| 2P2Idb - The Protein-Protein Interaction Inhibition Database | Details | Free | |
| 3D-Interologs - 3D-Interologs | Details | Free | |
| 3DID - 3D interacting domains | Details | Free | |
| ACSN - Atlas of Cancer Signalling Network | Details | Free | | | |  | BioPAX |  | | | |
|
| ADAN - Prediction of protein-protein interaction of modular domains | Details |  | |
| AHD2.0 - Arabidopsis Hormone Database 2.0 | Details | Free | |
| AllFuse - Functional Associations of Proteins in Complete Genomes | Details |  | |
| aMAZE - Protein Function and Biochemical Pathways Project | Details |  | |
| ANAP - Arabidopsis Network Analysis Pipeline | Details | Free | |
| ANIA - ANnotation and Integrated Analysis of the 14-3-3 interactome | Details | Free | |
| AnimalTFDB - Animal Transcription Factor Database | Details | Free | |
| AntiJen - AntiJen a Kinetic, Thermodynamic and Cellular Database | Details | Free | |
| APID - Agile Protein Interactomes DataServer | Details | Free | | | |  | PSI-MI |  | | | |
|
| Araport - Arabidopsis Information Portal | Details | Free | |
| ARN - The Autophagy Regulatory Network | Details |  | | | |  | PSI-MI |  | | | |
| | |  | BioPAX |  | | | |
| | |  | SBML |  | | | |
|
| AS-ALPS - Alternative Splicing - induced ALteration of Protein Structure | Details | Free | |
| ASD - Allosteric Database | Details | Free | |
| ASEdb - Alanine Scanning Energetics Database | Details | Free | |
| ASPD - Artificial Selected Proteins/Peptides Database | Details | Free | |
| ATDB - Animal Toxin Database | Details | Free | |
| AtPID - Arabidopsis thaliana Protein Interactome Database | Details | Free | |
| AtPIN - Arabidopsis thaliana Protein Interactome Network | Details | Free | |
| Bacteriome.org - Bacterial Protein Interaction Database for Escherichia Coli | Details | Free | |
| BIANA - Biologic Interaction and Network Analysis | Details | Free | |
| BID - Binding Interface Database | Details |  | |
| BIND - Biomolecular Interaction Network Database | Details |  | | | |  | PSI-MI |  | | | |
|
| BioGRID - Biological General Repository for Interaction Datasets | Details | Free | | | |  | PSI-MI |  | | | |
|
| BiologicalNetworks - BiologicalNetworks | Details |  | |
| BioPlex - Biophysical Interactions of ORFeome-based Complexes | Details | Free | |
| Biozon - Biozon | Details | Free | |
| BISC - BInary SubComplex Database | Details | Free | |
| BRITE - Functional Hierarchies and Binary Relationships of Biological Entities | Details | Free | |
| CA1Neuron - Pathways of the hippocampal CA1 neuron | Details |  | |
| CADgene - Coronary Artery Disease Gene Database | Details | Free | |
| Cancer Cell Map - The Cancer Cell Map | Details |  | | | |  | BioPAX |  | | | |
|
| CancerNet - | Details | Free | |
| canEvolve - | Details | Free | |
| CCSB Interactome Database - Center for Cancer Systems Biology Interactome Database | Details | Free | | | |  | PSI-MI |  | | | |
|
| CellCircuits - CellCircuits | Details | Free | |
| CHD@ZJU - Coronary Heart Disease @ZJU Database | Details | Free | |
| ChemProt - ChemProt | Details | Free | |
| CIDeR - | Details | Free | | | |  | SBML |  | | | |
|
| CMAP - Complement Map Database | Details | Free | |
| Colorectal Cancer Atlas - | Details | Free | |
| comPPI - Compartmentalized Protein-Protein Interaction Database | Details |  | |
| ComSim - Database of protein structures in bound (Complex) and unbound (Single) states | Details | Free | |
| CORNET - CORrelation NETworks | Details | Free | |
| CORUM - Comprehensive resource of mammalian protein complexes | Details | Free | | | |  | PSI-MI |  | | | |
|
| COXPRESdb - Coexpressed Gene Database | Details | Free | |
| CPDB - ConsensusPathDB | Details |  | | | |  | PSI-MI |  | | | |
|
| CSP - Cytokine Signaling Pathway Database | Details |  | |
| CTDB - Calmodulin Target Database | Details | Free | |
| CutDB - CutDB: Proteolytic Event Database | Details | Free | |
| Cyclonet - Cyclonet | Details | Free | |
| DAnCER - Disease Annotated Chromatin Epigenetics Resource | Details | Free | |
| DAPID - Domain Annotated Protein-protein Interaction Database | Details |  | |
| DASMI - Distributed Annotation System for Molecular Interactions | Details | Free | |
| dbSNO - database of Cysteine S-NitrOsylation | Details | Free | |
| DDIB - Database of Domain Interactions and Bindings | Details |  | |
| DeathDomain - Death Domain Database | Details | Free | |
| DEPOD - the human DEPhOsphorylation Database | Details | Free | | | |  | PSI-MI |  | | | |
|
| DGA - Disease and Gene Annotations | Details | Free | |
| DIMA - Domain Interaction Map | Details | Free | |
| DIP - Database of Interacting Proteins | Details |  | | | |  | PSI-MI |  | | | |
|
| DIPOS - Database of Interacting Proteins in Oryza Sativa | Details | Free | |
| DOMINE - Database of Protein Domain Interactions | Details | Free | |
| DOMINO - Domain Peptide Interactions Database | Details |  | |
| DOMMINO - Database of MacroMolecular Interactions | Details | Free | |
| Doodle - Database of oligomerization domains from lambda experiments | Details |  | |
| DopaNet - DopaNet | Details |  | |
| Dr. PIAS - Druggable Protein-protein Interaction Assessment System | Details |  | |
| DRC - Database of Ribosomal Crosslinks | Details |  | |
| DroID - The Drosophila Interactions Database | Details | Free | |
| DroPNet - Drosophila Protein Network | Details | Free | |
| DSM - Dynamic Signaling Maps | Details |  | |
| E3Net - | Details | Free | |
| EciD - E. coli Interaction Database | Details |  | |
| FIMM - Functional Molecular Immunology | Details |  | |
| FLIGHT - FLIGHT | Details |  | |
| FLOR-ID - FLOweRing Interactive Database | Details | Free | |
| Fly-DPI - Drosophila melanogaster Database of Protein Interactomes | Details | Free | |
| FlyBase - FlyBase: a database of Drosophila Genes & Genomes | Details | Free | |
| FlyMine - FlyMine | Details | Free | |
| FlyNets - FlyNets | Details |  | |
| FlyOde - | Details | Free | |
| FPPI - Fussarium graminearum Protein-Protein Interaction Database | Details | Free | |
| FunCoup - Networks of Functional Coupling | Details | Free | |
| FusionDB - Prokaryote Gene Fusion Events | Details |  | |
| GenAge - GenAge: The Ageing Gene Database | Details | Free | |
| Gene3D - Gene3D | Details | Free | |
| GeneMANIA - GeneMANIA | Details | Free | |
| GermOnline - GermOnline | Details | Free | |
| GO - Gene Ontology Consortium | Details | Free | |
| GPCR-PD - G protein-coupled receptors protein database | Details |  | |
| gpDB - A Database of G-Proteins and their Interaction with GPCRs | Details | Free | |
| GraP - Platform of Functional Genomics Analysis in Gossypium raimondii | Details | Free | |
| GroEL PPI - Proteins that interact with GroEL and factors that affect their release | Details |  | |
| GWIDD - Genome-WIde protein Docking Database | Details | Free | |
| H-InvDB - H-InvDB: Annotated Human Gene Database | Details | Free | |
| HAPPI - Human Annotated and Predicted Protein Interactions Database | Details | Free | | | |  | PSI-MI |  | | | |
|
| HCPIN - Human Cancer Protein Interaction Network | Details | Free | |
| HCVpro - Hepatitus C Virus Protein Interaction Database | Details |  | |
| HDBase - Huntington's Disease Base | Details |  | |
| HDNetDB - Huntington's Disease Network DataBase | Details | Free | |
| HDR - Homeodomain Resource Database | Details | Free | |
| HiMAP - Human Interactome Map | Details |  | |
| HINT - High-quality Interactomes | Details | Free | |
| HINT-KB - Human INTeractome Knowledge Base | Details | Free | |
| HIPPIE - Human Integrated Protein-Protein Interaction rEference | Details | Free | | | |  | PSI-MI |  | | | |
|
| HitPredict - HitPredict | Details | Free | | | |  | PSI-MI |  | | | |
|
| HIV-1 at NCBI - HIV-1, Human Protein Interaction Database at NCBI | Details | Free | |
| HIVMID - HIV Molecular Immunology Database | Details | Free | |
| HomoMINT - Human Molecular Interaction Database | Details |  | | | |  | PSI-MI |  | | | |
|
| HotRegion - A Database of Cooperative Hotspots | Details | Free | |
| HotSprint - Database of Computational Hot Spots of Protein Interfaces | Details | Free | |
| HP-DPI - Helicobacter pylori Database of Protein Interactomes | Details | Free | |
| HPID - Human Protein Interaction Database | Details | Free | |
| HPIDB - Host-Pathogen Interaction Database | Details | Free | | | |  | PSI-MI |  | | | |
|
| HPRD - Human Protein Reference Database | Details |  | | | |  | PSI-MI |  | | | |
|
| HRGRN - HRGRN | Details | Free | |
| HSV1 PPI - Protein-Protein Interactions Table for Human herpesvirus 1 | Details |  | |
| HTRIdb - Human Transcriptional Regulation Interaction Database | Details | Free | |
| Human Proteinpedia - Human Proteinpedia | Details | Free | |
| Human-gpDB - A database of human GPCRs, G-proteins, Effectors and their interactions | Details | Free | |
| HumanMine - | Details | Free | |
| HumanPSD - Human Proteome Survey Database | Details |  | |
| HuPI - database of the Human Proteotheque Initiative | Details |  | |
| HuRI - The Human Reference Protein Interactome Mapping Project | Details |  | |
| I2D - Interologous Interaction Database | Details |  | | | |  | PSI-MI |  | | | |
|
| IBIS - Inferred Biomolecular Interactions Server | Details | Free | |
| ICBS - Inter-Chain Beta-Sheets | Details | Free | |
| IDEAL - Intrinsically Disordered proteins with Extensive Annotations and Literature | Details | Free | |
| IID - Integrated Interactions Database | Details |  | |
| IIIDB - Isoform-Isoform Interaction Database | Details | Free | |
| IMEx - The International Molecular Exchange Consortium | Details | Free | | | |  | PSI-MI |  | | | |
|
| IMID - Integrated Molecular Interaction Database | Details | Free | |
| iMOTdb - Interacting motifs in proteins database | Details | Free | |
| InnateDB - A Knowledge Resource for Innate Immunity Interactions and Pathways | Details | Free | | | |  | PSI-MI |  | | | |
|
| INstruct - a database of 3D protein interactome networks with structural resolution | Details | Free | |
| IntAct - IntAct Molecular Interaction Database | Details | Free | | | |  | PSI-MI |  | | | |
|
| INTERACT - INTERACT Protein-protein interaction database | Details |  | |
| Interactome - Krogan Lab Interactome Database | Details | Free | |
| InterDom - Database of Interacting Domains | Details |  | |
| InterEvol - InterEvol | Details | Free | |
| Interfaces - DATASET OF PROTEIN-PROTEIN INTERFACES | Details | Free | |
| InterMitoBase - InterMitoBase | Details | Free | |
| Interolog - Interolog/Regulog Database | Details | Free | |
| InteroPorc - Automatic molecular interaction predictions | Details | Free | | | |  | PSI-MI |  | | | |
|
| InterPare - The Protein Interfaceome Database | Details |  | |
| InterPreTS - Interaction Prediction through Tertiary Structure | Details |  | |
| IntNetDB - Integrated Protein Interaction Network Database | Details |  | |
| IntPath - Integrated Pathway Gene Relationship Database | Details |  | |
| iPfam - Protein families database of alignments and HMMs | Details | Free | |
| iPPI-DB - Inhibitors of Protein-Protein Interaction Database | Details | Free | |
| iProClass - iProClass | Details | Free | |
| iRefIndex - Interaction Reference Index | Details | Free | | | |  | PSI-MI |  | | | |
|
| iRefWeb - Interaction Reference Index Web Interface | Details | Free | | | |  | PSI-MI |  | | | |
|
| IRView - IRView | Details | Free | | | |  | PSI-MI |  | | | |
|
| JAIL - JAIL | Details | Free | |
| JET2 Viewer - | Details | Free | |
| KBDOCK - A Resource for Knowledge-Based Protein Docking | Details | Free | |
| KDBI - Kinetic Data of Bio-molecular Interactions database | Details |  | |
| KIDFamMap - Kinase-Inhibitor-Disease Family Map | Details | Free | |
| KinaseDB - Kinase Pathway Database | Details |  | |
| KUPS - The University of Kansas Proteomics Service | Details | Free | |
| LMPID - Linear Motif mediated Protein-Protein Interaction Database | Details | Free | |
| MatrixDB - Extracellular Matrix Interactions Database | Details | Free | | | |  | PSI-MI |  | | | |
|
| MetaCore - MetaCore pathway database | Details |  | | | |  | BioPAX |  | | | |
| | |  | SBML |  | | | |
|
| MHCPEP - Database of MHC binding peptides | Details |  | |
| MiasDB - | Details | Free | |
| MiMI - Michigan Molecular Interactions | Details |  | | | |  | PSI-MI |  | | | |
|
| MINT - Molecular Interaction Database | Details | Free | | | |  | PSI-MI |  | | | |
|
| MIPS CYGD - MIPS Comprehensive Yeast Genome Database | Details | Free | | | |  | PSI-MI |  | | | |
|
| MIPS MPact - Protein Interaction and Complex Database | Details |  | | | |  | PSI-MI |  | | | |
|
| MIPS-MPPI - MIPS Mammalian Protein-Protein Interaction Database | Details | Free | | | |  | PSI-MI |  | | | |
|
| miRIAD - intragenic microRNA database | Details |  | |
| MiST2 - Microbial Signal Transduction Database | Details | Free | |
| MitoInteractome - Mitochondrial Protein Interactome Database | Details |  | | | |  | PSI-MI |  | | | |
|
| MitoP2 - Mitochondrial Proteome | Details |  | |
| MMDB - Molecular Modeling Database | Details | Free | |
| MnM - Minimotif Miner | Details | Free | |
| MobiDB - a database of protein disorder and mobility annotations | Details | Free | |
| ModBase - ModBase | Details | Free | |
| MPI-LIT - The Microbial Protein Interaction Database | Details |  | |
| MPID - Magnaporthe grisea Protein-protein Interaction Database | Details |  | |
| MPID-T - MHC-Peptide Interaction Database | Details | Free | |
| MPID-T2 - MHC-Peptide Interaction Database-TR | Details | Free | |
| MPIDB - Microbial Protein Interaction Database | Details | Free | |
| MppDB - Mouse Protein-Protein Interaction Database | Details |  | |
| MYCbase - A Database of MYC | Details |  | |
| MycoPathPD - Human Fungal Pathogens Proteome Database | Details |  | |
| NCG - Network of Cancer Genes | Details | Free | |
| NCPI - Neurospora Crassa Protein Interactome Database | Details | Free | |
| Negatome - The Negatome Database | Details | Free | |
| NetPro - Molecular Connections Database of Protein Interactions | Details |  | |
| NetworKIN - NetworKIN | Details | Free | |
| NeXO - The Network Extracted Ontology | Details | Free | |
| NRF2ome - Integrated regulatory network of Nuclear Factor (erythroid-derived 2)-like 2 (NRF2) | Details | Free | | | |  | PSI-MI |  | | | |
| | |  | BioPAX |  | | | |
| | |  | SBML |  | | | |
|
| NURSA - Nuclear Receptor Signaling Atlas | Details | Free | |
| ooTFD - Object Oriented Transcription Factors Database | Details |  | |
| PAGED - Pathway and Gene Enrichment Database | Details | Free | |
| PAIR - The Predicted Arabidopsis Interactome Resource | Details | Free | | | |  | PSI-MI |  | | | |
|
| Pathcalling - Curagen Pathcalling | Details |  | |
| PathCards - Pathway Unification Database | Details | Free | |
| PathDB - Pathways Database | Details |  | |
| Pathway Studio - Pathway Studio | Details |  | |
| Pathways Knowledge Base - Ingenuity Pathways Knowledge Base | Details |  | |
| PATRIC - PathoSystems Resource Integration Center | Details | Free | |
| PC - Pathway Commons | Details | Free | | | |  | PSI-MI |  | | | |
| | |  | BioPAX |  | | | |
|
| PCDB - Protein Conformational Database | Details |  | |
| PCPPI - Penicillium-Crop Protein-Protein Interactions database | Details |  | |
| PCRPi-DB - Presaging Critical Residues in Protein interfaces-DataBase | Details | Free | |
| PDBeMotif - Protein Data Bank in Europe, Motifs and Sites | Details | Free | |
| PDBsum - PDBsum: pictorial database of 3D structures in the Protein Data Bank | Details | Free | |
| PDZBase - PDZ domain protein-protein interaction database | Details | Free | |
| PepBank - PepBank Peptide Database | Details | Free | |
| PepCyber - PepCyber: P~Pep | Details | Free | | | |  | PSI-MI |  | | | |
|
| PeroxisomeDB - Peroxisome Database | Details | Free | |
| Phospho.ELM - Post-translational phosphorylation database | Details | Free | |
| PhosphoBase - Database of phosphorylation sites | Details | Free | |
| PhosphoGRID - PhosphoGRID | Details | Free | |
| PhosphoNetworks - PhosphoNetworks | Details |  | |
| PhosphoPOINT - PhosphoPOINT | Details |  | |
| PhosphoSite - Cell Signaling Technology's PhosphoSite Database | Details |  | | | |  | BioPAX |  | | | |
|
| PI2PE - Protein Interface/Interior Prediction Engine | Details | Free | |
| PIBASE - PIBASE | Details | Free | |
| PICCOLO - PICCOLO | Details | Free | |
| Pickle - Protein InteraCtion KnowLedgebasE | Details | Free | |
| PIG - Host Pathogen Interactions | Details |  | |
| Pigment Cell Gene Resource - Pigment Cell Gene Resource | Details | Free | |
| PIMADb - Database of Protein-Protein Interactions in Macromolecular Assemblies | Details | Free | |
| PIMRider - Protein Interaction Map - Hybrigenics | Details |  | | | |  | PSI-MI |  | | | |
|
| PINA - Protein Interaction Network Analysis | Details | Free | |
| PINdb - Proteins Interacting in the Nucleus database | Details |  | |
| PINT - Protein-protein Interactions Thermodynamic Database | Details | Free | |
| PIPs - Human Protein-Protein Interaction Prediction | Details | Free | |
| PiSITE - Database of Protein Interaction SITEs | Details | Free | |
| PlantPAN - Plant Promoter Analysis Navigator | Details |  | |
| POINT - Prediction of Interactome | Details |  | |
| PombePD - Schizosaccharomyces pombe Proteome Database | Details |  | |
| PPID - Protein-Protein Interaction Database | Details |  | |
| PPIRA - Protein-Protein Interactions between Ralstonia solanacearum and Arabidopsis thaliana | Details | Free | |
| PPISearch - Protein-Protein Interaction Search | Details | Free | |
| PPIV (FANTOM) - RIKEN FANTOM Protein Protein Interaction Viewer | Details |  | |
| PQS - Protein Quaternary Structure database | Details | Free | |
| Predictome - Predictome | Details | Free | |
| prePPI - prePPI | Details | Free | |
| PRIME - Protein interaction and molecular information database | Details |  | |
| PRIMOS - Protein Interaction and Molecule Search database | Details |  | |
| PRIN - Predicted Rice Interactome Database | Details | Free | |
| PRISM - Protein Interactions by Structural Matching | Details | Free | |
| ProChart - ProChart database of signal transduction pathway information | Details |  | |
| PROFESS - Protein Function, Evolution, Structure and Sequence Database | Details | Free | |
| Prolinks - Prolinks | Details | Free | |
| ProMesh - ProMesh Protein-Protein Interaction Database | Details |  | |
| PROMISCUOUS - PROMISCUOUS | Details | Free | |
| ProNet - Protein-protein Interaction Database | Details |  | |
| ProtCID - PROTein Common Interfaces Database | Details | Free | |
| PROTCOM - Database of Protein Complexes | Details |  | |
| Protein Lounge - Protein Lounge | Details |  | |
| Proteome - | Details |  | |
| PSIbase - Protein Structural Interactome Database | Details |  | |
| PSICQUIC - Proteomics Standards Initiative Common QUery InterfaCe | Details | Free | | | |  | PSI-MI |  | | | |
|
| pSTIING - Protein, Signalling, Transcriptional Interactions & Inflammation Networks Gateway | Details |  | |
| PTIR - Predicted Tomato Interactome Resource | Details | Free | |
| PTMcode - PTMcode 2 | Details | Free | |
| PubAngioGen - Public AngioGenesis research portal | Details | Free | |
| PubGene - PubGene | Details | Free | |
| PutidaNET - PutidaNET | Details |  | |
| RAPID - Resource of Asian Primary Immunodeficiency Diseases | Details | Free | |
| RegPhos - Regulatory Network in Protein Phosphorylation | Details | Free | |
| RGD - Rat Genome Database pathway resource | Details | Free | |
| RiceGeneThresher - RiceGeneThresher: bioinformatics tool site for rice genes discovery | Details | Free | |
| RKD - Rice Kinase Database | Details | Free | |
| S/MARt_DB - The S/MAR transaction DataBase | Details |  | |
| Scansite - Scansite | Details | Free | |
| SCOPPI - Structural classification of protein-protein interfaces | Details | Free | |
| SCOWLP - structural classification of protein binding reasons for atomic comparative analysis of protein interactions | Details | Free | |
| SGD Pathway Tools - Saccharomyces Genome Database Pathway Tools | Details | Free | | | |  | BioPAX |  | | | |
|
| Signaling Gateway - UCSD-Nature Signaling Gateway Molecule Pages | Details | Free | | | |  | BioPAX |  | | | |
| | |  | SBML |  | | | |
|
| SignaLink 2 - SignaLink 2: a multi-layered signaling pathway resource | Details |  | | | |  | PSI-MI |  | | | |
| | |  | BioPAX |  | | | |
| | |  | SBML |  | | | |
|
| SIGNOR - The SIGnaling Network Open Resource | Details | Free | | | |  | SBML |  | | | |
|
| Snap - a Single Nucleotide Polymorphism Annotation Platform | Details |  | |
| SNAPPI-DB - Structures, iNterfaces and Alignments for Protein-Protein Interactions | Details | Free | |
| SPiD - Subtilis Protein interaction Database | Details |  | |
| SPIDer - Saccharomyces Protein-protein Interaction Database | Details | Free | |
| SPIN-PP - Surface Properties of Interfaces - Protein-Protein Interfaces | Details |  | |
| SpliceAid-F - A Database of Human Splicing Factors and their Binding Sites | Details | Free | |
| Spliceosome Database - | Details | Free | |
| SPPS - Sequence-based Protein Partner Search | Details | Free | |
| STRING - Search Tool for the Retrieval of Interacting Genes/Proteins | Details |  | |
| Struct2Net - Structure-based Computational Predictions of Protein-Protein Interactions | Details | Free | |
| SUBA4 - The SUBcellular localization database for Arabidopsis proteins | Details | Free | |
| SuperTarget - SuperTarget | Details | Free | |
| SYFPEITHI - Database of MHC Ligands and Peptide Motifs | Details |  | |
| SYNDB - Synapse Database | Details | Free | |
| SynechoNET - SynechoNet: Integrated Protein-Protein Interaction Database of Synechocystis sp. PCC 6803 | Details |  | |
| SynSysNet - Synaptic Proteins Database | Details | Free | |
| T2D-Db - T2D-Db: An Integrated Data Resource on Type 2 Diabetes | Details |  | |
| Tabloid Proteome - Tabloid Proteome | Details | Free | |
| TeloPIN - Telomeric Proteins Interaction Network | Details | Free | |
| TissueNet - The Database of Human Tissue Protein-Protein Interactions | Details | Free | |
| TRIP - Mammalian Transient Receptor Potential Channel-Interacting Protein | Details | Free | |
| UbiNet - a web resource for exploring Ubiquitination Networks | Details | Free | |
| Ulysses - Projection of Protein Networks across Species | Details |  | |
| UniHI - Unified Human Interactome | Details | Free | |
| ValidNESs - Validated NES-containing proteins, functional NES sites and NES predictions | Details | Free | |
| VHLdb - a database of pVHL interactions and mutations | Details | Free | |
| VirHostNet - Virus-Host Network | Details | Free | | | |  | PSI-MI |  | | | |
|
| Virus Mentha - The Viral Interactomes Browser | Details | Free | |
| VirusMINT - VirusMINT | Details |  | | | |  | PSI-MI |  | | | |
|
| Wiki-Pi - Wiki-Pi: a wiki resource centred on human protein-protein interactions | Details | Free | |
| WormBase - Worm Base | Details | Free | |
| WormPD - Caenorhabditis elegans Proteome Database | Details |  | |
| XooNET - Integrated Protein-Protein Interaction database of Xanthomonas oryzae pathovar oryzae KACC1031 | Details |  | |
| yApoptosis - yeast apoptosis database | Details | Free | | | |  | SBML |  | | | |
|
| Yeast KID - Yeast Kinase Interaction Database | Details | Free | |
| yeastnet - A Consensus Reconstruction of Yeast Metabolism | Details | Free | | | |  | SBML |  | | | |
|
| YPA - Yeast Promoter Atlas | Details | Free | |
| YPD - Yeast Proteome Database | Details |  | |