Directory
Published directory entries matching your search.
Papers We Love is a repository of academic computer science papers and a community of people who read them. It lists chapters in cities worldwide and features talks on papers, including presentations on Amazon's Dynamo and on Zep.
PCjs Machines offers online machine emulators written in JavaScript. It runs DOS, Windows, OS/2 and other vintage PC applications in a web browser on desktop computers, iPhones and iPads. Emulations also cover microcomputers, minicomputers, terminals, programmable calculators and arcade machines, alongside an archive of historical software and documentation.
PDPM Indian Institute of Information Technology, Design and Manufacturing Jabalpur up in Jabalpur, India is known for Physics and Astronomy.
Perspec is a scriptable desktop app to correct the perspective of images, such as photos of whiteboards, document scans, or facades. Its integrated computer vision algorithms automatically detect document corners, which can be manually adjusted if incorrect. Corrected images can be saved in several color modes. It is also usable via a command line interface.
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.
Pieces is a memory layer that runs in the background on a computer, forming a searchable record of work from apps the user already uses. It captures activity chronologically so users can search, filter and revisit moments, and carry context into AI tools. Memories are saved on-device by default, and capture from copy and paste is opt-in.
PLA Space Engineering University (Beijing, China) is where it's at for Biochemistry, Genetics and Molecular Biology and Earth and Planetary Sciences.
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.
PlayScrabble is a browser site for playing Scrabble online. Games can be played with friends and family or against the computer in real time. The site also links to a Scrabble word finder and dictionary.
Polaris is a self-hosted music streaming server for enjoying a music collection from any computer or mobile device. It is free and open-source software with no premium version. It runs on Windows, Linux, BSD, or through Docker and supports flac, mp3, mp4, mpc, ogg, opus, ape, wav and aiff files.
PortableAppZ offers portable applications that run from a removable drive on Windows computers without installation, preserving settings on the drive rather than the host. Entries include portable Chrome, Chromium, SRWare Iron, Thunderbird and Opera builds. The site notes turning off User Account Control or running the launcher as admin on Vista and above.
Portal is a command-line file transfer utility for sending files and folders between computers. Senders generate a temporary password that receivers use to connect, with transfer occurring directly or through a relay server. It supports end-to-end encryption using PAKE2 and parallel gzip compression.
Port Checker is a free online tool for checking open ports on a computer or device and verifying port forwarding setup on a router. It can help diagnose connection errors and problems with firewall setup, and supports entering a custom target IP address.
PortChecker is a free online tool for checking whether the ports of an internet-connected device are open or closed. It can also ping a remote server and test port forwarding settings. The tool attempts a TCP connection and reports success or a port open signal. Checking requires the computer to be reachable via a public IP address or have a port forwarded.
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.
PRISM Break is a site that encourages opting out of global data surveillance programs such as PRISM, XKeyscore and Tempora by encrypting communications and ending reliance on proprietary services. It lists recommended projects by platform, including mobile, computer and network categories. The site states that using the recommended projects will not guarantee that all communications are shielded against surveillance states.
Project Naptha is a browser-based tool that applies computer vision algorithms to images on web pages so text inside them can be highlighted, copied, edited and translated. The project page is a live demo showing text selection over words in an image. It was made by Kevin Kwok and Guillermo Webster.
Protopage is a personal start page accessible from any computer. It reads RSS feeds and includes bookmarks, sticky notes and sharing, and can serve as an intranet dashboard or web portal.
QOwnNotes is an open source markdown note-taking application for Linux, macOS and Windows that works together with Nextcloud Notes. Notes are stored as plain-text markdown files on the computer, and sync services such as Nextcloud can be used to sync notes across devices. It is described as a native application optimized for speed and low processor and memory use.
qrcp transfers files over Wi-Fi between a computer and a mobile device by scanning a QR code from the terminal. It binds a web server to the Wi-Fi interface address on a random port, prints a QR code encoding a URL, and serves content or an upload page. It can send files and folders or receive files.
A large online directory of thousands of free e-books on science and technology subjects, including computer science, medical science, mathematics, physics and biology. Users can upload their own books, which are checked before being added, or request a book. Links are listed by publisher and category with a download link for each title.
Qubes is a security-oriented, free and open-source operating system for personal computers. It uses the Xen hypervisor to compartmentalize a digital life, and it can run more than one Linux or Windows operating system. Integrated Whonix allows anonymous Internet use over the Tor network.
Radmin VPN is free software that creates virtual local networks, connecting computers located behind firewalls into one network. It is compatible with Windows 11, 10, 8 and 7, and offers a secure tunnel with 256-bit AES encryption. It can be used to connect distributed teams, work remotely, and play LAN games over the Internet.
