I don't found any Free extension for auto cross sell products.
Anyone have Code for auto cross sell products for all categories (not based on particular category Id)??
Please if you have Share.
Thanks in anticipation.
It is a more complex topic. There is rather an algorithm to do this, as opposed to just a piece of code.
At Cart Defender we will have an out-of-the-box feature to recommend products. Automatically it will create the cross-sell opportunitites for your visitors. It won't be free, however, as we expect that to increase sales and provide a lot of value to the visitors.
At this point I could only propose a custom-made product bundling / recommendation feature.
Cart Defender - slash cart abandonment and drive sales with unlimited intelligent conversion popups. Forget A/B tests because Cart Defender optimizes itself automatically. Web Summit 2016