KLayout is a simple layout viewer and editor for Mac.
- Support of GDS and OASIS file formats with automatic uncompression of zlib compatible formats.
- True, in-place editing in subcells, variant building function.
- Unlimited undo/redo.
- Smart partial editing function to stretch shapes, move edges or vertices.
- Copy and paste of shapes and whole cells, even to other layouts.
- Global transformation to flip/rotate image.