RADAR4Chem, hosted at radar4chem.radar-service.eu, is a research data archive that is part of the RADAR research data repository family. It is available in German and English, and enables users to search and filter the latest data publications by attributes including creators, publishers, production year, language, subject areas, resource type, license, rights holders, community, keywords, and ontologies. The platform also provides access to repository information including its privacy policy, terms and conditions, legal notices, and accessibility declaration.
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RADAR4Culture is a research data repository that provides access to the latest data publications. Users can filter publications by creators, publishers, production year, language, subject areas, resource type, license, rights holders, community, keywords, and ontologies. The site also includes links to its privacy policy, terms and conditions, legal notices, and accessibility declaration.
rfc.fyi is a search tool designed for fast searching of the RFC Series. It supports searches by titles, keywords, and full text, includes options to display obsolete and historic RFCs, and allows filtering results by collection, stream, level, or working group.
SASBDB is a curated repository for small angle scattering data and models of biological macromolecules. It holds experimental data sets and models, deposited with experimental conditions, sample details, and derived models with fits to the data. The repository is browsable and searchable by organism, macromolecule type, model type, and other keywords.
Searchcraigslist.org is a third-party search tool for Craigslist. It enables users to search all Craigslist classified listings nationwide, rather than being limited to local area results. Users can enter keywords to find items or services, add terms to refine searches, or use minus signs to exclude specific terms from results. The site also hosts informational articles related to selling items on Craigslist, including guidance on creating effective ad images. It is not affiliated with Craigslist.
A British Columbia government search page for finding information records released by the B.C. government, including information released regularly or released by request. It recommends that entered keywords be spelled correctly for best results.
Searches Twitter bios and profiles to find accounts by keywords, interests, locations, or roles.
SEO Minion tracks rankings, SERP visibility, and keyword performance across search results.
SEO Search Simulator tracks rankings, SERP visibility, and keyword performance across search results.
Seodity is an SEO toolkit offering keyword research, competitor analysis, content generation with AI, rank tracking and backlink checking. Plans have monthly limits covering projects, tracked keywords, audits and AI articles.
Seoformulas helps research keywords, search demand, related terms, and content opportunities for SEO.
SERanking tracks rankings, SERP visibility, and keyword performance across search results.
Serp Miner helps research keywords, search demand, related terms, and content opportunities for SEO.
SerpApi tracks rankings, SERP visibility, and keyword performance across search results.
SerpBear is an open source search engine position tracking app. It tracks a website's keyword positions in Google and sends email notifications about position changes. It uses third-party scrapers or proxy IPs to scrape Google search results, with Basic, Custom and Smart scrape strategies. A built-in API supports reporting tools, and Google Ads and Search Console integrations are available.
SERPrecon is an SEO and GEO tool that reads search results and AI answers to diagnose whether content, intent or authority is limiting a page across Google, ChatGPT and Perplexity. It offers page reports with an Action Plan, content scoring before publishing, and Share of Voice tracking. A 7-day free trial is offered without a payment method.
Serpstat is a marketing tool for SEO and content tasks. It offers backlink analysis, rank tracking, keyword research, competitor analysis and site audits. The platform includes an API, keyword clustering and scheduled automatic checks. Paid plans include Individual, Team and Team x2, and a seven-day free trial of paid features is offered.
SerpWatch is an SEO rank tracking tool for marketers and agencies. It tracks keyword rankings, sends rank-drop notifications, and includes client management, white-label client portals, report building and a local rank tracker. Pricing is based on monthly keyword checks, with plans from $29 to $199 per month billed annually.
Shortshare is a utility application for URL shortener services, supporting 14 established services plus custom APIs and self-hosted solutions such as YOURLS. It shortens URLs via a menu bar icon, keyboard shortcut, Safari App Extension, Share Extension or the Windows Share menu, and supports custom URL keywords where the service allows. Link history synchronises across macOS and iOS devices via iCloud. The developer states it is no longer available for iOS and macOS.
SIBiLS is a service of the Swiss Institute of Bioinformatics that provides personalized information retrieval in biological literature. It offers fully customizable searches in semantically enriched content using keywords or mapped biomedical entities from standardized and legacy vocabularies. Its collections include MEDLINE, PubMedCentral, Plazi treatments and PMC supplementary files, updated daily, and it is accessible via REST APIs.
Similarweb tracks rankings, SERP visibility, and keyword performance across search results.
Siteliner tracks rankings, SERP visibility, and keyword performance across search results.
SMOKA is an archive providing public science data from Subaru Telescope and several other Japanese telescopes, including Okayama, Kiso, MITSuME, Kanata, Seimei and Nayuta. It is intended mainly for astronomical researchers and offers searches by object name, coordinates, calendar date, keywords and summit logs. User registration is required to retrieve FITS data. It is developed and maintained by NAOJ's Astronomical Data Archives Center.
SocialBu is a social media management tool for planning, scheduling, responding to, automating, and analyzing social media across connected accounts. It offers AI-assisted drafting and refinement of posts and captions, content curation, listening streams for mentions and keywords, a unified inbox, automation rules, and performance reports. A 7-day free trial is mentioned. An MCP Server connects compatible AI clients to supported tasks.