More information here: http://artlandia.com/products/SymmetryWorks/

This plug-in is only for use in Adobe Illustrator CC 2015 64bit on Windows.

--------------------------------------

Artlandia SymmetryWorks is a plug-in for making repeat patterns in Adobe Illustrator.
Whether you are an experienced professional or a student, SymmetryWorks empowers you to create pattern designs a hundred times faster, better, and more imaginatively—like NO other software does. This is the tool of choice for surface and textile designers, interior decorators, stationery developers, web designers, illustrators, sculptors, fine artists, and everyone who creates patterns. Order
Save hours of work and painstaking effort. With SymmetryWorks, your motif is hot-linked to the pattern. Edit the motif and the pattern rebuilds instantly. All the necessary rotations, reflections, and other transformations, along with color reversals of your choice, are applied automatically behind the scenes. It's like you magically edit dozens of elements at once.

Main features
Creating patterns with a click
Interactive editing
Easy adding of new objects
Insertion mode
One-click changing of symmetry
Replicas (live copies) and multi-replicas
All popular repeat systems
Layouts (pattern templates)
Wide support for Illustrator objects, including symbols, compound shapes, blends, and raster images
Pattern swatch export
Nested patterns
Engineered designs
Harmonic growth designs
Guilloché patterns
Optical art

The SymmetryWorks LP boost
Live updating of SymmetryWorks pattern swatches
Live updating of symbol components
New symmetry combinations
Convenient parallel development

New in SymmetryWorks 6
Counterchange symmetry operations
Custom color reversals in cells and tiles
Color reversals in replicas
Automatic color inversion
Fully editable color reversal schemes
Improved efficiency