Welcome to Loom, loompy, and the loom viewer!

Loom is a file format designed to store and work with single-cell RNA-seq data. Loom can also be used more generally for any type of omics data that is naturally represented as a matrix.

Key features:

To get started, head over to the docs

Source code is available at GitHub for loompy and loom-viewer.

Other implementations

LoomR from Rahul Satija’s lab implements loom for R

scanpy from Fabian Theis lab reads and writes loom files directly.