openpyxl

open-sheet is a spreadsheet framework for coding agents that represents workbook models as React and TypeScript source. Instead of writing fragile A1-style cell addresses, models can use named references such as `ref('pl').column('revenue')`, which open-sheet resolves at compile time while handling cell addressing, formula references, recalculation, and formula-tree previews. It exports live formulas to XLSX, as well as CSV, HTML, and PDF formats, and reports cells it cannot compute as `#NOT_EVALUATED` rather than emitting a plausible number. The project provides an `npx @open-sheet/cli` initializer, is distributed under the MIT license, and is hosted at open-sheet.dev.

XY is an open-source Python charting library for web applications, notebooks, and static exports. It supports declarative charts and matplotlib-style conventions, with customization through Python, CSS, or Tailwind; outputs include HTML, PNG, SVG, and PDF. For small charts, XY sends individual points to the browser. For large datasets, its Rust core computes the data needed for the current screen resolution and can represent the result as a density surface. Panning, zooming, hovering, and selections rerun the process for the visible range, while selections can return the original data rows. The library is installable with pip or uv and supports interactions such as pan, zoom, hover, crosshairs, callbacks, and linked charts, along with layers, facets, responsive layouts, themes, axes, legends, and tooltips. The repository describes XY as an alpha project and notes that its matplotlib compatibility does not yet cover all charts and functionality.

office-engine is an open-source JavaScript library for viewing and editing DOCX, XLSX, and PPTX files in the browser. It progressively loads ZIP and XML content, parses files and performs layout, formulas, diagrams, and other processing in a Web Worker, while virtualized views render only visible pages, cells, and slides. It supports editing document text and formatting, spreadsheet cells and formulas, and presentation text, shapes, images, and slides; edited files can be saved back to their original formats, with only changed parts regenerated. The library also provides comments, real-time collaboration with cursors and offline synchronization, CSV and text-based document formats, read-only viewing of Apple Pages, Keynote, and Numbers files, and Mermaid, PlantUML, and Graphviz diagrams. It can be embedded through React components, a vanilla JavaScript API, or an <office-viewer> web component. The repository describes it as having no runtime dependencies or server requirement and distributes it under the MIT license.

OXR (Optical Everything Recognition) is an open-source AI document-parsing model and service from the SoMark team. It converts PDFs and document images into agent-oriented Markdown or JSON, extracting text, tables, formulas, code blocks, chemical equations, chemical structures, and other document elements with layout bounding-box coordinates. Its architecture separates layout analysis from the OXR recognition model, while integrating reading-order handling into recognition. The layout-analysis component is independently replaceable, allowing a custom layout model to be used while retaining OXR's content recognition and reading-order capabilities. During post-training, it uses a recursive self-improvement loop that targets samples the model handles incorrectly or weakly without human annotation. OXR can run locally on Linux with a supported NVIDIA GPU and is distributed with Docker and source-based deployment options. It also provides a web demo and parsing API, with compatibility for SoMark's Python and JavaScript SDKs and CLI tools. The repository is released under the custom OXR Open Source License, based on Apache 2.0 with additional terms.

OfficeCLI is an open-source command-line Office suite developed by iOfficeAI for AI agents to create, read, edit, render, and automate Word (.docx), Excel (.xlsx), and PowerPoint (.pptx) files without a Microsoft Office installation or external dependencies. It is distributed as a single binary and provides commands for creating documents, adding, modifying, moving, copying, and removing elements, reading text and structure as plain text or JSON, and saving changes. Its built-in HTML rendering engine converts DOCX, XLSX, and PPTX files to HTML or PNG for a render-and-review workflow. The `watch` command provides a live browser preview that refreshes after document changes, while the tool can also analyze formatting and structural issues, evaluate Excel formulas, and install an agent skill for supported AI coding agents.