The National Portrait Gallery's online collection provides a searchable database of portraits from the 8th century to the present day. It covers a primary collection of more than 11,000 paintings, drawings, miniatures and sculptures, a photographs collection of over 250,000 items and a reference collection of over 70,000 portraits. Themed groups and a Schools hub with art and history resources are also listed.
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openclipart is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
Orion Icon Library is an icon tool offering free SVG and PNG icons. The site lists 3,415 free SVG vector icons and describes an advanced interactive web app with line, solid, color and flat styles, plus a free plan and an unlimited plan.
ParaView is an open-source, multi-platform data analysis and visualization application built to analyze extremely large datasets using distributed memory computing resources. It runs on Linux, macOS and Windows, from laptops to supercomputers, and includes readers for many file formats and more than 200 filters. It can also run in situ using ParaView Catalyst and in a web browser using trame.
Open source design and prototyping platform for UI teams, components, and collaborative design.
Open source design and prototyping platform for UI teams, components, and collaborative design.
Percival is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
Phosphor Icons is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
Picasso is a tool that turns simulator screenshots into App Store screenshots. It adds device frames, supports localization via a strings file, and can upload screenshots to App Store Connect. The editor requires no design experience, and the app supports over 40 device frames and every Apple platform. It requires iOS 17 or macOS 14 (Sonoma).
pictogrammers is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
Pie Chart Maker is a free online tool for creating pie charts. Users enter labels and values, and can configure options such as background color, legend position, pie hole for a doughnut chart, 3D display and slice text. Charts can be downloaded as jpg, png or svg files.
Piechartmaker is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
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.
Pixeden is a provider of digital design assets, services and tools for the creative community. Since 2010 it has offered exclusive web and design assets, and it launched Orion Icon Library in 2017 and Pixeden Music in 2019. In 2022 the membership platform was rebranded as Pixeden Club.
Pixelbuddha is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
PlantText is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
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.
Visual web design and app builder for creating React sites, pages, and design-driven components.
PlusPNG is a library of transparent PNG images, logos and clipart. The site states that its collection contains more than 180,000 free transparent PNG image files. Images are intended for non-profit purposes only, and the site mentions that PlusPNG.com launched in August, 2017.
pngall is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
PNGEgg is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
PNGFind is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
PNGHero is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
PNGHut is a database of free to download transparent PNG images, with user-created and uploaded content. Uploading is available to members after an account period; images are available for personal and editorial use, with a premium account required for commercial rights.