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pdfgrep is a free command-line tool that searches for patterns in PDF files and prints matching lines. It aims to be mostly compatible with GNU grep, supporting options such as -r, -i, -n, and -c, with extended regular expressions by default and page rather than line numbering for -n.
PDFiles is a site for downloading PDF ebooks, described as offering many electronic books in Arabic and English, including technical references. It lists English and Arabic book sections, categories such as Android, databases, programming and networks, and a latest books section with titles available to download.
PDFResizer is a free suite of online PDF tools that runs in the browser. It offers resizing, merging, splitting, cropping, rotating, compressing, and converting PDFs, along with reordering and deleting pages, adding page numbers, N-up printing, password protection and removal, image extraction, repair, form filling, and grayscale conversion. The site states that no software installation or registration is required.
PDF search engine for finding public PDF files, documents, books, and reports.
PeanutBase is a collaborative community resource that integrates genetic, genomic and trait data across Arachis species to support peanut improvement. It provides genome browsers, gene and trait search tools, a BLAST server, germplasm and gene expression resources, and downloadable data sets, with much of the data also accessible through ArachisMine.
PeaZip is a free, open-source file archiver utility for Windows, macOS and Linux. It opens and extracts RAR, TAR and ZIP archives and supports more than 200 formats. The software is built on 7-Zip, Zstandard, FreeArc, Brotli and PAQ compressor technologies. It adds two-factor authentication with a password and keyfile for formats supporting encryption, and it is natively portable.
This data portal provides online access to data from various PermaSense deployments. Virtual sensors load data with an auto-refresh interval the user can set. Accessing, managing and processing PermaSense data requires downloading the PermaSense Data Manager. The project involves the University of Innsbruck, SLF Davos and Uni Zurich, and is powered by GSN from the Distributed Information Systems Lab at EPFL.
Personas by Draftbit is an avatar generator that lets users mix and match skin, hair, facial hair, body, eyes, mouth, nose and accessories with customizable colors. Avatars can be downloaded as PNG or shared as a URL, and every avatar is a link composed with query parameters. It is free and open source under the MIT license.
Pfps.gg is a website for finding profile pictures and banners for social platforms and gaming services, including Discord, Twitter, Instagram, TikTok and Steam. It organizes images into categories such as Anime, Aesthetic and Gif, and lists downloadable pfps with file format and download counts. The site also offers an Android app.
PHI-base is a curated database of molecular and biological information on pathogen genes shown to affect the outcome of pathogen-host interactions. It also records target sites of some anti-infective chemistries and covers pathogens, hosts, diseases, ontologies, taxonomies and literature citations. Users can search, run BLAST searches for homologs and phenotypes, download data and submit published phenotype data.
PhilosophyBasics is a site that breaks philosophy down into manageable chunks. It offers material organized by branch, historical period, movement, and individual thinkers, with a library, a glossary, and a philosophers A–Z.
Phoenix is a semi-untethered jailbreak for all 32-bit devices running iOS 9.3.5 through 9.3.6, created by Siguza and tihmstar. The site provides the IPA download, installation steps using Cydia Impactor, default offsets for affected devices, and a changelog. It notes that the app must be reopened after each reboot and reinstalled when it expires.
PhotoGuruAI is an AI photo app that turns phone selfies into professional photos. Users upload 1 to 10 selfies, pick a look such as LinkedIn Headshot or Dating Photos, and download results in HD or 4K. The first photo is ready in under a minute, and credits never expire.
Photon is a cross-platform file transfer application built with Flutter. It shares folders, files and text, supports folder sharing that preserves directory structure, and works between devices on the same local network or mobile hotspot without an internet connection.
Photopea is a free online photo editor that runs directly in web browsers with no required downloads or file uploads. It supports professional file formats including PSD and RAW, and offers editing tools such as cropping, resizing, layering, masking, and blending. All processing occurs on the user's device, so files never leave their hardware.
PhotoRec is a free and open source file carver data recovery tool that recovers lost files from hard disks, CD-ROMs, and camera memory. It ignores the file system to reach underlying data, so it works even when media is severely damaged or reformatted. It uses read-only access and runs on multiple platforms under the GNU General Public License.
PhotoRestore.ai is a web tool that restores old, damaged and faded photos using AI. It fixes scratches, colorizes black and white images and enhances faces. Users upload a photo, restore it, then download and share the result. Restoration credits are sold in one-time packs and monthly subscriptions.
PhyloPic is an open database of free silhouette images of animals, plants, and other life forms. The silhouettes are available for reuse under Creative Commons licenses and can be downloaded for educational materials, research articles, and other projects. The site also offers API access and accepts uploaded silhouettes.
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.
PhysioBank is an archive of annotated, digitized physiologic signals and time series, organized into more than 50 databases with over 36,000 recordings. The recordings are freely available from PhysioNet. A browser-based PhysioBank ATM allows viewing records and annotations or obtaining limited samples in text format. PhysioToolkit software can read data directly from the PhysioNet server without downloading files first.
Pi-Apps is a collection of shell scripts that install hard-to-install apps on Raspberry Pi and other ARM Linux systems. It is described as a free, open-source app store for Raspberry Pi computers, with scripts that download applications from existing sources rather than requiring a standardized packaging format. Supported systems include Raspberry Pi OS, Ubuntu, Nvidia Jetson, and some other ARM devices.
PicFont is a web tool for adding text to photos. Users can upload an image from a computer or device, choose a canvas size, and add text with effects such as curved text, glow, gradient and textures. The finished image can be downloaded for free. Its page states that designs can start from templates, models and illustrations.
A downloadable set of PICO-8 carts intended to help learners understand various game development concepts. The carts build on each other, allowing concepts to be combined into more complex code with multiple features. It is listed as in development and priced at name your own price.
Picsart offers editing apps for photos, videos, GIFs, stickers and more. The Picsart Photo & Video Editor combines an image enhancer, video editor, photo collage app, meme maker and sticker maker. The Windows photo editor is free to download from the Microsoft Store and is compatible with Windows 10 and 11.
