Written in native C#, FileFormat.Cells for .NET is a free, open-source SDK designed to easily create, load, and modify Microsoft Excel spreadsheets with just a few lines of code.

Smart WhatsApp Automation | All-in-One WhatsApp Bulk Messaging with free Gemini AI Agent & Images

Automated payment reminder tool using Google Sheets, Apps Script, and Telegram Bot API. Generates personalized, click-to-send WhatsApp links based on smart logic and reminder schedules — ideal for tracking pending payments or invoices.2025

A modular, config-based framework to streamline Google Sheets development with Apps Script. Define layout, validation, formatting, and automation logic in one place using a central SHEETCONFIG and the SmartSheet utility class.

Google Sheets-based CRM automation project simulating lead management for a bootcamp academy

This is an excel add-in that provides the necessary tools to streamline design process from structural analysis software result (SAP2000 and Oasys GSA) to calculation report preparation using your own excel spreadsheets.

A Google Apps Script project that automates Daily Time Record (DTR) calculations and student time aggregation directly within Google Sheets.

Este repositório contém um estudo de caso de automação de planilhas em Python para análise de vendas de carros por fabricante ao longo dos anos

A Google Apps Script project for managing shared expenses. It processes raw expense data, splits the expenses among participants, calculates contributions, and provides transaction recommendations to settle debts.

This repository provides a suite of high-performance, thread-safe Excel User Defined Functions (UDFs) developed using the Excel-DNA framework in C#. These functions significantly extend Excel's built-in capabilities for power users and developers, offering tools for advanced calculation control, dynamic data processing, and in-memory storage.

Internal project dashboard and automation toolkit for Ace Remodeling TX — streamlining project tracking, payments, and team workflows using Google Sheets + Apps Script + TypeScript.

A Google Apps Script automation that connects Google Sheets with Telegram for instant notifications. This system automatically sends customizable Telegram messages when sheet data changes, perfect for tracking form submissions, data updates, and automated alerts.