grow$$\lambda$$
A code to compute the growth factor and growth rate of structure in Universes containing matter and cosmological constant
 • Download the code growl.tgz (16K; version of 27 June 2000). • Hamilton A. J. S., 2001, MNRAS, 322, 419-425 (astro-ph/0006089)

 Growth factor $$g \equiv D/a$$ Growth rate $$f \equiv \textrm{d} \ln D / \textrm{d} \ln a$$