The Best APID Alternatives in 2026

VirHostNet integrates and curates virus-host protein interaction data for reproducible systems-level analysis and visualization.

Search BioGRID's online repository of protein, chemical, and genetic interaction data.

The Human Protein Atlas organizes protein information across tissues, brain, cells, blood, disease, structure, and interaction resources.

The Integrated Interactions Database lets users search interaction data by gene or protein identifiers and organism.

Wiki-Pi supports searching human protein interactions and browsing disease-related interaction networks.

PSnpBind catalogs protein variants and their effects on protein-ligand binding affinity.

Stanford’s Coronavirus Antiviral and Resistance Database records published data on SARS-CoV-2 variant susceptibility and spike mutations.

TheCellVision presents studies and datasets on cell compartment morphology, protein localization, and image-based annotation.

Pathway Commons provides access to data integrated from public pathway and molecular interaction databases.

THEMIS shares mission data, software, publications, and research on the history of events and macroscale interactions during substorms.

PHI-base curates molecular and biological information on genes affecting pathogen-host interactions and some anti-infective targets.

NASA’s Infrared Science Archive curates science products from infrared and submillimeter missions, with catalog and contributed dataset search.

OpenDataPhilly catalogs open datasets from Philadelphia and regional organizations.

The Canadian Coast Guard catalog lets users search 41 navigation-related datasets and resources.

Hradec Králové's open data catalog covers municipal and company records, with datasets grouped into topics such as government, education, and transport.

Ostrava’s open data catalog organizes datasets across topics such as transport, culture, population, public services, and the environment.

DataNormandie is a regional open data exchange platform with a catalog and resources for learning how to use its datasets.

Prague’s local open data catalog lets visitors browse and download datasets using the DCAT-AP-CZ standard.

Venice’s open data catalog organizes city datasets by themes including culture, mobility, population, economy, and the environment.

TheCellMap provides interactive views of genetic interaction networks in budding yeast and human haploid cells.

The Oral Cancer Gene Database provides gene lists, keyword search, and interaction network information for head and neck cancer research.

CAIDA’s resource catalog organizes datasets and research resources about internet infrastructure.

Angers Loire Métropole provides an open-data catalog for public datasets from the French metropolitan area.

Slovakia’s national open data catalog provides access to the country’s open datasets.