PigeonFiles - The #1 Google Drive uploader app for allowing others to upload files to your Google Drive. Create your first secure upload page for FREE in 30 seconds.
AppMySite - An automated no-code app builder
Uppy.io - Next open source file uploader for web browsers
AppyPie AppMakr - AppMakr is a browser-based platform designed to make creating your own iPhone app quick and easy.
Uploader Window - Easy File Uploader for your websites and apps
AppyBuilder - An App Inventor 2 spin-off. Formerly called AILiveComplete.