# Ecosystem¶

With ecosystem, we mean single-cell related tools that operate on AnnData. Here, we list some that do not have an interface in the external API.

## Viewers¶

Interactive manifold viewers.

## Fate mapping¶

• CellRank Helmholtz Munich

CellRank is a toolkit to uncover cellular dynamics based on scRNA-seq data with RNA velocity annotation by detecting initial and terminal populations, inferring fate potentials and uncovering gene expression trends towards specific terminal populations.