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PDBj, the Protein Data Bank Japan, maintains the global PDB/BMRB/EMDB archives of macromolecular structures. Its website provides integrated tools for searching and analyzing PDB data, along with data deposition, standard format downloads, molecular viewers, derived databases and an educational service. PDBj is a member of the Worldwide PDB.
PeptideAtlas is a multi-organism, publicly accessible compendium of peptides identified in tandem mass spectrometry proteomics experiments. Each atlas build is made by searching spectra against sequence databases or spectral libraries, assigning probabilities to peptide-spectrum matches and selecting matches that pass a threshold. Builds are named for a species or subproteome, such as Human Plasma, and the search function covers only default builds.
Phenol-Explorer is a database on polyphenol content in foods with over 35,000 content values for 500 polyphenols in more than 400 foods. It also includes data on polyphenol metabolism and the effects of food processing, and allows simple and advanced queries.
PhotoQt is an open-source image viewer built on Qt/QML, described as simple yet powerful and highly configurable. It supports more than 140 image formats, touchscreen gestures, 360-degree panoramas, color profiles, barcode detection, basic per-session image manipulation, format conversion, slideshows and Exif/IPTC/XMP metadata display. A command line interface offers remote control of the application.
The page provides physical mapping data downloads from Canada's Michael Smith Genome Sciences Centre, including an FPC database of BAC fingerprint data for species such as Atlantic Salmon, mouse, rat and bovine. It lists FPC and plain text files, and the FPC software is available from the University of Arizona.
PiroplasmaDB is a resource within VEuPathDB, which provides FAIR access to genomic data for eukaryotic microbes (protists and fungi), hosts, and arthropod vectors of pathogenic species. VEuPathDB is working to secure the long-term financial sustainability of its globally relied-upon biomedical data resources.
Pitch is a collaborative presentation platform for teams to create, share and deliver presentations. Slides can be created from a prompt, and the Free plan offers 100 AI credits, unlimited presentations, custom templates, basic sharing links and two external guests.
The Plant Organelles Database 3 (PODB3) is a specialized database project on organelle dynamics, function, biogenesis, differentiation, movement and interactions. It consists of six parts, including an Electron Micrograph Database, a Perceptive Organelles Database, an Organelles Movie Database, an Organellome Database, a Functional Analysis Database and external links. Data and protocols come from submissions by plant researchers. Data are free only to non-profit institutions, universities and colleges.
PlantTFDB is a plant transcription factor database, described as a portal for the functional and evolutionary study of plant transcription factors, at version PlantTFDB v5.0. The site offers browsing by species and by family, a BLAST search, a TF prediction server, downloads and help pages.
PlasmoDB is a component of VEuPathDB, which provides FAIR (Findable, Accessible, Interoperable, Reusable) access to genomic data for eukaryotic microbes, including protists and fungi, as well as their hosts and arthropod vectors of pathogenic species. VEuPathDB works to ensure the long-term financial sustainability of these globally used biomedical data resources.
PLText is a free AI-powered plagiarism checker, detector, and remover. It scans text against billions of web pages, academic resources, and journals to identify exact, partial, and weak matches. Users receive detailed reports with source links and an originality score. A one-click rewrite function can modify flagged content. The service offers a free tier with up to 1000 words per search without login. Paid subscription plans include Basic at $7.93 per month (annual), Pro at $15.68 per month, and Pro+ at $30.04 per month, as well as pay-as-you-go options.
Portfolio Visualizer provides online portfolio analysis tools, including backtesting, Monte Carlo simulation, tactical asset allocation, optimization and factor analysis. It offers a free tier for personal and educational use, with paid Basic and Pro subscriptions billed annually.
The Primate Cell Type Database provides ex vivo data from non-human primate cells sampled from the lateral prefrontal cortex. It includes intracellular patch clamp recordings for two protocols, a 1 second current pulse and a 3 millisecond pulse, and morphology obtained by biocytin injections and confocal imaging at 63x magnification.
Progress is a small C command that looks for coreutils basic commands such as cp, mv, dd, tar, gzip and cat running on the system and displays the percentage of copied data. It can also show estimated time and throughput and provides a top-like monitoring mode. It works on Linux, FreeBSD and macOS.
PseudoBase is a collection of RNA pseudoknots made available for retrieval to the scientific community. It offers retrieval by class or by summary, and a section for submitting new pseudoknots. The page serves as the main introduction to the retrieval, submit and information sections.
PSnpBind is a database of proteins from the PDB, covering 26 proteins, focused on the effect of pocket SNPs on protein-ligand binding affinity. It was developed by Ammar Ammar and its data is licensed under CC-BY v4.0.
puddletag is an audio tag editor primarily created for GNU/Linux, similar to the Windows program Mp3tag. It uses a spreadsheet-like layout so tags can be edited by hand and visible. It supports extracting tag information from filenames, renaming files based on tags with patterns, and basic tag editing. Functions include text replacement, trimming and case conversion, and Actions automate repetitive tasks. Web lookups using Amazon, Discogs, FreeDB and MusicBrainz are supported.
The repository holds materials and IPython notebooks for "Python for Data Analysis, 3rd Edition" by Wes McKinney, published by O'Reilly Media. Notebooks cover chapters on Python basics, NumPy, pandas, data loading, cleaning, visualization, time series and modeling libraries, plus appendices. The code is released under the MIT license.
A hands-on, project-based introduction to programming with Python by Eric Matthes, published in its third edition in December 2022. The book covers basic concepts such as variables, lists, classes, and loops, and guides readers through projects including a Space Invaders-inspired arcade game, data visualizations, and a simple web application.
PythonAnywhere is a cloud service for hosting, running and coding Python. The basic plan provides access to machines with a full Python environment already installed, and quickstart installers are available for Django, web2py, Flask and Bottle.
QPaths is a tool for building visual intuition for basic quantum terms. It offers superposition paths including Bell state, GHZ state, and QFT, and directs users to BlueQubit to simulate quantum circuits.
Rambox is a desktop workspace that organizes work apps, accounts and workflows in one place. It offers customizable workspaces, session management, multi-login for multiple accounts of the same app, a tile view and more than 700 ready-to-use apps, plus custom web apps. A focus mode pauses notifications. Plans are Basic, Pro and Teams; new accounts start with a 30-day Pro trial.
RCPlanes Online is a site about radio-controlled model aircraft. It offers a basic aerodynamics guide, a beginners' guide and useful information about RC planes. It also provides calculators for center of gravity, wing loading, motor and propeller combinations, propeller static thrust, and plane performance.
The RCSB Protein Data Bank is a member of the Worldwide PDB partnership that curates and annotates PDB data. It provides tools for searching, visualizing, and analyzing 3D structural data, including sequence and structure similarity searches. Users can browse annotations, download and analyze molecules.
