Data processing and interpretation represent the 
most challenging and time-consuming steps in high-throughput metabolomic
 experiments, regardless of the analytical platform (mass spectrometry 
[MS] or nuclear magnetic resonance spectroscopy [NMR]-based) used for 
data acquisition. Improved machinery in metabolomics generate 
increasingly complex data sets which create the need for more and better
 processing and analysis software and in-silico approaches to 
understand the resulting data. However, a comprehensive source of 
information describing the utility of the most recently developed and 
released metabolomics resources – in the form of tools, software, and 
databases - is currently lacking. Thus, here we provide an overview of 
freely-available, open-source, tools, algorithms and frameworks to make 
both upcoming and established metabolomics researchers aware of the 
recent developments in an attempt to advance and facilitate data 
processing workflows in their metabolomics research. The major topics 
include tools and researches for data processing, data annotation, and 
data visualization in MS and NMR based metabolomics. Most in this review
 described tools are dedicated to untargeted metabolomics workflows; 
however, some more specialist tools are described as well. All tools and
 resources described including their analytical and computational 
platform dependencies are summarized in an overview Table.http://onlinelibrary.wiley.com/doi/10.1002/elps.201500417/abstract
 
