– Combines the numerical capability of MATLAB with a spreadsheet like interface. Javelin Lotus Improv Resolver One – a business application development tool that represents spreadsheets as IronPython programs, created and executed in real time and allowing the spreadsheet flow to be fully programmed Spreadsheet 2000 Spreadsheet-related developmental software ExtenXLS – Java Spreadsheet Toolkit. Specifications -* 32-bit addressable memory on Microsoft Windows, i.e. ~2.5 GB. Historical In chronologial order, year launched, product, launched for which machine/OS. 1979, VisiCalc for Apple II with 32K RAM, the first widely used normal spreadsheet with A1 notation etc. 1980, SuperCalc for CP/M-80 operating system, included with early Osborne computers. 1982, ZX81 Memocalc, for low cost ~$100 personal computer with 16K RAM expansion, launched by Memotech in April 1982. 1982, Multiplan for CP/M operating system, later becoming Microsoft Excel, launched Aug 1982. 1983, Lotus 1-2-3 for DOS operating system, the first killer application of the IBM personal computer, it took the market from Visicalc in the early 1980s. 1983, Dynacalc for OS-9 a Unix-like operating system, similar to VisiCalc. 1984, Lotus Symphony for DOS operating system, the follow-on to Lotus 1-2-3 1985, Boeing Calc for MVS a Unix-like operating system and DOS operating system, written by subsidiary of aviation manufacturer Boeing. 1985, StarOffice for DOS operating system, later becoming OpenOffice.org then currently LibreOffice and Collabora Online. 1985, 20/20, for DOS operating system, competitor to 1-2-3 with database integration, real-time data updating, multiplatform. 1986, VP Planner for DOS operating system, similar in look and feel to Lotus 1-2-3, but included 5 level multi-dimensional database 1988, Wingz for Classic Mac OS operating system, a multi dimensional Spreadsheet from Informix. 1991, 3D-Calc for Atari ST operating system, multi-dimensional spreadsheet 1991, Lotus Improv for NeXTSTEP operating system, novel design that went beyond A1 notation. See also Comparison of spreadsheets Logical spreadsheet References Spreadsheets