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What is Liii STEM
Liii STEM Suite is a beginner-friendly, all-in-one AI-integrated scientific writing platform for STEM professionals.
Core Features
🔥 AI-Powered Writing Assistant
Liii STEM integrates multiple mainstream large language models to provide intelligent writing assistance, automated proofs, and calculations. The built-in AI can interact directly with your rendered content, including mathematics and code.
👉 Install AI Integration Features | AI Integration Usage Guide
✨ Magic Paste
Directly paste content from web pages, PDFs, or even handwritten materials into Liii STEM while automatically preserving all formatting including formulas, tables, and references - and it's all editable!
🚀 100x Faster Formula Editing
What-You-See-Is-What-You-Get (WYSIWYG) editing with intuitive keyboard shortcuts. Achieve LaTeX-level typesetting effects without the complexity.
📚 Smart Cross-Referencing
Automatic numbering and cross-referencing for figures, tables, formulas, sections, and bibliography with bidirectional linking.
👉 Figure Numbering | Table Numbering | Formula Numbering | Section Numbering | Bibliography
🔧 Built-in Environments
Pre-configured environments for theorems, proofs, definitions, and more - no need to define them yourself like in LaTeX.
📁 Multi-Format Support
Native TMU format with full LaTeX/BibTeX compatibility for bidirectional conversion, plus one-click precise Word document export.
Technical Foundation
Liii STEM Suite is built on GNU TeXmacs, a scientific writing platform with nearly thirty years of development history. We've fixed numerous bugs and improved operational efficiency while adding cutting-edge AI features.
Getting Started
New to Scientific Writing?
Start with our comprehensive video tutorial: Zero-based Scientific Writing Guide
Coming from LaTeX?
See how Liii STEM compares and can accelerate your workflow: Liii STEM vs LaTeX
Quick Installation
Advanced Features
Structured Search and Replace
Advanced pattern matching for efficient document editing and formatting.
👉 Structured Search and Replace Guide
Latest Updates
Stay up-to-date with new features and improvements.
Community Edition
We also maintain Mogan (墨干), a free, community-oriented scientific writing platform that includes many of Liii STEM's features, except for AI integration and advanced OCR capabilities.
Summary Table
| Liii STEM | GNU TeXmacs | Mogan | |
|---|---|---|---|
| Release Cycle | Customizable, rapid iteration based on user needs | Unfixed | At least one version per month |
| AI Integration | Yes | No | No |
| Magic Paste Support | Supports DeepSeek, ChatGPT, Zhihu, Doubao, etc. | Not supported | Only supports DeepSeek |
| OCR Handwriting/PDF Support | To be released | Not supported | Not supported |
| Open Source | Semi-open source | Fully open source | Fully open source |
| Pricing | Paid | Free | Free |
| Performance | Extremely fast | Slow | Fast |
| UI Style | Modern style | Retro style | Modern style |
| Keyboard Shortcuts | Most work normally | Some unusable | Most work normally |
| Scheme Engine | Liii Scheme | GNU Guile 1.8.x | Goldfish Scheme |
| Lead | Liii Network | Joris van der Hoeven (Mathematician) | Liii Network Founder |
Ready to transform your scientific writing experience? Choose your installation guide above and start exploring the powerful features of Liii STEM!