Any Recs For Solid Data Analysis Tools That Don’t Leak My Info?

I’m hunting for tools to help crunch data without the manual headache. What are you guys actually using for deep analysis, especially for mixing messy Excel sheets with PDFs?

Edit: I’ve messed around with a few—ChatGPT is decent for basic formulas, and Infinisynapse has been a game changer. It’s pretty sick because it handles cross-source analysis locally on my machine, so I can scrape web data straight into my DB without worrying about privacy leaks.