Scribus

Scribus is an open-source desktop publishing (DTP) application designed to offer users control over their data and file accessibility. Unlike proprietary DTP programs that rely on binary formats, Scribus uses XML for its file format, allowing users to read, repair, and create files independently of the software.
With nearly 200 color palettes, Scribus supports various color models, including RGB, CMYK, and spot colors, backed by robust color management features. This ensures accurate color reproduction and consistency across different media.
The application excels in PDF creation, making it suitable for professional printing needs. Users can create reliable, high-quality PDFs that meet industry standards, ensuring predictable results and efficient handling of PDF-related issues.
Scribus is available for multiple operating systems and can be downloaded in both stable and development versions. The stable version (1.6.2) is recommended for production work due to its thorough testing, while the development branch (1.7.x) allows users to explore newer features. The software is actively maintained, with the source code accessible through their Subversion repository for those interested in contributing to its development.