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Simply put, Spider's products are great, and support is awesome. NumXL has taken the complexity out of developing sophisticated econometric models for my business. After looking at several alternatives, I found no other product could offer the simplicity, aesthetics, and flexibility for which NumXL delivers in spades. I use NumXL to quickly creates sophisticated models for clients with unique and challenging requirements. I can also attest to their superior customer support through their support staff.
Risk Manager, Israel