The Sirocco Animitap microRNA Target Prediction Aggregator website has been developed to allow the comparison of results from a number of microRNA target prediction tools, and/or the same algorithm in parallel with varying parameters to compare outputs. The Animitap system has been launched with the ability to run Miranda and RNAHybrid, with others to follow. These programs have been compiled from provided sources. Each algorithm is presented to the user in a basic mode for default options (to assist the novice user), or with a full set of command line features made available to the user. The users data is uploaded in FASTA format and then queued to run on the server. After each algorithm has run to completion the Animitap system sends an email to the user with a link where the user can download the results file with a copy of the program command line for archiving purposes and/or an error log if appropriate.