Small tools that do one job each.

Thimbleroot makes a Chrome extension for reading JSON, a few spreadsheet calculators and a WordPress plugin data tool. [TK final intro, M2]

Chrome
Peekbrace
Shows raw JSON as a tree you can fold, in the tab you opened. [TK]
Version 0.1.4. Free.
Spreadsheet
Reseller Fee Calculator 2026
eBay, Poshmark, Mercari, Depop and Etsy fees for one sale, side by side. [TK]
Google Sheets and Excel. Free, pay what you want.
Apify
WordPress Plugin Intel
Installs, ratings, days since update and support resolution rate for WordPress.org plugins. [TK]
Pay per result on Apify.

Peekbrace