End users have been building applications on top of spreadsheets for decades now. In fact, arguably users of spreadsheets such as Microsoft Excel and Lotus 1-2-3 are the original citizen developers.

Open source collaboration software vendor Open-Xchange has added a spreadsheet function to its open-source, web-based productivity suite, allowing the online editing and sharing of Microsoft Excel ...

I’ve been on a mission to cut down on bloated and paywalled software wherever I can, especially when open-source tools do the job just as well, if not better. I rarely use Excel to begin with, but ...