Trippy provides network diagnostics for checking connectivity, traffic, devices, or internet performance.
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A family of online interpreters for a growing list of practical and recreational programming languages. Users pick a language and type code, which is sent to a sandboxed TIO arena for execution and results returned to the browser. Code and input can be shared through a client-side permalink. The web app is free of charge, ad-free, and does not use tracking cookies.
tuc is a GitHub repository or organization with source code, releases, documentation, or project resources.
TypeHero is a platform for learning TypeScript through interactive exercises. It offers type challenges, curated learning tracks, discussions where developers share solutions, and the ability to create coding challenges for the community. The project is free and open-source, built by community contributors.
UHostAll.com offers free web hosting with features such as unlimited space and bandwidth, instant activation, no forced ads, SSL, and MySQL databases. It describes professional PHP and MySQL hosting powered by clustered technology, with servers using 1 Gbps connections. It also lists paid hosting, support tickets, and a 99% uptime guarantee.
UHostFull.com advertises free unlimited web hosting with unlimited space and bandwidth, instant activation, no forced ads, and MySQL databases. It also mentions a website control panel, virus scanner, spam filter, and one-click install applications. The service describes professional PHP and MySQL hosting on clustered technology with 1 Gbps server connections.
UI Design Daily is a collection of open source UI resources, described as a large database of free UI components and design source files. Individual design components, such as a price card, are created with Figma, and the source file can be downloaded for free.
Umap is a GitHub repository or organization with source code, releases, documentation, or project resources.
UncensoredDNS lists public DNS servers, including an anycast address and a unicast node hosted in Copenhagen, Denmark. The listed servers listen on port 853 for DNS-over-TLS and port 443 for DNS-over-HTTPS. The page provides DNS-over-HTTPS URLs, IPv4 and IPv6 addresses, and TLS public keys for the servers.
Underdash is a page of JavaScript snippets for manipulating collections. It presents synchronous, iterator and async iterator variants of functions such as chunks, concat, dropWhile and equals, intended for copying and pasting as needed.
DFIR tool for parsing URLs, timestamps, IDs, and encoded values into readable investigation clues.
Ungit is a GitHub repository or organization with source code, releases, documentation, or project resources.
UNIT3D is a GitHub repository or organization with source code, releases, documentation, or project resources.
Uno is a GitHub repository or organization with source code, releases, documentation, or project resources.
Uptime Kuma is a GitHub repository or organization with source code, releases, documentation, or project resources.
A curated list of tools and programs for developers, devops, admins, and others, organized into categories such as architecture and diagrams, API development, and backup and archiving. Most listed items are open source, though not all, and the page advises checking applicable licences. The project is hosted on GitHub.
A list of useful tools and programs for developers, DevOps and sysadmins, described as based on the familiar "awesome" lists but maintained as its own version. The project also serves a linked site, and users can build the docs locally with VuePress after installing dependencies.
Discord invite is a developer community or publication for programming discussions, news, tutorials, and help.
uv is a GitHub repository or organization with source code, releases, documentation, or project resources.
Valinor is a GitHub repository or organization with source code, releases, documentation, or project resources.
A handpicked collection of lightweight JavaScript plugins, components and libraries for use in web projects. The site indexes tools such as sliders, modal dialogs, select controls, date pickers, color pickers, image editors, animation libraries, charting libraries and lazy loaders, linking each to demo, source code and npm pages.
Vector Express is a free service for converting vector files among formats including AI, CDR, DWG, DXF, EPS, HPGL, PDF, PLT, PS and SVG. It also offers a free API for converting, processing and analysing vector files, with paid plans for higher limits.
Vector Magic is a raster-to-vector conversion tool available as a browser-based Online Edition and a stand-alone Desktop Edition. It automatically traces JPG, PNG, BMP and GIF bitmap images into full-color SVG, EPS and PDF vectors, with review and editing before download; the desktop edition also produces AI and DXF. Downloads in the Online Edition require a subscription.
Vectorize Image is a browser-based tool that converts PNG, JPG or WebP images into scalable SVG files. Standard vectorization runs locally on the device, with no upload, sign-up or watermark, and offers Logo, Line Art and Photo presets. A paid Pro plan adds monthly AI credits for cloud vectorization, text-to-SVG and reference-to-SVG, plus batch processing.