Directory
Published directory entries matching your search.
Open Source Society University (OSSU) is an open education initiative that provides free self-taught college-level curricula. It offers structured learning paths for Computer Science, Mathematics, Data Science, and Bioinformatics, plus localized versions for Brazilian and Chinese learners. All resources are freely accessible with no cost to users.
OxiCloud is a self-hosted cloud storage project written in Rust for files, photos, calendars and contacts. It includes built-in WebDAV, CalDAV and CardDAV protocols, plus files, previews, sharing, trash, search, favorites and recent items. Deployment options include Docker Compose, a Helm chart and a Nix module.
packet.guru is a public website offering browser privacy and network diagnostic tools. It checks user IP and location, provides Privacy and Trust scores, free DNS, WebRTC and browser-fingerprint leak tests, plus 25 network tools. The tool suite is organized into Network, DNS, WEB and Utility categories for professional use, with tools including ping, traceroute, whois, DNS lookup, URL encoder/decoder, HTTP header checks and base64 encode/decode functions.
Pact is a cross-chain automated market maker and DeFi platform. Its aggregator routes swaps across every DEX on Algorand to find the cheapest fill. It offers concentrated, traditional AMM, and stable-swap pools with multiple fee tiers, plus farms for staking LP tokens and reward programs.
Paintable is a digital painting education site offering free tutorials, project briefs, and resources, plus a community academy with video lessons and feedback. Its Digital Painting Academy offers 370+ video lessons, monthly workshops, and constructive feedback, with a 7-day free trial. The separate Illustration From Imagination program is described as intensive and requires a base knowledge of basics.
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.
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 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.
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.
Pastemyst is a website for storing and sharing text and code snippets, described as completely free and open source. It offers multi-file pastes, accounts, tagging, private and encrypted pastes, editing with a history system, and a REST API, plus a first-party command-line tool called pastry-cli.
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.
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.
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.
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.
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 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 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.
Pingvin Share X is a self-hosted file sharing platform and a fork of Pingvin Share. It supports sharing files by link, with expiration dates, visitor limits and password protection, plus reverse shares, email recipients, OIDC and LDAP authentication, ClamAV scans, and local or S3 storage.
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 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.
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 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 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.
Plezy is a client for Plex, Jellyfin, and Emby built with Flutter, available on desktop, mobile, and TV. It offers library browsing, cross-server search, filtering and sorting, and an Explore tab drawing from sources such as Trakt and MyAnimeList, plus Seerr media requests and watchlist sync.
