Dev tools · alternatives · 2026
24 alternatives to Passmarked
Simple, all-in-one test to check the quality of your website
Passmarked is a website quality testing tool that runs a comprehensive set of checks on websites. It offers an all-in-one solution for developers and clients to evaluate site performance, SEO, and overall quality. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Passmarked launched in 2018; newer entries below may have overtaken it.
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Copytesting▲781Improve your website copy based on data from your audience
2020 · wynter.com · its alternatives →
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Yes, it's open source: https://github.com/lissy93/web-check :) Why I'm building this? There are a lot of tools out there for discovering meta and security data relating to a website, IP or server. But currently, there isn't anything that does everything, all in one place and without a paywall/ user sign up. It's still a WIP, and I'm working on a new version, with some more comprehensive checks, so any feedback would be much appreciated :)
2024 · v1.web-check.xyz · its alternatives →
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Automated Penetration Testing for AI-Built Apps
2021 · replay.io · its alternatives →
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MarkUp▲442Turn your website into a dynamic canvas ready for feedback
2020 · markup.io · its alternatives →
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Website Grader▲768Grade your website's strengths and weaknesses in seconds.
2016 · website.grader.com · its alternatives →
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Sitechecker▲303Toolkit to measure and track website SEO performance
2020 · sitechecker.pro · its alternatives →
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accessScan▲272Test any website to see if it’s accessible, for free!
2020 · accessibe.com · its alternatives →
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SEO Speed Test▲513Google & ChatGPT ignore slow pages, check if yours is fast!
2025 · seospeedtest.com · its alternatives →
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Check your website's SEO score instantly & boost traffic
2024 · instantseoaudit.com · its alternatives →
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Bookmarkify▲403Collect websites, images, and videos into visual boards
Jan 2026 · bookmarkify.io · its alternatives →
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Grade your website in seconds. Then improve it for free.
2020 · website.grader.com · its alternatives →
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Proofmarked▲154Cybersecurity for everyone. Just in time for Black Friday!
2023 · chromewebstore.google.com · its alternatives →
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Audit your site for improved SEO and conversions!
2018 · cognitiveseo.com · its alternatives →
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Check the credibility of any website in one click
2022 · pr-cy.io · its alternatives →
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Hey HN. We’re Jay and Vadim from Highlight.io (https://highlight.io). We’re building an open source [1] monitoring platform for web applications. Today we’re excited to be sharing a performance tool we’ve been working on, which helps you inspect the latency of code execution from the client to the server. As engineers at past startups, we often had to debug slow queries, poor load times, inconsistent errors, etc... While tools like Jaegar [2] helped us inspect server-side performance, we had no way to tie user events to the traces we were inspecting. In other words, although we had…
2024 · github.com · its alternatives →
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Free SEO tool to optimize your content
2021 · dashword.com · its alternatives →
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Checkbot finds SEO, speed & security problems before your website visitors do. Tests for broken links, duplicate content, invalid HTML/CSS/JavaScript, insecure pages & more. Test 100s of pages at once including local sites to keep on top of problems & stop critical issues going live.
2018 · checkbot.io · its alternatives →
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Check all your website’s SEO metrics through our service
2021 · pr-cy.io · its alternatives →
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ValidBot▲73Comprehensive safety and performance inspection of your site
2021 · validbot.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →