@eli I don’t write unit tests but am a tester! Spreadsheets aren’t perfect, but I prefer them to anything else. (My last non-contracting employer loved to send test documents to clients in word, urgh.) Anything else feels too unwieldy, even some of the more custom offerings like Test Studio. At least spreadsheets are quick to update, and are easy if you want to create some sort of traceability matrix for requirements, etc. Versioning is a pain, and commenting, but if I’m the only one using it then I always go that route.