Numi App - Numi is a beautiful text calculator for Mac.
Payment Pages by involve.me - Collect Stripe & PayPal payments online with custom pages
ConvertAll - A comprehensive unit conversion program.
SuperPay - Get paid faster with your own custom payments page
Calculator++ - Calculator++ is an advanced, modern and easy to use scientific calculator.
Checkout Page - Sell on your site with customizable checkouts. Tailor-made one page checkouts to sell digital products & services without an ecommerce store.