29. Implementations¶

mzPeak is backed by seven independent, from-scratch implementations — not bindings to a single core. Building on the widely available Apache Parquet and Apache Arrow libraries keeps the on-disk structure language-independent, so each implementation reads and writes the same archives natively.

29.1 Rust — reference implementation¶

HUPO-PSI/mzPeak (mzpeak_prototyping) is the reference reader and writer. As the canonical implementation, it tracks the specification most closely and is the place to confirm intended behaviour when the prose is ambiguous.

29.2 Python¶

The python/ library in mzpeak_prototyping is a read-only library exposing mzPeak data as zero-copy Apache Arrow tables and Pandas DataFrames, so metadata and signal can be queried with the analytical tooling proteomics and metabolomics users already know.

29.3 R¶

The R/ library in mzpeak_prototyping is a read-only library offering dplyr-compatible access to the packed metadata and signal tables, developed in coordination with the R for Mass Spectrometry community. The current interface uses R6 classes; an S4 interface (for full Bioconductor ecosystem compatibility) is planned.

29.4 C#¶

HUPO-PSI/mzPeak.NET is a read/write implementation for the .NET ecosystem. It ships with a demonstration that reads vendor data through Thermo's RawFileReader and writes it to mzPeak.

29.5 Java¶

okohlbacher/mzPeakJ is a dependency-light, pure-JVM read/write demonstrator. It reads unpacked directories and single-file ZIP archives, writes point and Numpress layouts, covers spectra, chromatograms, and wavelength spectra, and is cross-validated against the Rust reference implementation. It is a proof-of-concept rather than a hardened production library.

29.6 JavaScript / TypeScript¶

A read-only implementation that runs in the browser, Node.js, and Deno, making mzPeak archives directly inspectable on the web. An online viewer demonstrates reading local and remote files — including extracted-ion chromatograms, base-peak chromatograms, and metadata inspection — entirely client-side.

29.7 C++¶

OpenMS/mzpeak is a native C++ library for the mzPeak format, currently read-only with a streaming writer interface planned. It is an early work in progress — the API is expected to stabilise over the course of 2026.