Downloading rNMR 1.1 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The program belongs to Education Tools. The most popular versions among the software users are 1.1 and 1.0. This free software is a product of NMRFAM. We recommend checking the downloaded files with any free antivirus.
From the developer:
rNMR is an open source software package for visualizing and interpreting one and two dimensional NMR data. In contrast to most existing 2D NMR software, rNMR is specifically designed for high-throughput assignment and quantification of small molecules.
As a result, rNMR supports extensive batch manipulation of plotting parameters and has numerous tools for expediting repetitive resonance assignment and quantification tasks.
You may want to check out more software, such as Maxima and Minima, IUCLID5 or ECoord, which might be related to rNMR.