monday CRM - monday sales CRM is a customizable customer relationship management software for every business with support for unlimited leads and accounts and prepaid plans.

WrappingGum - Create a sales page for your gumroad products

Composity - Composity is software solution for more efficient business! CRM, Inventory, POS, Invoicing, Financials and Accounting, Sales and Purchase modules, Document management, Website and eCommerce

FilePond.js - Uploads anything you throw at it

Bigin by Zoho CRM - Pipeline-centric CRM built and priced for small businesses

GumHub - Sell access to your GitHub repos with Gumroad