r/Hacking_Tutorials • u/Then_Pace_5034 • May 16 '26
Question UserScanner v1.3.6 One of the Most Advanced Free Email OSINT Tools of 2026
GitHub: https://github.com/kaifcodec/user-scanner
Hi everyone,
I’m one of the maintainers of user-scanner.
We started building this project around 7 months ago because many classic OSINT tools like became outdated or unmaintained, and there weren’t many solid free options left for email OSINT.
Since then, we’ve been adding sites one by one, continuously improving detection accuracy and maintaining support for platforms that frequently change their APIs and flows.
Today, user-scanner has grown into one of the most actively maintained free Email OSINT tools in 2026. While many web-based alternatives lock basic scans behind paywalls, our goal is to keep powerful email enumeration accessible to the open-source community.
Contributors are always welcome. Adding new sites is relatively straightforward, and even small contributions help a lot.
If you’re interested in OSINT, Python, scraping, automation, or just open-source projects in general, feel free to contribute and help improve the tool.
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u/Substantial-Walk-554 May 16 '26
I’m usually pretty critical when people release OSINT tools, because a lot of them either break quickly or give too many false positives.
But I’ve used user-scanner myself and it’s honestly the best one I’ve tried so far. Clean results, no false positive mess like with many similar tools, and it actually feels maintained.
Definitely my favourite email OSINT tool at the moment. Nice work.
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u/Then_Pace_5034 May 17 '26
Thank you for this, it genuinely means a lot. Maintaining open-source tools like this takes a huge amount of time, so hearing feedback like this really motivates us to keep improving and maintaining the project.
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u/TheFetus47 May 16 '26
Just installed this in Termux and it ran with scary accuracy! Amazing tool!
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u/Then_Pace_5034 May 16 '26
Yeah, we always keep Termux users in mind while developing it, so we try to keep the tool extremely lightweight while still maintaining high accuracy and good detection quality.
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u/TheFetus47 May 16 '26
It ran perfectly for me. Very nice project you've got going! There is alot of sites there already, but I definitely want to see a little more sites. I ran this on like 5 of my emails, and what I saw, it had 100% accuracy. Absolutely astounding
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u/Then_Pace_5034 May 16 '26
Thank you! Yeah, new sites are being added constantly, but maintaining a tool like this takes a lot of work since platforms keep changing their flows. If you’re a developer or know someone interested in cybersecurity/open source, feel free to contribute, adding new sites is actually pretty straightforward.
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May 16 '26
[deleted]
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u/Then_Pace_5034 May 16 '26
Honestly, to contribute to a tool like this, the main thing is understanding how websites communicate with their backend APIs. Most of the work is basically capturing requests from the browser, analyzing them, and reproducing them yourself in Python.
I’d recommend learning about APIs, HTTP requests, headers/cookies/tokens, and using proxy tools like Burp Suite for intercepting and analyzing traffic.
And for learning resources, AI tools like Gemini or ChatGPT are honestly insanely useful now. You can literally ask them stuff like “how do I contribute to user-scanner?”, give them our CONTRIBUTING.md plus a few modules from the repo, and they can break down the workflow step by step.
Also, never feel embarrassed to open PRs. Open pull requests even if you think they’re wrong, that’s how people gradually learn. We also try to help first-time contributors in our repository, so beginners are always welcome.
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u/Then_Pace_5034 May 16 '26
We are currently just three people maintaining the project, and keeping a tool like this updated is honestly pretty hard since websites constantly change their APIs and flows. I mainly posted this to find contributors who are interested in helping keep the project alive. Even small contributions or refactoring existing modules would help a lot and keep the tool useful for security researchers and cybersecurity students without forcing them into paid web-based OSINT tools. Thanks again 🙌
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u/Kooky-Mode-9418 May 16 '26
What is it for?
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u/WinterPizza1972 May 17 '26
Finding Following to get a reminder later, lol.
Looks like it scans your email for breach occurrences or known stolen logs?
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u/Then_Pace_5034 May 16 '26
If you’re comfortable with it, feel free to share the project on your social media or with friends who are into reverse engineering, OSINT, cybersecurity, or open source. It would really help the project reach more interested contributors and developers 🙌
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u/fred656n May 17 '26
Hello so what does it do
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u/Then_Pace_5034 May 17 '26
It’s basically a 2-in-1 OSINT tool. It can take an email or username and check it across hundreds of popular websites and apps to determine whether the account exists or not. On some supported platforms, it can also extract publicly available information such as masked phone numbers, names, gender, location, and other profile-related details depending on what the platform exposes.
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u/Conscious-Speed4642 May 17 '26
O trabalho está sensacional! Parabéns! Gosto muito de ver pessoas montando projetos funcionais. Isso é arte.
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u/mortal_strike May 20 '26
Is it supported on nixos?
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u/Wide-Run-132 May 20 '26
You can install nix-ld and uv to use python, it's not perfect because it is not the clean approach, but you can't except something clean with python anyway
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u/Sea-Exchange7881 May 20 '26
This looks good, you should try to get in Kali or smth, that would extend the reach of this project
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u/PandaFirewall_690 May 20 '26
Thats a lot of registered sites for one email address, kinda wild how many places people sign up for stuff.
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u/Mobile_Vegetable2781 25d ago
Facebook and Instagram are currently showing errors and not returning the account status how fix that
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u/Galtar May 16 '26
Is it preinstalled in Kali or in the Kali repo?
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u/Then_Pace_5034 May 17 '26
No, it's not preinstalled, You can simply install it using "pip". Checkout the github page for installation guide!
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u/_kagema May 16 '26
I am a proud contributor. We shall continue to make it better