Zen2B2 is a suite of 34 free, browser-based business utilities for SMEs and freelancers. No paywalls, zero signups, and 100% client-side privacy — your invoices, payroll, and client data never touch a server. Features include: PDF Invoice & PO Generator, Weekly Timesheet Calc, Break-Even & Profit Margin Calcs, Contract/NDA Builder, PDF Merge/Split, and Bulk Image Resizer.