Website audit and monitoring tools
Tools that scan, crawl, or continuously monitor websites for SEO, accessibility, performance, security, privacy compliance, broken links, and uptime issues, producing scored reports and suggested fixes for site owners and the people who build sites.
Built for: Website owners, agencies, freelance developers
Projects since May 04
248
Different builders
234
Last 4 weeks vs 8 before
-17%
AI is the core
12%
Projects per week
Mostly web app (61%), browser extension (25%), developer tool or library (5.6%) · from r/SideProject, r/chrome_extensions, r/SaaS, r/vibecoding
Latest
- resilient-async-scraper — Makes async HTTP requests for web scraping with HTTP/2 fingerprint matching, rotating browser User-Agents, and flagging anti-bot status codes like 403, 429 and 503.“My colleague was tired of manual scraping, so I built him a resilient async scraper in Python.”
- The Crawler Zoo — Displays website visitors that are bots as creatures, with leaderboards, bot identity checks, a robots.txt trap, and a game arena for user-submitted bots.“I built The Crawler Zoo: every bot that visits the site becomes an exhibit”
- Pathly — Monitors websites by checking uptime, running scripted browser user journeys, and testing the HTTP/API chains behind pages.“Pathly — Ping / Flow / Chain: watch the path, not just HTTP 200”
- resilient-async-scraper — Fetches web pages asynchronously over HTTP/2 with browser-like headers and flags anti-bot status codes such as 403, 429 and 503.“Tired of scrapers getting instantly flagged? I Built a lightweight async Python scraper with HTTP/2 and anti-bot detection (httpx)”
- Explain This Website — Generates a website audit with overall and category scores, prioritized weaknesses, and recommendations from a pasted URL.“I built a tool that audits any website and tells you what needs fixing”
- DevTools Full-Spectrum Assistant — Scans a open web page in a Chrome DevTools panel for form, accessibility, and runtime errors and produces a scored repair plan with exportable source diffs.“DevTools Full-Spectrum Assistant — audit forms, accessibility, and runtime errors from a DevTools panel”
- DevTools Full Spectrum Audit — Audits a web page for form, accessibility, and runtime/network errors, applies safe fixes to the live DOM, and verifies the results with a before/after rescan.“I built a DevTools panel that audits a page and then proves its fixes worked”
- CTRL Research — Audits a business website's public pages and PageSpeed results, then lets users select findings and notes to build a shareable report.“I built a website audit and reporting tool — would you use its findings in a client meeting?”
- Loads a submitted website once, measures total transferred bytes, and ranks it on a public leaderboard against other sites.“I made a website that ranks your website by weight”
- Disqora — Audits a website for security, compliance, SEO, and AI search visibility issues and suggests fixes.“I built a tool that audits your site for security + compliance issues. Looking for people to try it”
- sitecheck — Scans a website as a visitor would and reports accessibility problems with a score and plain-English fix suggestions.“Built a free accessibility scanner for small business and Shopify sites, looking for 10 store owners to test it”
- Guardian Audit — Audits the current web page for accessibility, security header, and GDPR cookie/tracker issues and produces a scored report.“[Launch] Guardian Audit – 1-click accessibility (WCAG 2.2), security & GDPR audit with fix suggestions”
- Scandiary — Runs axe-core accessibility scans of a website weekly in a browser and reports only new, worsened, or no-longer-detected WCAG 2.1 AA issues.“My whole product is a cron job that scans your site every Monday and diffs the results”
- Onalyse — Audits a website for privacy and cookies, security, SEO, performance, accessibility and some GDPR issues.“I built Onalyse, but I’m starting to question if it actually solves a problem”
- finetooth — Audits websites and produces reports on privacy, accessibility, mobile and other page checks.“My tests were all green and the product was still broken. I found 5 bugs in one afternoon”
- Sitemaxxing — Audits a homepage across nine screen sizes for layout problems, SEO and AI readability, and generates a fix prompt via SMS.“ai you text via sms audits your website for 9 screen sizes”
- Relyvo — Shows community-sourced reputation ratings and user verdicts for the website a user is currently visiting.“I was tired of getting scammed by fake reviews, so I spent 3 months building this Chrome Extension 🛡️”
- websiteauth — Looks up a website's Domain Rating and ranks it on a public startup leaderboard.“I made a fun website where you can check your Domain Rating for free”
- Affiliate Link Inspector — Checks affiliate links on the current web page for Amazon tags, redirects and rel attributes.“Built a free Chrome extension for checking affiliate links”
- LaunchProof — Scans a live website from the outside for security, email, and configuration problems and returns a score with a verdict.“I kept finding the same holes in AI-built apps, so I built a free scanner that checks your live site the way a stranger would”
Most discussed
- Commit Happens — Monitors website uptime, health, SEO, PageSpeed, and traffic, and explains results in plain language.“FINALLY! My app is officially on Google Play 🥳 Next up... 🍎”
- Website Framework Detector — Detects the CMS, frontend framework, hosting, analytics tags and SEO signals of any website with one click.“5.5K Users in 1Day on Chrome extension”
- tryproduck — Reviews a website as a first-time user and sends back a list of bugs and confusing points.“Its feedback Friday so tell me what you are building!”
- Reads website terms of service and highlights potentially harmful clauses.“Most people accept Terms of Service without reading them. I built a Chrome extension that reads them for you and highlights potentially harmful clauses. Here’s what it found in Meta’s Terms of Service 👇”
- TrueTechFinder — Scans a website to detect its technology stack and gives it a score out of 100 with an AI-written explanation.“I built a tool that scans any website, detects its full tech stack, and gives it a Stack Health Score out of 100. Would love your feedback.”
- LinkScope — Maps every domain, script, and tracker a webpage connects to as an interactive graph.“Built a Chrome extension that turns any webpage into a graph of every domain it's secretly talking to”
- AuditMetric — Scans websites for technical SEO issues, known CVE security vulnerabilities, and asset loading performance, with some advanced modules behind prepaid credits.“I built AuditMetric: A free website auditor with unlimited CVE security checks. No monthly subscription.”
- Zirofix — Scans websites for issues across SEO, accessibility, and performance.“built a simple website diagnostic tool — looking for feedback”
- WebGraph — Crawls a website and displays its pages and links as an interactive visual graph.“WebGraph - Explore a Website”
- Monitors uptime and health of many websites at once, with extra features beyond basic uptime checks.“12 years of engineering experience, 0 of marketing. It is time to sail into unknown waters and ask for directions”