codepen.io
Online code playground for testing HTML, CSS, and JavaScript snippets in the browser.
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godbolt.org
Compiler Explorer is an interactive online compiler that shows the assembly output of compiled C++, Rust, Go and other code. It offers configurable compilers and instruction set filters, shareable URLs, local file loading, and optional AI explanations that users can disable with a no-ai directive.
text2image.com
A free online tool that converts supplied text into an image file in GIF, JPEG or PNG format. Users choose text up to 500 characters, dimensions between 10 and 1500 pixels, font size from 6pt to 54pt, and foreground and background colors, then download the image or link to it. The site stores choices in a database and a cookie.
docs.google.com
This is a no-longer-maintained Google Sheets resource collection compiled by AaronCTI, with its updated version hosted at OSINTPORTAL.COM. It categorizes links to cyber threat intelligence and open source intelligence resources for lookups including email addresses, IP addresses, social media profiles, and data breaches.
decompiler.com
An online decompiler that accepts uploaded artifacts and converts them back to source code or extracted resources. It supports Java class and archive files, Python bytecode, .NET assemblies, Android packages and Flash files, among other formats.
disasm.pro
Online disassembly tool for reviewing binaries, shellcode, and low-level code snippets.
dudle.inf.tu-dresden.de
Privacy-friendly online scheduling tool for polls, meeting times, and anonymous planning.
aware-online.com
OSINT search page with tools and queries for finding email addresses and related public information online.
epub.pub
EpubPuB is a site for reading books online and downloading eBooks. It lists free books by indie authors across genres such as romance, fantasy, thriller, short stories, young adult and horror, and states that over 10,000 eBooks are available to read online.
fetchrss.com
FetchRSS is an online RSS feed generator that creates feeds from almost any web page. Users enter a source URL and specify content blocks with a visual builder; a unique feed URL is then generated and updates automatically. Feeds can also be made from social media pages such as Facebook pages, YouTube channels and Reddit accounts.
onlinehtmleditor.dev
Online HTML editor is a browser-based HTML editing tool powered by CKEditor 5, offering Word to HTML conversion and real-time collaboration. It provides control over source code, custom elements and styles, and can work with complete HTML documents including meta tags and comments.
defuse.ca
An online HTML escape tool that converts special characters in entered text into their proper HTML codes, so text or HTML code can be pasted onto a website. The produced HTML is designed to look and behave like the original text in a text editor.
ideone.com
Ideone is an online compiler and debugging tool that allows compiling and running code online in more than 40 programming languages. It also supports adding an input stream, saving output, and adding notes and tags. The site is powered by Sphere Engine and is operated by Sphere Research Labs.
imgops.com
ImgOps is a meta-tool for online image operations. A user enters an image by pasting, dragging and dropping, or a URL, then chooses an online image utility. The page lists supported operations including reverse image search, EXIF viewing and removal, editing, format conversion, OCR, and animated GIF utilities. Uploads are stored temporarily in a one-hour cache.
istheservicedown.com
A site that shows realtime status of outages and problems with service providers. It covers categories such as phone and internet providers, video games, VoIP and messaging, online services, mobile apps, postal and delivery services, power utilities and online finance. Users can check outage reports, compare local activity and report a problem.
jiosaavn.com
JioSaavn is an online music service for streaming and downloading Hindi songs, including top hits, albums, playlists and radio. It states that content is available in English and 14 Indian languages. The service offers HD audio playback online and offline downloads.
codeberg.org
Keyoxide Mobile is a Flutter application for the Keyoxide project, which lets people prove ownership of online accounts and domains and link them into a decentralized online identity. A profile shows a green tick next to proven accounts. The repository includes Android, iOS, Linux and Flatpak builds.
app.mindmup.com
Online mind-mapping tool for creating diagrams, outlines, brainstorming maps, and project notes.
mockupnest.com
MockupNest offers free PSD mockups that can be downloaded and edited online, with an online mockup generator for customizing product mockups. It covers categories including packaging, brochures, magazines, flyers and more. The mockups are stated to be free for personal and commercial use, with no registration required.
tworld.io
online demos provides machine-learning models, research, training resources, or evaluation tools.
pdfdrive.com
PDF Drive is a free online platform that provides access to downloadable PDF eBooks across categories including drawing, comics, science and health. It offers faster previews, a personalized experience, and the ability to convert files to EPUB or MOBI format, with options to send downloads to email or Kindle. A premium account option is also available.
pic2map.com
Pic2Map is an online EXIF data viewer with GPS support that allows users to locate and view photos on a map. It uses EXIF data found in photos from digital cameras, smartphones, and tablets. Without GPS data, it still serves as an online EXIF data viewer.
gutenberg.org
Project Gutenberg is a library of free eBooks, with over 75,000 titles offered in ebook formats or for online reading, without fees, registration or ads. Its focus is older works whose U.S. copyright has expired, digitized and proofread by volunteers.
receivesmsonline.net
A site listing virtual phone numbers from countries including the United States, United Kingdom, Sweden and Canada, where visitors read the SMS messages those numbers receive. It states that free receiving requires no registration and that numbers can be used to verify various services.