Go language library for reading and writing Microsoft Excel™ (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets
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Free, open-source AI Office suite: Docs, Sheets, Slides, PDF, Markdown and HTML editors with a built-in AI agent, plus a `genoffice` CLI and agent skill so Claude Code, Codex and Cursor can create and edit real .docx/.xlsx/.pptx files locally. Bring your own key. macOS, Windows & Linux.
Leantime is a goals focused project management system for non-project managers. Building with ADHD, Autism, and dyslexia in mind.
Grist is the evolution of spreadsheets.
Matplotlib styles for scientific plotting
- matplotlib-style-sheets
- matplotlib-figures
- scientific-papers
- thesis-template
Google Sheets Python API
- gspread
- google-sheets
- google-sheets-api-v4
- google-sheets-api
Jspreadsheet is a lightweight JavaScript data grid component for creating interactive data grids with advanced spreadsheet controls.
- javascript
- spreadsheet
- table
- datatables
ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts, spreadsheets and presentations, forms and PDF, fully compatible with Office Open XML formats: .docx, .xlsx, .pptx and enabling collaborative editing in real time.
Fast. Easy. Done. Processing spreadsheets without worrying about large files causing OOM.
Open-source office suite pack that comprises all the tools you need to work with documents, spreadsheets, presentations, PDFs, and PDF forms on Windows, Linux, and macOS
A minimalist command line knowledge base manager
- knowledge
- cheatsheets
- procedures
- methodology
Hierarchical spreadsheet: a free-form data organizer that replaces outliners, mind maps and spreadsheets.
- brainstorming
- cpp
- cpp20
- cross-platform
Roo provides an interface to spreadsheets of several sorts.
HyperFormula is an open-source headless spreadsheet for business web apps. It comes with over 400 formulas, CRUD operations, undo-redo, clipboard support, and sorting.
- calculation-engine
- formula
- typescript
- evaluator
A minimalist Windows desktop sticky note tool. It puts a few quiet, usable, and unobtrusive sheets of paper on your desktop. Native WPF, with support for to-dos and Markdown.——极简 Windows 桌面便签工具。让桌面上有几张安静、可用、不会打扰人的纸。WPF 原生，支持待办与 Markdown。
- avalonedit
- csharp
- markdown
- minimalist
PowerShell module to import/export Excel spreadsheets, without Excel
EPPlus-Excel spreadsheets for .NET
- net
- netframework
- netcore
- netstandard
Spreadsheet Architect is a library that allows you to create XLSX, ODS, or CSV spreadsheets super easily from ActiveRecord relations, plain Ruby objects, or tabular data.
- spreadsheet
- xlsx
- ods
- csv
One app for every document. Built for AI agents. An open-source desktop office suite written in Rust: documents, spreadsheets, slides, PDF, Markdown, code and rich text, opened, edited and saved in one row of file tabs. The same binary is a command line that AI agents call directly.
An Actionscript 3.0 package to read .xlsx Open XML Excel or Open Office spreadsheets
Elixir library for fetching Google Spreadsheet data in CSV format
A Java library (Jackson extension) for reading and writing Excel spreadsheets (XLSX/XLS) as POJOs.
Excel Writer: a standalone, portable Ada package for producing Excel spreadsheets
- ada
- ada-language
- excel
- excelwriter