Piano Scribe is a web application that converts raw audio to MIDI using Onsets and Frames, a neural network trained for polyphonic piano transcription. Users can record themselves playing piano or choose a solo piano audio file from their device. All processing happens locally in the browser using Magenta.js and TensorFlow.js.
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Pianobook is a community of composers, producers and music makers sharing free virtual instruments. Founded by Christian Henson in 2018, the site offers a catalogue of sounds and encourages use of the free Decent Sampler plugin. Instrument demos are contributed by the community.
Picarta uses AI to predict where a photo was taken, returning estimated GPS coordinates, city, and country with confidence scores. It analyzes visual clues in the image rather than relying on EXIF metadata or embedded GPS tags. The project offers a web app and an API, with on-premise deployment for enterprise clients.
Pico is a professional icon editor for making app icons with layer-based editing, real-time preview and one-click export for iOS and Android. It is labeled an early beta, and the site says no signup is required. Assets such as SVGs, images or built-in shapes can be uploaded and composed in layers.
Lorem Picsum provides placeholder photos. Adding an image size to the URL returns a random image, and options allow a specific image, a seeded random image that stays the same, grayscale and blur. Multiple options can be combined, and .jpg or .webp file endings can be added. Endpoints list images and return details about a specific image.
PictureThis is a plant identifier app and website that identifies flowers, leaves, trees and herbs from a photo. It provides information on disease prevention, treatment, toxicity, care, uses and symbolism, along with a plant encyclopedia and plant care guide covering houseplants, garden plants, flowers, fruits and vegetables.
PICWE is a decentralized trading protocol for swapping tokens and accessing on-chain liquidity.
Pidantuan is a free mutual help academic community that provides access to scientific research content. It offers Sci-Hub unlocker tools, free scientific articles, free research papers, and other scientific research tools with no charged fees. The community shares academic content from publishers including Elsevier, Wiley, Oxford, and JAMA, and operates associated Facebook and Telegram groups for users.
Pidgin is a free chat program that lets users log into accounts on multiple chat networks simultaneously. It is compatible out of the box with networks including Jabber/XMPP, Bonjour, Gadu-Gadu, IRC, and others, and plugins can add more. Pidgin runs on Windows, Linux, and other UNIX-like operating systems; it contains no ads and is open source under the GNU General Public License.
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.
pigz is a parallel implementation of gzip for multi-processor, multi-core machines. It is a fully functional replacement for gzip that exploits multiple processors and cores when compressing data. It was written by Mark Adler and uses the zlib and pthread libraries.
Pika offers self-contained AI creative tools for video, image and sound work. Tools include Video Studio for generating clips up to a 30-second multi-shot video, Color Grade for adjusting color and contrast, Extend Video for lengthening clips with extra frames, and Pika Soundtrack for scoring clips. Character Studio, Image Studio and Product Shot support image creation and editing. Support is available for the web, the iOS app and the API.
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.
Regional streaming service from Pilot, focused on films, series, and programmes from supported markets.
PineTools is a collection of free online tools for common tasks with mathematics, colors, text and lists, numbers, date and time, images, randomness, files and programming. The site also lists video tools described as being for creating, editing, cropping, trimming and merging videos.
PinkSale is a launchpad protocol for creating tokens and token sales. It offers tools for minting standard and deflationary tokens, creating sales for custom tokens, building launchpads, branding, management, community promotion and liquidity locking. Tokens created on the platform are described as verified and published on explorer websites. A PINKSALE token is planned with service fee payments, revenue sharing, airdrops and token burn.
Pinta is a free, open-source program for drawing and image editing that combines an easy-to-use interface with tools such as a magic wand, clone and recolor. It offers real-time effects with live previews and unlimited undo, and is available on Linux, Mac, Windows and BSD.
Pipeline is a Rust and GTK application for watching YouTube and PeerTube videos in one place. The project is hosted on GitLab and licensed under the GNU General Public License v3.0 or later.
Pipeseroni maintains terminal screensavers, the best known being pipes.sh, an original script written in Bash. Related programs include pipes.c in C, snakes.pl in Perl, maze.py in Python, pipesX.sh and weave.sh. The project began with a script posted to the Arch Linux Forums in early 2010, and an MIT license was added in 2015.
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.
Pitivi is a free, open-source video editor designed for Linux. The project is built on the belief that everyone should have access to owned, improvable tools for filmmaking and personal expression. It features an intuitive user interface, a clean codebase, and an active community. Past software releases have introduced functionality including auto alignment, precise audio waveforms, object tracking, beat detection, enhanced clip properties, and media library clip tagging.
The Pittsburgh Queer History Project (PQHP) is an oral history and media initiative founded in 2012 that focuses on LGBTQ after-hours nightlife in Pittsburgh, Pennsylvania between 1960 and 1990. Its core program is Miss 89 (MS89), a series of in-person intergenerational media archive events featuring rare film screenings and other activities to support collective, cross-generational memory sharing. The project also hosts public events.
PiVPN is a set of shell scripts designed to set up and manage a VPN on a Raspberry Pi, and the installer also works on Ubuntu or Debian. It allows customization of the VPN port, key encryption strength and client DNS server, and provides a pivpn command for adding or revoking client profiles.