I create free digital products. So far I have created the following fully free products

Redfin Open House Filter

Redfin School Preview

Redfin Commute Helper

Reel Racer - YouTube, TikTok & Instagram Speed Controller

Trigger Warning Highlighter

Slickdeals Percentage Calculator

Tab Resource Monitor

Closed Tab Recovery

Dominion VA Energy Monitor

Coupons Swap

Coupon Sharing Hub

and a few which have free versions with useful features with upgrades to premium for more features

YouTube Ad Zen

Read Only Monitor

Youtube Karaoke & Lyrics

Console Error AI Fixer