As shown in the image, I would like to achieve a result similar to the right one, where my object arrays along the spiral but does not rotate. The result I have right now is shown on the left. In rhino, I can choose different forms for curve array, for example, there is ‘road like’ or ‘stair like’. How do I achieve this in grasshopper?
Here is my gh file.
spiral + array along crv.gh (12.1 KB)
Your file came without geometry:
Maybe try orienting orienting objects to planes on the curve.
Sorry about that, I didn’t put a geometry because any geometry would work for this, I’m trying to get the object arrayed without rotating it. I did try using perp frame, but I think I’m stuck on getting the frames/planes horizontal, the frame would also rotate with the curve, which is essentially the same problem as the rotating object.
Sure but having your actual curve/objects helps with clarity 
You can use horizontal frames
instead of perpendicular ones, then you rotate or align those planes while staying horizontal along the curve.
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hframe did work but the objects are still rotating around.
HFrames planes are aligned with the curve tangent at each point? Do you prefer ‘World XY’ planes? Basic and boring. 
spiral_2024Aug6b.gh (11.3 KB)
btw here is the object!
Nevo NE04-1_3D.3dm (5.9 MB)
could you try inserting the object I just uploaded?
Something is up with the scale of the model so when I orient they’re huge compared to the curve - might be an easy fix for you - in the meantime I used Orient Direction
as it can help with scaling to test:
spiral + array along crv.gh (55.6 KB)
sorry about the scaling issue, it’s a metric to imperial problem…
but WOW this is super helpful, thank you soooo much!
I could but if you can’t, given the XY planes, you probably are in too deep.