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SuJi

Your private AI · second brain

Note one line, let AI do the rest.

SuJi
To-do#work

Sync with the team at 3pm

Idea#idea

Use AI to outline scattered thoughts

Event#schedule

Fri · product review

Note one line, AI does the rest…
Why

Ideas are fast, information is endless

The thought you meant to keep slips through your fingers; the note you saved is nowhere to be found. You don't need another folder — you need a second brain that thinks.

New · SuJi
  1. One line — typed or spoken

    Say it or type it the moment it arrives. No sorting, no naming, no breaking your flow. Capturing a thought should feel this effortless.

  2. Auto-sorted, auto-tagged

    In the background, AI turns each line into a note / to-do / schedule item and adds the right tags. Clutter lands; order arrives on its own.

  3. Answers with traceable sources

    Ask your own knowledge base in plain language. Every answer cites where it came from — you can always trace the root.

  4. A local model, not a third-party cloud

    Powered by an on-device large model — your data needn't leave for someone else's cloud. Your second brain belongs to you alone.

Instant save

Stored the moment you write

Voice input

One spoken line beats ten keystrokes

Smart search

Keyword + semantic, double hit

Everywhere

Desktop and phone, always with you

Be among the first to own a second brain

Beta is open, places are limited.

Get early access
Open source · intelligent structural design

structdesign

Accurate · Easy · Affordable & safe

Engineering-grade intelligent structural design software: import drawings / model in natural language → automatic analysis (frame FEM + response spectrum + CQC + P-Δ) → automatic rebar & section optimization → one-click construction drawings and a professional calculation report. The UI mirrors CAD / YJK, so structural engineers migrate at almost zero cost.

Open source · Apache-2.0219 validation tests, all passingLocal & offline · data stays inFEM + response-spectrum CQC + P-Δ

Engineering you can see

3D solid model · auto-detects slab openings / stairs / basement
3D solid model · auto-detects slab openings / stairs / basement
Rebar plan · column / wall / beam schedules + in-place notation
Rebar plan · column / wall / beam schedules + in-place notation
Member utilization map · spot the weak points at a glance
Member utilization map · spot the weak points at a glance
Foundation plan · isolated / strip / raft / pile + auto selection
Foundation plan · isolated / strip / raft / pile + auto selection

Accurate

Code formula first, FEM where no formula exists, every decision logged; each feature is “examined” against a closed-form solution or a conservation law before it ships — 219 validation tests, all passing. Built on GB 50010 / 50011 / 50009 / JGJ 3 / GB 50017, with regional standards.

Easy

The UI mirrors AutoCAD / YJK, so veteran engineers barely need to learn it; import DWG/DXF and members are recognized by layer, pick a trial style and sections auto-iterate — meeting code while saving material, drawings in one click.

Affordable & safe

Open source and free — commercial structural tools run into tens of thousands a year per node; everything runs fully local and offline, models and drawings never touch the cloud, no dongle, works with the network unplugged, project data stays in-house.

Built-in AI assistant · one sentence, applied on the spot

Give commands in plain language and the software changes the model, the loads and the design rules at once — analysis and drawings update in sync. Offline Chinese intent parsing is built in; add an API key to upgrade to an LLM dialog.

All slabs on the standard floor: dead load 5, live load 2
Enlarge every window by 200 from the center
Take the envelope for beam longitudinal rebar
Switch to the Beijing regional code
01Import / model
02Analyze · spectrum / P-Δ
03Auto rebar & optimize
04Drawings + calc report

Scheme / preliminary-design depth; simplifications (rigid diaphragm, equivalent wide column, etc.) are stated honestly in the calculation report, and final drawings must be reviewed and stamped by a licensed structural engineer.

Also from us

Kanji Drop

Learn Japanese kanji, by playing

Turns Japanese kanji into a relaxed falling game — learn in spare moments, and remember for longer.

  • Japanese kanji
  • Falling-blocks game
  • Play anytime
Kanji Drop WeChat Mini Program
WeChat Mini Program · Scan with WeChat to play
Open source · Ops

EcoMonitor

Keep every field device online

A comprehensive video-device management & network-operations tool — device discovery, multi-channel live preview, recording retrieval, network diagnostics and device debugging. The “last mile” of ecological monitoring.

  • Device discovery & management
  • Multi-channel live preview
  • Batch recording retrieval
  • Network diagnostics & debugging
View on GitHub
EcoMonitor
live
IPC-01
1080p · 24fps
NVR-02
16ch · 28°C
IPC-07
reconnect…
GW-01
↑ 42ms
network · throughputping 12ms · 0% loss
Open source · Desktop app

aima 合間

Learn a language in the gaps while your AI works

A tiny always-on-top Windows panel: while your AI coding assistant (Claude Code / Kimi) is busy, it drills you with flashcards; when the agent needs you, a full-screen chime calls you back. It also works fully standalone — a complete FSRS spaced-repetition vocabulary & reading app.

Open source · MITWindows 10/11 · portableFSRS spaced repetition中文 / EN interface

Gap learning you can see

Always-on-top panel · cards appear while the agent works
Always-on-top panel · cards appear while the agent works
Listening quiz · a wrong answer replays the right one
Listening quiz · a wrong answer replays the right one
Sentence card · whole-sentence recall + pitch badges
Sentence card · whole-sentence recall + pitch badges
Line-by-line reading · re-surfaces on schedule
Line-by-line reading · re-surfaces on schedule

Gap-driven

It understands agent hook events: busy → flashcards; input needed → red full-screen chime; task done → green. Gaps get used, flow stays intact — without hooks it's a quiet standalone review app.

Memory, scientifically

FSRS scheduling brings each card back right before you forget; reading, listening-quiz and sentence cards reinforce one another; line-by-line graded reading with audio re-surfaces organically on interval.

Open & extensible

Fully open source; import any Anki .apkg deck, toggle word and reading sources, filter JLPT N5–N1 — you define what you learn.

Born for AI coding assistants

One-click hook installation for Claude Code / Kimi: dropped events replay automatically, state changes are felt instantly. For the first time, the agent's rhythm and yours are in sync.

One-click Claude Code hooks
Auto-merges Kimi config.toml
Dropped events auto-replay
Red / green full-screen recall + chime
GitHub

Windows desktop only for now; the built-in decks focus on Japanese (JLPT), and any Anki deck can be imported.