Open Source File Format Libraries for Every Platform

MIT-licensed SDKs for working with documents, spreadsheets, presentations, 3D models, and more — available for Python, TypeScript, JavaScript, .NET, Java, Go, PHP, C++, and other popular platforms.

Available Now

Production-ready FOSS libraries you can install today. Each library is MIT-licensed, ships with zero proprietary dependencies, and is published to the standard package registry for its platform.

Aspose.Words for FOSS

Work with Word documents programmatically — free and open-source, no Microsoft Word required. Available for .NET and Python.

Aspose.Words FOSS for Python

Aspose.Words FOSS for .NET

Aspose.PDF for FOSS

Create, edit, split, merge, encrypt, and render PDF documents to raster images. MIT-licensed open-source libraries for .NET, C++, Go, Java, Python, and TypeScript with no runtime fees.

Aspose.PDF FOSS for Python

Aspose.PDF FOSS for .NET

Aspose.PDF FOSS for Java

Aspose.PDF FOSS for C++

Aspose.PDF FOSS for TypeScript

Aspose.PDF FOSS for Go

Aspose.Cells for FOSS

Create, read, modify, and save Excel .xlsx workbooks — free, MIT-licensed, zero Office dependency. Available for .NET, C++, Go, Java, Python, Rust, and TypeScript.

Aspose.Cells FOSS for Python

Aspose.Cells FOSS for .NET

Aspose.Cells FOSS for Java

Aspose.Cells FOSS for C++

Aspose.Cells FOSS for TypeScript

Aspose.Cells FOSS for Go

Aspose.Cells FOSS for Rust

Aspose.Email for FOSS

Read, create, and process Outlook MSG files, CFB containers, and EML messages — free and open-source, available for .NET, C++, and Python.

Aspose.Email FOSS for Python

Aspose.Email FOSS for .NET

Aspose.Email FOSS for C++

Aspose.Slides for FOSS

Create, read, and edit PowerPoint presentations — free and open-source, available for .NET, C++, Java, and Python.

Aspose.Slides FOSS for Python

Aspose.Slides FOSS for .NET

Aspose.Slides FOSS for Java

Aspose.Slides FOSS for C++

Aspose.Imaging for FOSS

Detect image formats and read header metadata across 11 formats. Open-source, MIT licensed, with zero external dependencies.

Aspose.Imaging FOSS for .NET

Aspose.BarCode for FOSS

Generate standards-compliant barcodes across seven symbologies. Open-source, MIT licensed, pure Python with no native dependencies.

Aspose.BarCode FOSS for Python

Aspose.Note for FOSS

Read, convert, and process Microsoft OneNote files, free and open-source, with no Microsoft Office required.

Aspose.Note FOSS for Python

Aspose.3D for FOSS

Load, create, transform, and export 3D scenes — free and open-source, available for .NET, Java, Python, and TypeScript.

Aspose.3D FOSS for Python

Aspose.3D FOSS for .NET

Aspose.3D FOSS for Java

Aspose.3D FOSS for TypeScript

Aspose.HTML for FOSS

Parse HTML into a standards-based DOM, apply CSS stylesheets, and compute styles. Open-source, MIT licensed, available for Python.

Aspose.HTML FOSS for Python

Aspose.Page for FOSS

Export PostScript, EPS, and XPS documents to PDF and raster images. Free, MIT-licensed, no Adobe or Ghostscript required.

Aspose.Page FOSS for Python

Aspose.Font for FOSS

Load, inspect, convert, and subset font files programmatically. Supports variable fonts, web packaging, and animation preview. Open-source, MIT licensed.

Aspose.Font FOSS for Python

Aspose.TeX for FOSS

Compile and convert TeX and LaTeX documents. Open-source, MIT licensed, with no external TeX engine required.

Aspose.TeX FOSS for Python

Coming Soon: More Platforms, More Formats

We are expanding the Aspose FOSS ecosystem to cover every major platform and language. Expect dedicated open source libraries for .NET, Java, C++, Go, PHP, JavaScript, and beyond — bringing the same MIT-licensed, no-dependency philosophy to your language of choice.