I like gdfxr a lot, even placeholder sounds can help you work on sound timing and mixing and give you a way better sense of how things are feeling. As a bonus for some cases the sounds you can generate are perfectly fine for final usage.

The only one I’ve ever tried was Dialogue Manager for Godot 4, which works pretty well for things like point-and-click games.

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• Cyclops: Lets you very easily block out levels (like Hammer)
• Dialogic: Really in-depth dialogue/visual novel tool
• Scatter: Great for scattering models around, has a lot of features
• Spatial Garden: Like Scatter but specifically for foliage (also works in 4.x which I don’t think Scatter supports yet)

The one I use the most is Godot-sqlite. But my biggest projects are not games.