| CircuitsDB | Homo sapiens, Mus musculus. | http://biocluster.di.unito.it/... |
| dbSMR | Homo sapiens. | http://miracle.igib.res.in/pol... |
| doRiNA | Homo sapiens, Mus musculus, Drosophila melanogaster, Caenorhabditis elegans. | http://dorina.mdc-berlin.de |
| MeRNA | Unspecified. | http://merna.lbl.gov/ |
| microRNA.org | Homo sapiens, Rattus norvegicus, Canis familiaris, Mus musculus, Drosophila melanogaster, Caenorhabditis elegans. | http://www.microrna.org/ |
| miRGator | Homo sapiens. | http://mirgator.kobic.re.kr/ |
| miRWalk | Homo sapiens, Rattus norvegicus, Mus musculus. | http://www.ma.uni-heidelberg.d... |
| RepTar | Homo sapiens, Mus musculus, Human EBV virus, Human HCMV virus, Human KSHV virus, Mouse MCMV virus. | http://bioinformatics.ekmd.huj... |
| S-MED | Homo sapiens. | http://www.oncomir.umn.edu/SME... |
