Ready to use
Sales & CRM
Open tool Follow-up Email Sequence Builder
Create a bounded, browser-local follow-up email sequence builder with visible assumptions, review guidance, and downloadable output.
Home/All tools
PUBLISHED TOOL DIRECTORY
Useful tools, ready when you are.
Every card opens a working workspace. Pick the job, use the tool, and move on.
LIVE DIRECTORY
Pick a tool. Get it done.
Ready to use
Math, Statistics & Probability
Open tool Four-Group Multinomial Coefficient Calculator
Count arrangements across four supplied nonnegative group sizes.
Ready to use
Physics
Open tool Fourier Number Heat Diffusion Calculator
Compare elapsed thermal diffusion with a squared characteristic length scale.
Ready to use
Calculators
Open tool Fraction Simplifier
Reduce a fraction to lowest terms and show decimal output.
Ready to use
Calculators
Open tool Free Cash Flow Calculator
Estimate cash after capital spending and entered asset-sale proceeds.
Ready to use
Finance & Business
Open tool Free Cash Flow to Equity Calculator
Reconcile equity cash flow after reinvestment and net debt flows.
Ready to use
Finance & Business
Open tool Free Cash Flow Yield Calculator
Express free cash flow to equity as a percentage of common-equity market value.
Ready to use
Physics
Open tool Free Fall Time Calculator
Free Fall Time Calculator with visible formula, field hints, and browser-local calculation.
Ready to use
Ecommerce & Marketplace
Open tool Free Shipping Threshold Calculator
Create a bounded, editable free shipping threshold calculator from supplied merchant data with transparent rules and commerce safeguards.
Ready to use
Legal, Compliance & Policy
Open tool Freelance Contract Checklist
Create a bounded, browser-local freelance contract checklist with visible assumptions, review guidance, and downloadable output.
Ready to use
Calculators
Open tool Freelance Hourly Rate Calculator
Turn an income goal, business costs, tax buffer, and billable capacity into a sustainable rate floor.
Ready to use
Finance & Business
Open tool Freelancer Rate Calculator
Estimate a sustainable hourly rate from annual targets and realistic billable capacity.