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Mp3tag is a tag editor for editing metadata of audio files. It supports batch tag-editing across multiple formats and online database lookups from services such as Discogs, MusicBrainz and freedb. It can also rename files from tag information, create playlists and export tag information.
Nelly is a tool site that presents guild experiments, past client builds and experiment change logs, along with guild rollout views, guild and user information lookups, bot info and a check for domains in Discord's bad domains list. It also includes a FAQ and changelog and states it was inspired by distools.app.
OpenSyllabus is a non-profit archive of higher education teaching materials. It holds a collection of 32.9 million college syllabi from thousands of schools, providing curriculum overviews to support curricular innovation, lifelong learning, and student success. The project aims to expand open education, with most of its tools available for free. Additional offerings include an exploration tool for teaching across syllabi, a course transfer lookup tool, a navigable view of anglophone higher education, a print store for large prints of top-assigned academic titles, and a blog with news and data stories.
Instagram OSINT script for gathering public account information from profile data.
Pingdom's free Website Speed Test analyzes a webpage's load time and identifies bottlenecks. A full page test breaks requests into stages such as DNS lookup, SSL handshake, connect, send, wait, receive and blocked, and flags redirects and 4xx or 5xx responses. Pingdom also offers uptime and performance monitoring from more than 70 global polling locations.
puddletag is an audio tag editor primarily created for GNU/Linux, similar to the Windows program Mp3tag. It uses a spreadsheet-like layout so tags can be edited by hand and visible. It supports extracting tag information from filenames, renaming files based on tags with patterns, and basic tag editing. Functions include text replacement, trimming and case conversion, and Actions automate repetitive tasks. Web lookups using Amazon, Discogs, FreeDB and MusicBrainz are supported.
Quad9 is a free public recursive DNS service operated by the Swiss-based Quad9 Foundation. It replaces a default ISP or enterprise DNS configuration and blocks lookups of malicious host names from a threat list, aiming to protect devices against malware, phishing, spyware and botnets. Service addresses support malware blocking and DNSSEC validation, with optional encryption via HTTPS and TLS.
Readest is a free, open-source ebook reader for EPUB and PDF, available across macOS, Windows, Linux, Android, iOS, and Web. It supports highlights, notes, split-screen reading, text-to-speech, and cloud sync. The documentation also lists EPUB, PDF, MOBI, AZW3, FB2, CBZ, and TXT formats, with on-device, browser, or cloud TTS and translation and lookup tools.
Tagaini Jisho is a free, open-source Japanese dictionary and kanji lookup tool for Windows, MacOS X and Linux. It supports searching vocabulary and kanji entries, tagging and personal notes, flashcard-like training, and printing foldable pocket booklets for offline study. It includes stroke order animations for more than 6000 kanji.
An online tool that calculates checksums of ASCII or Unicode text and of files up to 5MB, using a list of hash algorithms including MD5, SHA1, SHA256 and SHA512. It states that checksums are commonly used to verify data integrity, such as confirming a downloaded file is error-free.
Twitter utility for checking account relationships, followers, friends, favorites, and basic profile signals.
A Twitter research tool page in the OSINT Toolkit listing. It notes that some tools require the subject's Twitter account name and lists capabilities such as posts based on keywords or location, profiles by real name or account name, account bio changes, tweets between specific dates, media search, keyword and account analytics, and mutual follows.
Universal Installer is an Android app for installing and managing APK packages on phones, Android TV and Wear OS. It supports split APK bundles and manual splits, extracts OBB game data, and offers silent install via Shizuku, root or the system installer. It also provides VirusTotal hash lookups before install, local sharing to TVs, and an app manager.
UnrealIRCd is an open source IRC server serving thousands of IRC networks since 1999. It runs on Linux, FreeBSD, NetBSD, macOS and Windows and features module support, IRCv3 support, SSL/TLS, anti-flood and anti-spam systems, and GeoIP lookups.
ViewDNS.info is a site offering free DNS and IP tools, including Reverse IP Lookup, WHOIS, DNS Records, Subdomain Finder, Port Scanner, IP Location and DNS Propagation Checker. It also provides API documentation for domain, IP and network intelligence, with a Sandbox plan of 250 free trial queries and paid plans from $49 per month for 2,500 monthly queries.
Wappalyzer is a service for sales and GTM teams that builds technographic prospect lists, enriches CRM records, and monitors competitor installs using data from millions of websites. Its technology lookup reveals the technologies, company details, and contact data behind a website, while website alerts notify teams of stack changes at monitored sites.
Wappalyzer is a website technology checker that identifies the technologies a site is built with, including CMS and ecommerce platforms, analytics tools, frameworks and infrastructure services. It supports single-domain lookups or bulk analysis of thousands of sites, and can also be used in the browser, in a CRM, or through an API.
Finds the channel ID behind a YouTube channel name, handle, or channel URL.
Yubnub is a web-based command line service that allows users to execute custom commands to access external websites and tools. Example commands include image searches, random number generation, and dictionary lookups. It supports advanced syntax for creating custom commands with multiple parameters and default values, and can be integrated with web browsers including Firefox, Internet Explorer, Safari, and Opera.
