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Go to www.sonnetsoftware.com, fill in details and you can download Sonnet Lite 8.5. You can install immediately, but file size has a 1 MB limit, which is not much. When you register online, they send you a license file which increases file size to 16 MB, which is still quite a limit, but remember the software is free. Sonnet Lite is planar EM solver with similar possibilities and restrictions to Ansoft Ensemble SV . You can get that one free from www.ansoft.com.