WPDASH - WPDASH is a multifunctional manager for unlimited WordPress sites.
WrappingGum - Create a sales page for your gumroad products
Google Sites - Access Google Sites with a free Google account (for personal use) or G Suite account (for business use).
FilePond.js - Uploads anything you throw at it
Nextsale - Nextsale makes users feel the experience of shopping in a dynamic website.
GumHub - Sell access to your GitHub repos with Gumroad