EtherCalc is described as 'web spreadsheet. Your data is saved on the web, and people can edit the same document at the same time. Everybody's changes are instantly reflected on all screens. Work together on inventories, survey forms, list management, brainstorming sessions and more!' and is a Spreadsheet app in the office & productivity category. There are more than 50 alternatives to EtherCalc for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and Android. The best alternative is ONLYOFFICE, which is both free and Open Source. Other great apps like EtherCalc are LibreOffice - Calc, Microsoft Office Excel, Google Drive - Sheets and Etherpad.
EtherCalc is mainly a Spreadsheet App but alternatives to it may also be Word Processors or Office Suites. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of EtherCalc.
LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.org Calc, professional data miners and number crunchers will appreciate its comprehensive range of advanced functions.
Create gorgeous spreadsheets with Numbers for Mac. Get started with one of over 30 Apple-designed templates for your home budget, checklist, invoice, mortgage calculator, and more. Add tables, charts, text, and images anywhere on the free-form canvas.
Spread32 is a mini-Excel with all of the basic features that you would expect in a competent spreadsheet program. Run macros, draw objects, generate charts, calculate functions and formulas, its all here. And it reads and writes xls, csv, text, and pxl formats.