libpng is the PNG image format reference implementation. Portable Network Graphics are the most widely used raster image format, patent-free, based on lossless data compression, support indexed/paletted, grayscale, and 24 or 32 bit truecolor images with transparency. It's also an highly extensible container format, with built-in color profiles and representation information, textual meta data, filters, progressive interlacing, and permits animations in the derived APNG or MNG formats.
RawTherapee is a powerful, cross-platform raw photo processing system, released as Free Software (GPLv3). It is designed for developing raw files from a broad range of digital cameras and targeted at users ranging from enthusiast newcomers who wish to broaden their understanding of how digital imaging works to professional photographers. RawTherapee provides a powerful suite of tools for you to produce amazing photos and showcase your creativity. RawTherapee benefits users who take the time to
JPEG XL was standardized in 2022 as ISO/IEC 18181. The core codestream is specified in 18181-1, the file format in 18181-2. Decoder conformance is defined in 18181-3, and 18181-4 is the reference software.
GNU LibreDWG is a free C library to handle DWG files. It aims to be a free replacement for the OpenDWG libraries. DWG is the native file format of AutoCAD. GNU LibreDWG is based on LibDWG, originally written by Felipe Castro.
What is the 3MF Consortium The 3MF Consortium is an industry association formed to develop and promote a new full-fidelity file format for 3D printing/additive manufacturing, known as the 3D Manufacturing Format (3MF). This consortium came together to rectify the limitations of the existing file formats used in 3D printing, providing a standardized, more capable format that could handle the full range of additive manufacturing technologies from prototyping to production. What is .3mf ? The 3D
PanConvert is a multi-platform GUI for instrumenting Pandoc to convert between various text, file and markup formats. It allows selecting files, or ad-hoc conversion of entered/pasted markup. Pandoc needs to be installed, and handles MarkDown/CommonMark, LaTeX, OPML, ODT and EPUB formats.
Uriparser is a RFC-conformant URI/IRI parsing library. It's cross-platform, written in C and thus speedy, and provides full Unicode support, reference resolution and creation, recomposition, and syntax-based normalization.
The eXtensible Binary Universal Protocol (XBUP) project is an attempt to design unified general binary data communication protocol and file format. It is based on the unlimited unary-binary encoding and block-tree structure with strong-type system and automatic transformations. Implementation should provide open-source libraries, editor tools, catalog of types and processing framework.