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Easchi

Where Privacy Meets Scientific Learning

A local-first, highly encrypted note-taking application powered by advanced FSRS flashcards and an offline copyright-protected teaching framework.

Comprehensive Feature Ecosystem

Everything you need for knowledge management, local privacy, and course delivery.

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Simulated Markdown

Type with Markdown syntax shortcuts natively mapped into a robust rich HTML core. Supports mindmaps, canvas sketches, and PDF annotations smoothly.

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Bi-Directional Graph

Build an interconnected second brain with multi-workspace support, backlinks, outlines, and localized inline tag placements driven by SQLite.

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UUID v7 Master Cipher

True zero-knowledge privacy. Derive heavy encryption keys directly from your password locally. Encrypt files or completely mask file trees safely.

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FSRS Spaced Repetition

Go beyond basic Anki cards. Create Cloze deletions, Image Occlusions, and advanced multi-choice exams optimized seamlessly using local FSRS algorithms.

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Teacher Kit & Offline Distribution

Empower educators with specialized offline distribution workflows. Pack courseware securely with custom passwords and strict validity dates completely without any infrastructure leaks.

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Cloud-Auth Packs & DMCA Compliance

Protect intellectual property with Cloud-Auth Packs. Generate dynamic, revocable network keys coupled with offline locks and active content risk mitigation layers.

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Git-Like Staging & Diff Engines

Track modifications granularly. Execute Stage Original before triggering heavy LLM revision tasks, and toggle full visual side-by-side snapshot comparisons flawlessly.

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Site Composer (Zero-Risk Publishing)

An advanced localized alternative to Obsidian Publish. Compose responsive web components via drag-and-drop. Exports pure, raw static pages for independent zero-cost deployment.

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Air-Gapped AI Integration (Local LLM Orchestration)

Connect seamlessly to local offline AI engines via Ollama or WebNN frameworks. Summarize heavy documents, extract interactive FSRS flashcards, and expand deep learning materials with absolute zero data leakage to external cloud servers.

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Zero-Knowledge P2P Cross-Device Crypt-Sync

Synchronize your multi-workspace encrypted vaults directly between desktop, tablet, and mobile operating systems using a highly secure peer-to-peer transport layer. No central proxy or storage server ever reads your master keys or content.