Another example: a kit to write your own specialized (scalable but not planet-scale) search engine. An user-friendly free ⁸executable app that runs a commercial

Another example: a kit to write your own specialized (scalable but not planet-scale) search engine. An user-friendly free ⁸executable app that runs a commercial-grade large language model on your Mac, with automatic configuration and updates. A music player app that uses your S3 / D3 storage for songs and manages tagging (with Musicbrainz?) and uploads / CD ripping for you. I'm sure all these things exist already, but they're not finished as a commercial product is, because it's hard work.