The Pakistan Institute of Engineering and Applied Sciences (PIEAS) in Islamabad is a federal public university focused on engineering, natural sciences and formal sciences. It offers BS, MS, MPhil and PhD programs, with postgraduate programs dominating, plus specialized short courses for professionals. Its site publishes news and event listings.
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palworld.th.gl
Palworld Interactive Maps & Locations is a fan-made resource for Palworld by The Hidden Gaming Lair. It offers 164 interactive maps covering locations across Palpagos Island, The World Tree and other areas, alongside a database of Pals, items, recipes and technology, plus tools including a Breeding Calculator and an IV Calculator.
papra.app
Papra is an open-source document archiving platform for organizing, securing and archiving documents. It offers organizations, document tagging, search, a developer API, webhooks, CLI and SDK, plus email ingestion that imports attachments. The project is available on GitHub under the AGPL-3.0 license and can be self-hosted. Paid plans add storage, members and intake email addresses.
parkmath.github.io
Park School Mathematics is a site presenting a series of mathematics books, from Book 1: Reasoning and Proving through Book 10: Functions and Models II, plus additional custom books. Book pages list lessons covering topics such as combinatorics, linear equations, quadratic models, graph theory, geometric proof, circular functions, algorithms, logarithms and recursion.
jakubmelka.github.io
PDF4QT is an open source PDF editor for Windows and Linux under the LGPLv3 license. It offers applications for viewing, editing and rendering PDF documents, plus a C++ library and command line tool for developers. Features include digital signature verification, annotation editing and page organization such as merging and splitting.
writing.upenn.edu
PennSound is a University of Pennsylvania project that hosts a large publicly accessible archive of poetry audio recordings and related literary resources. The platform’s holdings include authors series, anthologies, collections, group recordings, PennSound Daily archives, singles, close listening series, cinema classics, medialinks, podcasts and the PennSound Rewind series. It also hosts dedicated resources such as the Creeley Listening Station, a curated collection of tracks celebrating poet Robert Creeley’s centenary, plus audio recordings of works by poets including Charles Bernstein, Caroline Bergvall and Christian Bôk.
swaroopg92.github.io
Penpa+ is a browser application for creating and solving Sudokus and puzzles on a selection of grid types. It provides drawing tools for lines, edges, walls, cages, boxes and numbers, plus shareable puzzle links and solution checking for constraints.
peoplesgdarchive.org
The People’s Graphic Design Archive is a crowd-sourced virtual archive of inclusive graphic design history. It holds finished projects, process material, photos, correspondence, oral histories, articles and essays, plus links to other archives. Submissions must have been produced at least 10 years ago.
periodicvideos.com
The Periodic Table of Videos is a project by video journalist Brady Haran working with chemists at the University of Nottingham. It provides short videos about every element on the periodic table, plus experiments and other chemistry content. All 118 elements have videos, which are being updated.
photodemon.org
PhotoDemon is a free, portable, open-source photo editor for Microsoft Windows. It requires no installation, administrator rights or internet access, and can run from a USB stick or SD card. The build offers more than 200 tools, including layers, selection tools, paintbrushes, content-aware fill and resize, plus support for PSD, PSP and XCF files. It is available under a permissive BSD license.
pikpng.com
PikPng is a community site offering a large selection of free transparent PNG images, cliparts and icons in high resolution. Images come mainly from user email submissions or direct uploads, each manually reviewed, plus some collected from public domains. Downloads are free and unlimited for personal, educational and non-commercial use, and the site provides search and filtering.
pinout.xyz
Pinout! is an interactive reference to the Raspberry Pi GPIO pins and a guide to the Raspberry Pi's GPIO interfaces. It also includes hundreds of pinouts for Raspberry Pi add-on boards, HATs and pHATs, plus pinouts for the Raspberry Pi Pico range and chip planners for the RP2350A and RP2350B chips.
pixletters.com
Pixletters is a browser word-guessing game in which players guess five-letter words over five tries and receive color pixel clues about letters. It offers daily words, word statistics, and PLUS and PRO modes, and is also available as an Android and iPhone/iPad app.
edal-pgp.ipk-gatersleben.de
The PGP Repository is an infrastructure for publishing plant research data. It offers submission options for IPK staff and for partners using ELIXIR authentication, plus web-based submission. Users can browse and search the repository through the DataCite Metadata Store, and view access and download statistics for stored datasets.
plantuml.com
PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. It supports diagram types including sequence, use case, class, object, activity, component, deployment, state and timing diagrams, plus non-UML diagrams. Images can be exported in PNG, LaTeX, EPS and SVG.
playit.gg
Playit.gg is a global proxy that lets users host game servers from their own computer and lets friends connect without port forwarding; only the host runs the agent. It lists built-in support for popular multiplayer games plus custom TCP/UDP, and the agent runs on Windows, Linux, macOS and Docker. A free tier is available, and premium costs $3/month.
plusai.com
Plus is an AI assistant for PowerPoint and Google Slides that helps users create, refine and present presentations. It can generate slides from a prompt or an uploaded file, rewrite and reformat content, add images and charts, and work with custom templates and preset libraries.
syphist.com
An archive of code generators for Pokemon Mystery Dungeon Rescue Team and Pokemon Mystery Dungeon Explorers. It lists generators for Wonder Mail, SOS Mail and SOS to A-OK Mail, plus a Wonder Mail S generator exclusive to Explorers of Sky.
poetryintranslation.com
Poetry In Translation is A. S. Kline's open access poetry archive and a niche digital publisher offering modern translations of classic texts by famous poets, plus original poetry and critical works. Texts are downloadable and free for non-commercial reuse, with browsing by language, epoch, author and contributor. Some works are also available in print or audio editions.
polyu.edu.hk
A Cantonese learning website from The Hong Kong Polytechnic University. It covers Cantonese initials, finals and tones, with listening and reading exercises at beginner, intermediate and advanced levels, plus daily communication vocabulary and sentences.
popupoff.org
PopUpOFF is a non-commercial, open-source browser extension that removes popups, overlays and cookie notifications. It offers aggressive, moderate and delicate modes, plus an experimental Anti-paid feature. Information is stored locally and the project states it uses no tracking or analytics.
course.fast.ai
A free course for people with some coding experience who want to learn how to apply deep learning and machine learning to practical problems. It includes 9 lessons of around 90 minutes each, covering computer vision, natural language processing, tabular analysis, and collaborative filtering, plus building and training models, random forests, deployment, and use of PyTorch, fastai and Hugging Face.
projectwallace.com
Project Wallace is a web-based CSS analyzer that examines stylesheets for complexity, specificity, performance and design tokens. Users paste a URL or raw CSS to receive a full analysis, a quality score, a design token audit and a custom property inspector, plus a cascade layer visualizer. Standalone tools include a CSS prettifier, minifier, diff viewer and specificity calculator.
prologue.audio
Prologue is a self-hosted audiobook player for Plex and Audiobookshelf. It streams, downloads and syncs an audiobook library across iPhone, iPad, Apple Watch and CarPlay. It includes offline downloads, collections and series, bookmarks, a reading list, per-book settings, a sleep timer, smart rewind, Voice Boost and an equalizer, plus Siri and widget support.