Encrypt & password-protect files; No monthly subscription or storage to buy, just a one-time fee based on file size.