Open-source alternatives to Fesod

Spout is a spreadsheet file processing library and multi-format generator designed for reading and writing CSV, XLSX, and ODS files. It functions as a stream-based parser that processes large spreadsheet files incrementally to avoid loading entire documents into memory. The library provides capabilities for programmatic spreadsheet generation and data extraction. It supports custom content styling, allowing for the application of fonts, backgrounds, borders, and number formats to individual cells or rows. Beyond basic file input and output, the project covers workbook manipulation through se

ExcelJS is a Node.js spreadsheet engine and manipulation library used for reading, writing, and modifying XLSX and CSV files. It functions as a formatting tool and asynchronous streaming parser for generating complex workbooks containing formulas, rich text, and custom styles. The library is distinguished by its ability to process large datasets using asynchronous data streaming and incremental processing, which minimizes memory usage during data extraction and file generation. Its capability surface covers comprehensive data management, including structured tables, named ranges, and cell da

XlsxWriter is a library for generating spreadsheets in the XLSX format, functioning as an Excel workbook writer and file generator. It provides the capability to write data, apply cell formatting, and build complex layouts across multiple worksheets. The project distinguishes itself with a memory-optimized writing mode that flushes large datasets to disk row-by-row, enabling the creation of files exceeding 4 GB while minimizing RAM consumption. It also includes a specialized mechanism for embedding binary project files and digital signatures to enable VBA macros and signed scripts within work

PHPExcel is a PHP spreadsheet library used for programmatically reading and writing spreadsheet files in various formats. It utilizes an in-memory spreadsheet model that maps spreadsheet structures to a hierarchy of objects for programmatic manipulation. The library functions as an Office Open XML processor for generating and manipulating XLSX documents and serves as a reader for extracting data and structure from legacy binary XLS files. It also includes tools for CSV data integration and importing. The project provides capabilities for automated report generation and spreadsheet data extra

This project is a Model Context Protocol server that provides an interface for AI agents to programmatically create, read, and modify Excel workbooks. It serves as a bridge that enables large language models to perform spreadsheet automation and data visualization. The server allows AI agents to generate native Excel charts and pivot tables from raw data, transforming structured information into visual summaries. It provides a mechanism for remote spreadsheet management through a protocol-based connectivity layer. The system covers a broad range of spreadsheet manipulation capabilities, incl

NPOI is a pure .NET library for reading and writing Microsoft Office files in both legacy binary (.xls) and modern OpenXML (.xlsx, .docx) formats, operating entirely without requiring Microsoft Office or COM interop. It runs on Windows and Linux under .NET Standard and .NET Framework runtimes, using only managed code to parse and generate Office documents. The library provides comprehensive spreadsheet capabilities, including creating, editing, and reading Excel workbooks in both .xls and .xlsx formats, with support for cell formatting, styles, and formulas. It includes a streaming row-by-row

This project is a Model Context Protocol server that enables artificial intelligence assistants to interact directly with Microsoft Excel files. It functions as a bridge, allowing external systems to read, write, and modify spreadsheet data through a standardized interface. By supporting both direct file manipulation and headless application automation, the server provides a comprehensive utility for programmatic workbook management. The server distinguishes itself by combining data processing capabilities with a visual rendering pipeline. It can generate image snapshots of specific spreadshe

This project is an educational resource and a collection of instructional materials for performing data manipulation and statistical analysis using Python. It provides a comprehensive set of guides and code examples for using the Pandas, NumPy, and Matplotlib libraries to analyze structured data. The resource includes a dedicated guide for reshaping, cleaning, and aggregating tabular data and time series via Pandas, alongside a reference for high-performance vectorized operations and linear algebra using NumPy. It also features tutorials for creating publication-quality charts, distribution p

xlwings - Make Excel fly with Python!

Laravel-Excel is an integration library for importing and exporting spreadsheet data between Laravel applications and Excel or CSV files. It provides a suite of tools for bidirectional spreadsheet integration, including a system for reading workbooks and mapping data into database models. The library distinguishes itself through a background processing system that handles large imports and exports using chunking and job queues. It supports template-driven exports by converting HTML tables from view templates into spreadsheet cells. The toolset covers broad capabilities for large dataset proc

Luckysheet upgraded to Univer

ExcelDataReader is a C# library used to extract data and metadata from Microsoft Excel spreadsheets and CSV files. It functions as a workbook parser that converts spreadsheet content into structured data sets for programmatic access and iteration. The project includes a specialized metadata extractor for retrieving cell-level details, such as number formats, styles, row heights, column widths, and merged cell ranges. It also provides a stream processor for parsing plain text CSV files with customizable encoding and separator detection. The library supports the OpenXML standard for modern spr

This is a Laravel Excel integration library used for importing and exporting spreadsheet files within the Laravel framework. It functions as both a spreadsheet data exporter for converting database queries and collections into files and a spreadsheet data importer for mapping workbook data to database models. The library includes an HTML to spreadsheet converter that transforms HTML table templates into downloadable documents to preserve specific layout designs. It supports large dataset exports via background queuing and processes bulk data imports through chunked reading and batch inserts.

smartTable is a data grid component and table view framework for Android. It functions as an annotation-driven UI library that uses class and field markers to automatically map data models to visual columns and define table properties. The project distinguishes itself through deep spreadsheet integration, providing tools to import and export data to and from Excel files while preserving cell formatting, styles, colors, and alignment. It also features a canvas-based rendering system that supports complex grid layouts with merged cells, frozen headers, and column locking. The library covers a

Excelize is a Go library designed for reading, writing, and modifying Microsoft Excel files in XML-based formats. It functions as a spreadsheet file parser and generator that enables the programmatic extraction and modification of data. The library includes a streaming spreadsheet processor to handle massive datasets incrementally, preventing system memory exhaustion during large-scale read and write operations. It also provides a chart generator to convert worksheet values or external data sources into visual representations within the spreadsheet. Beyond core file processing, the project c

Luckysheet is a web-based spreadsheet component and collaborative editor designed for rendering interactive grids in a browser. It functions as an Excel-compatible data grid that allows for the import and export of spreadsheet files while maintaining tabular data structures. The project provides real-time collaborative editing, synchronizing changes across multiple users to enable simultaneous work on shared documents. It also serves as a JavaScript data visualization tool, converting cell values into graphical charts and visual representations. The platform covers a broad range of data mana

EPPlus is a .NET library designed for programmatically creating, manipulating, and styling Excel files using the Open XML format. It functions as an office file manipulator and spreadsheet processor that allows for the generation and modification of workbooks without requiring the local installation of office productivity software. The library enables the creation of complex workbooks featuring charts, pivot tables, and conditional formatting for automated reporting. It includes an internal calculation engine to execute embedded formulas and spreadsheet logic, and provides security features s

JSON-java is a Java library for parsing and generating JSON text and mapping it to Java objects and collections. It functions as a serialization framework for converting class instances and data structures into standardized JSON strings. The project includes a JSON pointer implementation for retrieving specific values from documents using string or URI fragment representations. It also provides a converter for translating data structures between JSON and XML, as well as a translator for transforming data between JSON and web formats such as HTTP headers, cookies, and comma-delimited lists. T

Handsontable is a JavaScript data grid that provides a spreadsheet-like interface for managing and editing large datasets within web applications. It functions as a virtualized data table that renders only visible cells to maintain performance, paired with a synchronization layer that binds the grid to underlying data structures. The project distinguishes itself through a built-in spreadsheet calculation engine for evaluating mathematical and logical expressions and a dedicated tool for exporting grid content into Excel XLSX files. It ensures interoperability with external spreadsheet softwar

YamlDotNet is a YAML serialization library and data mapping tool for .NET. It functions as a parser and generator that converts between .NET objects and YAML formatted text for data storage and configuration. The project provides capabilities for YAML document parsing and data object mapping. It transforms YAML streams into low-level representations or high-level object models for programmatic analysis and converts structured data objects back into valid YAML strings. The library covers general data serialization and configuration file management, allowing application data structures to be m

MyBatis-Flex is an object-relational mapping framework for Java that extends MyBatis with a fluent API and automated CRUD operations. It provides a data access suite featuring an automatic CRUD data mapper, a type-safe SQL query builder, and a row-based query engine for manipulating records without predefined entity classes. The framework includes a multi-dialect SQL translator that converts generated syntax across different database engines, such as MySQL, PostgreSQL, and Oracle. It further distinguishes itself by offering annotation-free entity mapping using runtime reflection and naming co

gogcli is a single command-line binary that manages Gmail, Drive, Calendar, Docs, Sheets, Slides, Forms, Apps Script, Contacts, People, Tasks, Classroom, Chat, Groups, Keep, and Workspace Admin services through a predictable service resource method grammar. It authenticates across multiple Google accounts using OAuth, service accounts, access tokens, or application default credentials, storing credentials in the OS keyring for secure persistence. The tool also exposes a Model Context Protocol server over stdio that registers typed tools for agent clients, and can invoke any Google Discovery-

GAM is a command-line tool for administering Google Workspace and Cloud Identity. It translates command-line arguments into structured API calls, enabling administrators to manage users, groups, organizational units, and domain settings across a Google Workspace environment. The tool handles authentication through OAuth2 flows, service accounts, and workload identity federation, and supports multi-tenant configurations for managing multiple domains or cloud projects from a single installation. GAM distinguishes itself through its batch processing and automation capabilities. It can process la

GitPython is a Python library that provides a programmatic interface for interacting with Git repositories. It functions as a version control API and a wrapper that allows for the execution of Git commands and the manipulation of repository commits, branches, and working trees. The project acts as a Git object manipulator, allowing users to inspect and modify internal data structures and blobs. It provides a structured layer for executing command line instructions with integrated error handling and data retrieval. The library covers a wide range of capabilities including repository initializ

Scriban is a .NET text templating engine and embedded scripting language used for dynamic text generation. It functions as an abstract syntax tree manipulation tool and a template parser, allowing for the conversion of scripts into visitable trees for analysis, modification, and rendering. The engine is specifically designed for Native AOT compatibility, utilizing a reflection-free API to execute templates in trimmed environments. It also provides a dedicated parser and conversion system for Liquid templates, enabling the migration and execution of Liquid scripts within .NET. The project cov

sqlite-net is a lightweight object-relational mapper and data access layer for SQLite. It provides tools for translating application classes into database tables, managing records through an entity mapper, and implementing local data persistence. The library includes an encrypted wrapper that secures database files using connection keys and native encryption configurations. It also features a data access layer that supports both synchronous and asynchronous operations to maintain application responsiveness during disk access. The project covers a range of database management capabilities, in