When working on a game project, there are often small tasks that take more time than expected, such as calculating values, converting units, checking text, formatting data, or quickly testing something before adding it to the actual project.
I'm curious what kinds of small tools or utilities other game developers keep using during development. Do you prefer dedicated desktop tools, browser-based utilities, scripts, or features built directly into your engine?
What are some simple tools you find surprisingly useful in your everyday game development workflow?