socialcalc

Dan Bricklin wrote a JavaScript spreadsheet engine around 2008 https://github.com/DanBricklin/socialcalc. I extended it and adapted it to Drupal CMS around that time https://www.drupal.org/project/sheetnode.

nice project ! and attempt to modernize the spreadsheet tech stack. be warned though, that the feature-set of the modern spreadsheet is gigantic, with tentacles in hundreds of nooks and corners. Any attempt to play catch-up is a losing proposition. Hence you could position it so as not to directly compete with excel - in areas that are new or emerging. trivia: js based https://ethercalc.net/ is in turn is derived from https://github.com/DanBricklin/socialcalc written by the spreadsheet inventor dan bricklin

Somewhat random, but spreadsheets continued to evolve after VisiCalc (obviously). Here is one by the inventor of VisiCalc, Dan Bricklin, on github: https://github.com/DanBricklin/socialcalc Audrey Tang (who happens to currently serve as the Minister of Digital Affairs of the Republic of China (Taiwan)) created the Node.js port of SocialCalc, EtherCalc: https://github.com/audreyt/ethercalc Audrey made a fascinating write up of SocialCalc for The Architecture of Open Source Applications https://aosabook.org/en/v1/socialcalc.html

There is also Dan Bricklin's socialcalc https://github.com/DanBricklin/socialcalc which has some relatively active forks including audreyt's ethercalc https://github.com/audreyt/ethercalc You can see what the spreadsheets look like at http://www.ethercalc.org/ For just viewing and editing spreadsheets without social features, you can ignore the servers included, the javascript widget works just fine by itself. Dan Bricklin co-authored VisiCalc, the first spreadsheet program for the masses.