serpapi.com
SerpApi tracks rankings, SERP visibility, and keyword performance across search results.
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serprecon.com
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.
serpwatch.io
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.
shellcheck.net
ShellCheck is an open source static analysis tool that automatically finds bugs in shell scripts. It is written in Haskell, licensed under GPLv3, and can be installed locally via cabal, apt, dnf, pkg or brew. A web page allows pasting a script to view its output.
sigmajs.org
Sigma.js is a WebGL-powered JavaScript library for interactive graph visualization, built on graphology. It provides GPU-accelerated rendering, built-in pan, zoom, hover and multi-touch interactions, and works with React, Angular, Vue or vanilla JavaScript. Layouts, metrics and community detection come via graphology's standard library.
chrome.google.com
Similarweb tracks rankings, SERP visibility, and keyword performance across search results.
siteliner.com
Siteliner tracks rankings, SERP visibility, and keyword performance across search results.
smallseotools.com
SmallSEOTools is a collection of free SEO tools for checking backlinks, tracking keyword positions and more. It groups text analysis, image editing, keyword, backlink, website management, tracking, domain and meta tag tools. A separate paid plan covers plagiarism checking, image search and related features.
clarin-es-lab.org
The IULA-UPF-CC-CLARIN Competence Center provides specialized web services to Humanities and Social Science research communities as part of the CLARIN European infrastructure. It promotes text analysis tools for large textual data, and its catalogue manages, disseminates and provides access to technological tools using a linked open data approach.
speakerranking.com
Speaker Ranking is an independent catalog and ranking project covering speakers, headphones, amps and DACs. Rankings draw primarily on standardized Spinorama measurements for bookshelf and floorstanding speakers, with reviews and listening for products lacking such data. It reports 2492 speakers, 2011 headphones and 213 amps and DACs ranked. The site is funded through affiliate links.
speedvitals.com
SpeedVitals is a website speed testing tool that runs page speed tests from 30 or more locations and devices and measures Core Web Vitals. It also provides a TTFB test, batch analysis of up to 50 tests, performance monitoring with email and Slack alerts, and reports including waterfall charts and resource summaries. The site lists free tools such as an image compressor and an SEO analyzer.
statscrop.com
Website statistics tool for checking traffic estimates, rankings, domain data, and site value.
strawpoll.com
StrawPoll is a web tool for creating instant, real-time polls and surveys. Polls can be created without signup, and results are shown live in pie chart or bar graph form. Bots and VPN users are blocked from voting by default, and polls run indefinitely unless a deadline is set. An API supports poll creation and result analysis, and integrations include webhooks and data export.
surferseo.com
SurferSEO tracks rankings, SERP visibility, and keyword performance across search results.
tidytextmining.com
Text Mining with R: A Tidy Approach is a website for a guide to text analysis within the tidy data framework, using the tidytext package and other tidy tools. It is written by Julia Silge and David Robinson and licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License.
thatisrank.com
That's Rank! helps research keywords, search demand, related terms, and content opportunities for SEO.
fediversereport.com
The Fediverse Report was a news site covering the fediverse, the ATmosphere and other open social platforms. It published regular numbered reports on Mastodon, Bluesky and related software, plus occasional analysis pieces. The site states that it has been rebranded as Connected Places, and will no longer publish new articles on this site, which now serves as an archive.
trafficvision.live
TrafficVision.Live is a free public directory of live cameras. It aggregates over 155,000 live feeds from 700+ official sources across 130+ countries, including traffic, weather, beach, airport, wildlife, and landmark cams. Users can browse feeds via an interactive world map, build custom driving routes to track cameras along a path, view AI traffic overlays, and play the built-in CamGuessr location guessing game. No account or signup is required.
toolkit.climate.gov
The U.S. Climate Resilience Toolkit is a website offering resources on understanding climate-related risk and practical ways to address it. It includes Steps to Resilience, topics and sectors, training, a registry of experts, and a help desk with FAQs and technical resources.
wappalyzer.com
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.
webaim.org
WebAIM works to expand the potential of the web for people with disabilities by helping individuals and organizations create accessible content. Its offerings include accessibility training, technical assistance, procurement guidance, and evaluation and reporting, alongside surveys and the WebAIM Million analysis of home pages.
woorank.com
Woorank tracks rankings, SERP visibility, and keyword performance across search results.
worldmonitor.app
World Monitor is a free, open-source global intelligence dashboard that streams live data feeds onto a single world map with AI analysis. It covers conflict events, military flights, ship movements, market data, shipping chokepoints, internet outages and cyber signals, and provides a REST API with MCP equivalents.
worldvaluessurvey.org
The World Values Survey is a cross-national survey data archive and analysis platform run by the World Values Survey Association. The association conducts multi-wave surveys on values and political culture, including its eighth survey wave, and provides public access to survey data, documentation, publications, and webinar content. It also administers the annual Ronald F. Inglehart Best Book Award on Political Culture and Values.