Life & fun · alternatives · 2026
24 alternatives to Will It CORS? – an automatic CORS explainer
Test CORS online with our free CORS tester. Check CORS on any URL for free.
Will It CORS? is an automatic tool that explains Cross-Origin Resource Sharing (CORS) issues. Launched in 2020, it helps developers understand CORS problems by analyzing requests and providing clear explanations. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Will It CORS? – an automatic CORS explainer launched in 2020; newer entries below may have overtaken it.
- 1
Easy communication between cross-origin browser tabs. Simplified "CORS"ing! - wingify/across-tabs
2017 · github.com · its alternatives →
- 2
This API enables cross-origin requests to anywhere.
2017 · cors-anywhere.herokuapp.com · its alternatives →
- 3
Coval▲1,012Simulation & evals to ship delightful voice & chat AI agents
2024 · coval.ai · its alternatives →
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Instantly detect your browser, operating system, screen resolution, and more. Get a shareable link with your browser details for support agents.
2012 · aboutmybrowser.com · its alternatives →
- 6
CORS Unblock▲18Enable cross-origin requests for web applications
2025 · chromewebstore.google.com · its alternatives →
- 7
Anything API▲656Hey HN! We built Notte, a browser infrastructure and agents platform. Many of our users automate UI workflows or extract data from sites that don’t have APIs. In practice, we noticed that once an agent understands how a site works, parts of the task can often run without a browser by interacting with the same network requests the site uses. So we built Anything API: describe a browser task, and our agent explores the site, builds a function, tests it against your description, and deploys a callable REST endpoint. No infra to manage. How the build works: - Describe the task (best results come…
Mar 2026 · anything.notte.cc · its alternatives →
- 8
Automated Penetration Testing for AI-Built Apps
2021 · replay.io · its alternatives →
- 9
Cohere▲278See what your users are seeing, engage them with context.
2021 · cohere.io · its alternatives →
- 10
Making Web Testing Easier Automated testing on 3000+ desktop & mobile browser at Studio version! Making Web Testing Easier Automated testing on 3000+ desktop & mobile browser at Studio version! Explore product trial and special offers Download TRIAL version to start your full 1 day evaluation now! M
2017 · browseemall.com · its alternatives →
- 11
Replay QA▲438Replay QA tells you what is broken before your users do
Jul 2026 · qa.replay.io · its alternatives →
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Collaboratively browse and navigate your digital channels with your customers in real time. Book a demo or kickoff a free technical proof-of-concept today.
2018 · cobrowse.io · its alternatives →
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UserTesters.io▲322Earn money for testing websites, right from your couch.
2018 · 123b.global · its alternatives →
- 15
Nobody understands CORS, except this one magical web page
2020 · httptoolkit.com · its alternatives →
- 16CA
I usually build web games in C++, but using Emscripten always felt like overkill for what I was doing. I don't need full POSIX emulation or a massive standard library just to render some stuff to a canvas and handle basic UI. The main thing I wanted to solve was the JS/WASM interop bottleneck. Instead of using the standard glue code for every call, I moved everything to a Shared Memory architecture using Command and Event buffers. The way it works is that I batch all the instructions in WASM and then just send a single "flush" signal to JS. The JS side then reads everything directly out…
Jan 2026 · its alternatives →
- 17AW
2019 · webtest.app · its alternatives →
- 18WV
Build an API on top of any existing website or find an API for a site that you need
2017 · wrapapi.com · its alternatives →
- 19
a client-side CMS for editing GitHub Markdown (and other) files - fiatjaf/coisas
2017 · github.com · its alternatives →
- 20
Preflight 2.0▲127Automated UI testing for your Websites & Web Apps
2020 · preflight.com · its alternatives →
- 21
Portal▲181Hey HN, I'm Zach, founder of Portal. Portal lets you share a live sandbox browser session as a link. Try it here: https://www.makeportals.com/try Instead of asking someone to sign up, install software, or book a demo for user research, onboarding, or sales, you send a link and they interact with the real product in a sandboxed browser environment, then you get session replays. Each viewer gets a fresh remote browser instance that starts from a defined state (URL, cookies, extensions, local files, etc). Sessions are isolated and expire automatically. The sessions have…
Feb 2026 · makeportals.com · its alternatives →
- 22SA
2013 · browser-details.com · its alternatives →
- 23
Hi HN — solo developer here. I built this tool ~4 years ago purely to solve my own frustration with CORS and repeated proxy setup. The idea was intentionally boring: just prefix a URL and get control over the request and response. Somehow it grew to serving billions of requests per day, including usage by companies and universities. I’m sharing it here mainly to: - get technical feedback - learn what people would actually use a proxy like this for - understand what I should simplify or remove
Feb 2026 · corsproxy.io · its alternatives →
- 24TP
2011 · httpposttool.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 →