GitHub

ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with ...

The public API is still not stable and it is a very good idea to read release notes and migration guide before each update. Performance matters mostly for large files. For small files, few ms here or ...

Build an Excel Dashboard That Pulls CSV Data Without Opening Files

Learn how Excel IMPORTCSV refreshes linked CSV data, handles locale formats, and switches to IMPORTTEXT for semicolon ...
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Master Python with This Comprehensive Udemy Course

Get Python installed on your computer, no matter the operating system. Learn about Python’s data types like strings, lists, ...

OpenAI launches GPT-5.4 with native computer use mode, financial plugins for Microsoft Excel, Google Sheets

The big headlines on this release are efficiency, with OpenAI reporting that GPT-5.4 uses far fewer tokens (47% fewer on some tasks) than its predecessors).
GitHub

PHP library to make basic but fast read & write operations on existing Excel workbooks.

It handles XLSX/XLSM documents (Microsoft Excel 2007+, Office Open XML Workbook) using fast and simple low-level ZIP & XML manipulations, without requiring any library dependency, while minimising ...