Tulzu is a collection of 27 free browser-based tools across 4 categories: Finance: EMI, SIP, compound interest, salary breakup, FD, GST Health: BMI, calories, water intake, ideal weight, macros Developer: JSON formatter, Base64, UUID, regex tester, JWT decoder, cron parser Text: word counter, diff, slug generator, case converter No sign-up. No data sent to servers. Works in any browser. Built for people who Google "EMI calculator" and land on sites full of ads and popups.