100% local, air-gapped document AI for investigative journalists. Built in one week by a non-coder using only free-tier AIs. No cloud, no uploads, no bullshit.
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Joined November 2025
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I'm no dev. I can't even read code.
I have NO idea what I'm doing.
Last week I found out journalists have to upload sensitive data leaks to use investigative tools, and they have to pay for it, and that sucks.
So I built an AI dev team to build a 100% local, 100% free version.
If you were handed an important data leak that you needed to analyze without exposing the data to the cloud, what features would you want your analysis toolkit to have?
AI and mass manufacturing are the same revolution. Mass manufacturing doesn't produce superior results - it produces acceptable results with an acceptable ratio of defects. No one expects a mass-produced factory-stamped product to be superior; they expect it to be fast and cheap.
I made my platform using AI to write all the code. Should I highlight that as a good thing, or warn about it as a bad thing or just not mention it at all because it doesn't matter?
Just dropped the v2.0 of ArkhamMirror - SHATTERED. ArkhamMirror is now built as a lightweight frame with 25 shards, focused on Journalistm and OSINT.
github at
mantisfury/ArkhamMirror: Local-first AI-powered document intelligence platform for investigative journalism
I'm creating tools to democratize intelligence. Anyone interested in free tools that use three-letter-agency techniques to help you analyze data and make decisions? @gijn @sentdefender @AnthropicAI
AI coders out here proving that managers/directors/architects really DO matter in the creative process.
Do you think when the camera was new people would make fun of all of the bad pictures people took to make themselves feel better about using a pencil or paintbrush to make pictures?
If you didn't need to make money from your project and you weren't trying to build or pad your portfolio, what would you be building? Anything?
How long before people start advertising their apps as made with "Handcrafted, Artisanal Code" for the anti-AI crowd?
Fully functional Analysis of Competing Hypotheses (ACH) tool now available to use directly in your browser.
ArkhamMirror ACH - Analysis of Competing Hypotheses
Give it a spin, make the CIA jealous. (They can use it too I guess)
Working on some big changes - thank you everyone for your support so far! The fully guided and AI-assisted ACH addon was much more popular than I thought it might be!
mantisfury/ArkhamMirror: Local-first AI-powered document intelligence platform for investigative journalism
Anyone use ACH (Analysis of Competing Hypotheses)? I made a new tool for it, so I hope so. Fully guided, AI-assisted, fully local, and even generates a PDF report. Will add to my repo soon. Intelligence is for everyone.
@OsintCurious @bellingcat @ICIJorg @IntelTechniques @gijn
No one knows yet, but there's a new OSINT tool in town.
Offline RAG
Contradiction Detection
Knowledge Graphs
Vision AI table extraction
100% local, MIT license
mantisfury/ArkhamMirror: Local-first AI-powered document intelligence platform for investigative journalism
ArkhamMirror v1.0 is live: Contradiction Detection, Authorship Unmasking, Semantic RAG. Offline. Private. Free. Open Source.
mantisfury/ArkhamMirror: Local-first AI-powered document intelligence platform for investigative journalism
@bellingcat @ICIJorg @GJinthebay @OsintCurious
youtu.be/HcjcKnEzPww
I made Palantir Gotham for the People with $0 and No Coding Skills (So can you) - ArkhamMirror
youtu.be/HcjcKnEzPww
6 minute deep dive video (AI generated podcast style with illustrations) just dropped to explain what this is and why you should care.