webmaster.yandex.com
Yandex Webmaster crawls websites to audit SEO, accessibility, performance, and technical page issues.
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yoast.com
Yoast SEO helps audit websites, improve search visibility, and monitor SEO or analytics performance.
youlinker.pro
YouLinker helps audit websites, improve search visibility, and monitor SEO or analytics performance.
alttextlab.com
AltTextLab is an AI-powered alt text generator for images. It produces descriptions in 130+ languages and integrates with WordPress, Shopify, Webflow, and 20+ tools, also offering a web snippet and REST API. It provides 25 free credits monthly with no credit card required.
brightlocal.com
BrightLocal is a local SEO software platform with tools described as helping users monitor, audit and improve local SEO. Its stated functions include tracking local rankings, auditing citations, auditing local SEO, and managing and building business listings. A 14-day free trial is offered.
browseo.net
BROWSEO is a web app for viewing web pages without distracting styles and with SEO-relevant parts highlighted. It requires no download or installation; a URL is entered to start. The output focuses on pure HTML similar to what search engines see, with toggles for elements such as server response code, headings, links and META information.
dnsperf.com
A DNS speed benchmarking tool that performs an A record lookup for the apex domain name from more than 200 locations worldwide. The lookup time serves as a benchmark of DNS provider performance in different regions and allows debugging of self-hosted DNS servers and testing of routing logic. Test result retention is up to 30 days.
evaligo.com
Evaligo is a visual drag-and-drop AI workflow builder platform that includes built-in A/B testing capabilities. Users can construct workflows combining prompts, agents and tools, run them across multiple AI models, score outputs using blind AI judge panels, compare performance metrics including quality, cost and speed per output, train per-input model routers, and deploy any workflow as an API. A free plan with no credit card requirement is offered.
fast.com
Fast.com is a simple internet speed testing tool. It estimates a user's download speed in seconds, with support for dozens of languages. The tool also offers optional metrics including upload speed, loaded and unloaded latency, and configurable parallel connection and test duration settings for more detailed network performance checks.
github.com
Testing framework dedicated to ML models, from tabular to LLMs. Detect risks of biases, performance issues and errors in 4 lines of code.
gridmybusiness.com
A local SEO tool that scans geo-grids to show Google Maps rankings across multiple locations and offers AI-assisted optimization of Google Business Profiles. It includes rank tracking, competitor tracking, support for service area businesses, and AI search visibility checks. Agency features include white-label PDF reports, organized workspaces, and secure team management.
librecrawl.com
LibreCrawl is a free, open-source SEO crawler offered as an alternative to Screaming Frog. It performs technical audits covering meta tags, schema markup, hreflang, social tags and PageSpeed metrics, and integrates Playwright for JavaScript rendering of single-page applications. The project is MIT-licensed and can be self-hosted, with CSV, JSON and XML exports. A REST API provides programmatic control of crawls.
search.google.com
Lighthouse Rich Result Checker helps create or test structured data, schema markup, and rich-result eligibility.
mangools.com
Mangools is a suite of SEO tools for keyword research, SERP analysis, rank tracking, backlink analysis and competitor research. Its tools include KWFinder, SERPChecker, SERPWatcher, LinkMiner and SiteProfiler, with a keyword database of over 2.5 billion keywords. Rank tracking is weekly, with daily tracking on the Agency plan.
memtest.org
Memtest86+ is a free, open-source, stand-alone memory testing tool for 32-bit and 64-bit computers, with support for both BIOS and UEFI boot. It provides more thorough memory checking than standard BIOS memory tests, and supports IA-32, x86-64, and LoongArch64 system architectures. The tool is released under the GNU GPL v2.0 license, and is not affiliated with the closed-source Memtest86 software owned by PassMark Software Pty Ltd.
mousetester.io
MouseTester.io is a browser-based tool for testing mouse buttons, wheel, polling rate and double-click behavior. It uses browser pointer events to report click response and polling rate data without drivers or downloads, and runs tests locally in the browser.
moz.com
Moz On-Page Grader is an SEO tool that takes a URL and keyword and returns a page optimization score with a checklist of recommended fixes. It is accessed through a Moz Pro free trial, which also includes Link Explorer, Keyword Explorer and On-Demand Crawl.
github.com
This project is a personal portfolio and blog template built with Astro.js. It is intended for showcasing projects and technical writing, and includes a blog with code highlighting, tag-based categorization, a project showcase, dark mode, responsive design, and SEO features. The stack includes React, Preact, Tailwind CSS, TypeScript and MDX; Node.js v18 or higher is required.
replay.io
Replay QA is an autonomous testing harness for web applications. Agents explore an app, write and run tests in a Chromium browser, and record deterministic runtime sessions. It reports bugs such as runtime bugs, UI glitches, accessibility issues, performance problems and security vulnerabilities, with a root cause and suggested fix. Reports go to GitHub, Linear, Jira or other HTTP endpoints.
rhasspy.readthedocs.io
Rhasspy is an open source, fully offline set of voice assistant services for many human languages. It works with Hermes protocol compatible services, Home Assistant, Hass.io, Node-RED, Jeedom and OpenHAB. Voice commands are specified in a template language and produce JSON events that can trigger actions in home automation software. A web interface allows configuration, programming and testing, with functionality exposed through an HTTP API.
rufus.ie
Rufus is a lightweight Windows system utility that creates bootable USB drives. These drives can be used to install or run Microsoft Windows, Linux, or DOS on a computer. The tool is designed for speed and simplicity, requiring only a small number of clicks and a few minutes of time to generate a functional bootable drive for operating system deployment, testing, or recovery use cases.
screamingfrog.co.uk
Screaming Frog SEO Spider is a website crawler for Windows, macOS and Ubuntu used for technical SEO site audits. It audits sites for over 300 SEO issues and can find broken links, audit redirects, analyse page titles and meta data, and generate XML sitemaps. A free version is available.
seogets.com
SEO Gets is a Google Search Console and GA4 analytics tool for SEO professionals. It offers a master dashboard consolidating search console websites, content groups, striking distance, cannibalization and content decay analysis, index reporting and monitoring, and an MCP server for plugging SEO data into AI assistants. Magic share links share dashboards without requiring account creation.
seoutils.app
SEO Utils is an SEO desktop application for macOS, Windows and Linux. It covers traditional SEO, local SEO and AI search optimization, with tools for tracking rankings across Google, Bing, ChatGPT, AI Overviews and AI Mode, LLM rank tracking, log file analysis, an MCP server, NLP text analysis and an embedding database.