Abstract: Here is the explorer journal of Essie, tracing tools, resource worth to share, published every week. Cover: 1. Postgres.app Postgres.app is the easiest way to get started with PostgreSQL on the Mac. It includes most popular extensions you need to get started, even included the popular extension PostGIS for geo data. 2. Inspecting Web Views in macOS Some UI pages of MacOS are developed in web technical stack, read this article will show you how to inspect the source code with developer tool. 3. Swift Playgrounds Mac desktop tool from Apple, you could learn Swift from the game. 4. How Short Links Work Demonstrate short link with caddy proxy and PAC file for MacOS. For example http://x/12345 is short link for https://example.com/x/reports/12345. 5. Sloth Native Mac app that shows all open files, directories, sockets, pipes, and dvices in use by all running processes. Basically is UI for lsof. 6. Deskreen Deskreen is a desktop app that turns any device with a web browser into a s...