Recently added to the directory

mzCloud

mzcloud.org

mzCloud is a curated mass spectral database of high-resolution tandem mass spectra arranged into spectral trees. It supports spectrum, tree, structure, substructure, m/z, and compound name searches, and is intended to help identify compounds, including those not present in the library. The database includes annotated fragments, molecular formulas, identifiers, and experimental metadata. It is an open consortium effort covering fields such as metabolomics and toxicology.

MyRiceBase

myricebase.mardi.gov.my

MyRiceBase is a curated biological database that centralises genomics and transcriptomics information for rice quality traits, with a focus on amylose and antioxidants. It hosts single nucleotide polymorphisms (SNPs), genes and biological networks that users can search, browse or download. Search functionality supports queries based on SNP ID, gene ID and rice variety name. The platform also provides Tableau and Neo4j tools for data visualisation.

myExperiment

myexperiment.org

Browse research datasets and experimental data related to engineering.

MycoBank

mycobank.org

Dataset repository covering basic in biology and medicine, with searchable datasets.

Myanmar data portal

opendevelopmentmyanmar.net

Open data portal for searching and downloading public datasets.

MyGeoHub is a hub built on the HUBzero platform that supports geospatial modeling, data analysis and visualization for research and education communities. It hosts groups, datasets, tools, training materials and educational content, and offers a free account for accessing resources. It also allows groups to be hosted on the site.

Search a government or civic data catalog for reusable public information.

Mutant Mouse Resource & Research Centers

mmrrc.org

Browse research datasets and datasets related to basic in biology and medicine.

MUSE-Wide

musewide.aip.de

MUSE-Wide is a shallow MUSE survey in well-studied deep fields with extensive multiwavelength data, including GOODS-S/CDFS and CANDELS-COSMOS. It also serves as a data release page; release DR1 covers 44 fields in CDFS and includes links to reduced cubes, a cutout service and an emission line catalog.

Municipal Money, South Africa

municipalmoney.gov.za

Municipal Money is a web-based tool from South Africa's National Treasury that presents municipal financial data to the public. It draws on raw data from the Municipal Money API site and uses interactive maps, charts, graphs and short videos to show financial performance and allow comparisons between municipalities. Content is presented for general audiences without a financial background.

Municipal Data, South Africa

municipaldata.treasury.gov.za

Municipal Finance Data presents current and historical South African municipal budget and financial performance data from the National Treasury, covering financial years 2008-2009 to 2025-2026. It offers exploratory access to datasets, bulk data downloads, a JSON API, and the Municipal Money website.

The MultiDark Database provided results from cosmological simulations performed within the MultiDark project. It could be queried by entering SQL statements directly into a Query Form, and access to the public and private databases was password protected, requiring registration. The site notes that MultiDark has moved to CosmoSim, where its application is integrated, and the old server is no longer available.

Multi-Terminology Server

smt.esante.gouv.fr

French server for health-related terminologies.

Mullsjö Municipality Open Data portal

mullsjo.se

Open data portal for searching and downloading public datasets.

Find published open datasets through filters, categories and keyword search.

MPDS

mpds.io

MPDS (Materials Platform for Data Science) is an online materials database originating from the PAULING FILE project, containing over 3 million entries of physical properties, crystal structures, and phase diagrams for inorganic materials. It offers multiple access tiers: free open access with login includes search by over 15 criteria, analysis tools, interactive plots, and access to around 50k datasheets; paid full GUI access adds detailed visualizations, data export in over 5 formats, high-quality redrawn phase diagrams, and access to around 3 million datasheets with full references and DOIs; paid API full access provides machine-readable data, regular updates, documentation and support, and OPTIMADE standard support, and includes full GUI access.

Dataset repository covering cognitive, systems and behavioural neurobiology, with searchable datasets.

Mouse Phenome Database

phenome.jax.org

The Mouse Phenome Database is a resource for exploring physiology and behavior through genetics and genomics. It provides phenotypes, genotypes, strains, panels, QTL, studies and protocols, with search by strain, procedure, treatment, investigator, project, measure, PubMed number, ontology term, gene or genomic region.

Mouse Models of Human Cancer database

tumor.informatics.jax.org

The Mouse Models of Human Cancer Database (MMHCdb) is a curated resource of mouse models of human cancer. It covers spontaneous and induced mouse tumors, genetically defined models such as inbred, hybrid, mutant and genetically engineered strains, and patient-derived xenograft models. It is intended to help researchers choose experimental models and review mutation patterns in specific cancers.

Mouse Genome Informatics

informatics.jax.org

Mouse Genome Informatics is an international database resource for the laboratory mouse. It provides integrated genetic, genomic, and biological data to facilitate the study of human health and disease. The site offers search and analysis tools covering genes, phenotypes, alleles, human disease, gene expression, recombinase function, strains, SNPs, homology, and references.

Mountain Scholar

mountainscholar.org

Mountain Scholar is an open access repository service that collects, preserves, and provides access to digitized library collections and other scholarly and creative works from Colorado State University and the University Press of Colorado. It also serves as a dark archive for the Open Textbook Library.

Motus Wildlife Tracking System

motus.org

Motus is an international collaborative research network that uses automated radio telemetry to track the movement and behaviour of small animals such as birds, bats and insects. It is a program of Birds Canada run with collaborating researchers and organizations, and it provides data and information for researchers.

Searchable repository for finding anatomy and physiology datasets and datasets.

Most Wiedzy Open Research Data Catalog

mostwiedzy.pl

Browse research datasets and image related to engineering.