stumbleupon.cc
Stumbleupon is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
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stumpapp.dev
Stump helps search books, ebooks, papers, library records, or reading archives.
stutterbox.co.uk
Audio privacy tool that plays disruptive sound to make nearby speech harder to capture.
submarinecablemap.com
Submarine Cable Map is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
substack.net
substack is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
sudomemo.net
Sudomemo is an online platform for sharing flipbook animations called Flipnotes, created using Flipnote Studio on Nintendo DSi and 3DS systems. It preserves and grows the global Flipnote animation community, giving artists worldwide a space to share their work, learn, and keep the art form active. The platform hosts community events including Flipnote contests and local meetups.
forums.sufficientvelocity.com
Sufficient Velocity is an online forum that hosts communities for original fiction, fanfiction, art, and lifestyle discussion. It includes sub-forums for creative writing, roleplaying, grand strategy games, and alternate history. The site provides a dice roller tool and a Gather Dice feature to assist quest masters in managing dice rolls. Users can also access tutorials, news, and special events. The forum contains thousands of threads and millions of messages across its sections.
docs.google.com
SuggestALaptop Guide is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
sumatrapdfreader.org
SumatraPDF is a free, open-source PDF, eBook and comic reader for Windows. It supports PDF, EPUB, MOBI, CBZ, DjVu, XPS, CHM and images, and is described as lightweight and fast, with no ads or bundled software. A portable option runs from a USB drive.
github.com
Sumatrapdf is a code project with source, releases, documentation, or setup notes.
github.com
Summer 2026 Internships is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
summrize.com
Summrize offers free interactive summaries of nonfiction books, with content such as quotes, frameworks and key ideas. The site states that summaries can be read in under 15 minutes and that more books are being added daily.
sunnah.com
Sunnah.com presents hadith of the Prophet Muhammad in several languages, including English, Arabic, Urdu and Bangla. The site provides the Nine Books, other primary collections, selections such as Riyad as-Salihin and An-Nawawi's 40 Hadith, and search with phrase, wildcard, fuzzy and Boolean options. Links to Qur'an, prayer times and audio support are also listed.
suno.com
Suno is an AI music generator that creates original music from user prompts. It offers a browser-based digital audio workstation for editing and mixing tracks, voice cloning to make any voice sing user-written content, stem separation to split songs into individual components, and remix functionality.
libraryarchive.sunway.edu.my
Sunway University Institutional Repository, known as the Sunway Education E‑Archive, provides access to more than 5,000 electronic resources. Users can search or browse the collection by author, item type, subject, or publication year. The repository is powered by EPrints software and includes the latest additions to the archive.
supersnowflakemaker.com
Super Snowflake Maker is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
supercellwx.net
Supercell Wx is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
github.com
Supercell Wx is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
supercook.com
SuperCook is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
erewhon.superkuh.com
SuperKuh helps search books, ebooks, papers, library records, or reading archives.
suppose.tv
Suppose is a miscellaneous web resource for discovery, directories, archives, web culture, or useful tools.
aris.supsi.ch
Repository of University of Applied Sciences and Arts of Southern Switzerland (SUPSI), in Ticino.
surface.syr.edu
SURFACE is the institutional repository for Syracuse University, a service of the Syracuse University Libraries. It holds research and scholarly output selected and deposited by university departments and centers, including articles, issues, papers, theses and dissertations. Existing content remains accessible and citable. The site will be read-only from September 1 through October 19 during a migration to a new platform, with no new submissions or updates made directly through the site.
ssd.eff.org
Surveillance Self-Defense is a project of the Electronic Frontier Foundation offering guides on protecting against online spying. It includes basics on how online surveillance works, tool guides for secure applications, and security scenarios for specific situations.