ToolGPA

We grade productivity software. Every tool gets a letter from A to F on five things: value for money, the free plan and trial, features, ease of use, and the platforms it runs on and the average of those five is its GPA.

Prices come from each vendor's own pages, and every one is dated, so you can see when it was last checked and how it has moved since.

1,555 tools graded so far. The whole directory is at https://toolgpa.com.