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Footnotes:

Duck would like a word.

Clinical data, useful software, and the occasional laser loon. Made by Fred, with plenty of curiosity.

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Arcade

Arcade ↗
Laser Loon
Quasi-Puzzler
Monkey C Mayhem: Garmin Schvitz App
Clinical Trial Chaos
Trial & Error
Study Director
Retro Labyrinth
Working With Duck
Meme Vault 🔓

Systems

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Designing for My Brother
Under the Hood (Stack)
CRF Studio
Patrol Shift Studio
Proof Workspace
NeuroRecon Studio
Incident Simulator
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Project Notes

Notes from my projects

Occasional notes on what I’m building, what I’m learning, and the bugs that put up a good fight.

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© 2026 Frederick de Ruiter. All rights reserved.

•Logic & Proofs•

Architectural Archetype and Incident Triage Simulator