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# Sheet Reserve
> Spreadsheet templates for engineering, bidding, chemistry, finance, accounting and management, plus public datasets, as XLSX, CSV, ODS, XML or Numbers. Membership $19.85 a year via Gumroad. Developed by Yunus Emre Vurgun (https://yunusemrevurgun.com).
## Topic hubs
- [Spreadsheet file formats and open datasets](https://sheetreserve.com/topics/spreadsheet-files-and-data): XLSX, CSV, ODS, XML and Numbers compared, plus the public datasets and guides on using them.
- [Engineering spreadsheet templates](https://sheetreserve.com/categories/engineering): Engineering calculation templates with live formulas: beams, pipe flow, electrical loads, tolerances and bills of materials.
- [Industrial engineering spreadsheet templates](https://sheetreserve.com/categories/industrial-engineering): Industrial engineering templates with live formulas: OEE, time studies, line balancing, EOQ and reorder points, and SPC control charts.
- [Sales engineering spreadsheet templates](https://sheetreserve.com/categories/sales-engineering): Sales engineering templates: customer ROI and payback, total cost of ownership, RFP compliance matrices, quote configurators and proof-of-concept trackers.
- [Architecture spreadsheet templates](https://sheetreserve.com/categories/architecture): Architecture templates for room and area schedules, door and window schedules, space programs, cost estimates and occupant loads.
- [Bidding spreadsheet templates](https://sheetreserve.com/categories/bidding): Bidding templates for contractors and owners: bid tabulation, subcontractor bid leveling, markup and margin, unit price bid schedules and bid/no-bid decisions.
- [Chemistry spreadsheet templates](https://sheetreserve.com/categories/chemistry): Chemistry lab templates: molar mass, solution and dilution prep, reaction stoichiometry and yield, buffer pH and Beer-Lambert calibration curves.
- [Finance spreadsheet templates](https://sheetreserve.com/categories/finance): Finance templates with real