SC-IM is described as '- Spreadsheet Calculator Improvised – An ncurses spreadsheet program for the terminal' and is a Spreadsheet in the Office & Productivity category. There are more than 50 alternatives to SC-IM for a variety of platforms, including Windows, Online / Web-based, Mac, Linux and Android. The best alternative is LibreOffice - Calc, which is both free and Open Source. Other great apps like SC-IM are Microsoft Office Excel (Paid), Google Drive - Sheets (Free), Gnumeric (Free, Open Source) and EtherCalc (Free, Open Source).
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.
EtherCalc is a 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!
Create gorgeous spreadsheets with Numbers for Mac. Get started with one of many 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.
PlanMaker is a Microsoft Excel-compatible spreadsheet, part of SoftMaker FreeOffice, that opens all your Excel workbooks directly and gives you many time-saving features. It's available for free included in the FreeOffice suite.