Gantt Studio
Drag a schedule into place, draw dependencies and see the critical path. Switch to Mermaid text without losing the plan. Everything stays in your browser.
Try it (opens in a new tab)Taipei, Taiwan · shipping since 2018
Nat Lee
I build systems that do the work, and tools worth opening twice.
Backend engineering, data platforms and forecasting. From Japan’s electricity market to open-source tools you can try right here.
$ cat now.txt
building power-trading systems for Japan's electricity market: market and weather data pipelines, bidding tools, spot-price forecasts.
- Projects
- 46
- Live demos
- 11
Flagship project
Telepy
Reach every device from your browser.
One outbound reverse SSH tunnel per device gives you a browser terminal, files, remote desktop, a remote browser and the LAN behind it. No port forwarding, no VPN, no public IP.
- Device connect to online (Django: 2.90 s)
- 0.16 s
- Idle memory (Django: 329 MiB)
- 20 MiB
- Backend cold start (Django: 14.2 s)
- 0.7 s
- 1,340+ commits since 2024
- v2.13
Open in your browser
Less reading. More trying.
Plan a project, explore a map, label an image or guess a little sarcasm. These projects are live; pick one and have a go.
Word Net
Read a sentence, cast a net on the sad-to-happy scale and reveal its reference score. Five modes, including daily challenges and two-player games.
Try it (opens in a new tab)
Taiwan Population Atlas
Play through population change across Taiwan’s 22 counties, compare their trends and explore household income. A 2017 hackathon project, rebuilt in 2026.
Try it (opens in a new tab)
morphkit
Converts and edits images, audio, video and GIFs entirely in the browser. Nothing gets uploaded, mostly because there is nowhere to upload it to.
Try it (opens in a new tab)
simply-blur-detector
Drop in a picture and compare a small Keras CNN with Laplacian variance, including a window-by-window blur heat map. No upload needed.
Try it (opens in a new tab)
Image Annotation
A keyboard-first bounding-box editor that runs in your browser. Open your own images, label boxes and export JSON, COCO, YOLO or Pascal VOC.
Try it (opens in a new tab)
Selected work
A closer look at infrastructure, streaming, planning, energy forecasting, reinforcement learning and medical imaging.
Infrastructure & backend66 stars on GitHubdev-dock-manager-rust
One Docker dev box per user, with a web terminal, a noVNC desktop and optional GPU. The Django version, rewritten in Rust, partly to find out whether I could.
2026Active
Web apps & extensions77 stars on GitHubStreaming Player
Twitch, YouTube live chat and chat bots share one song queue. A Rust backend keeps the OBS player, overlay and moderator dashboard in sync.
2026Completed- Web apps & extensions11 stars on GitHub
Gantt Studio
Drag a schedule into place, draw dependencies and see the critical path. Switch to Mermaid text without losing the plan. Everything stays in your browser.
2026Completed 
Energy & forecastingSolar Power Prediction System
Time-series models that forecast solar output for an energy-storage demonstration site, scheduled with Airflow. The sun is punctual; the clouds are the problem. The repository is private, so the dashboards here are redrawn on simulated data.
2023Completed
AI, vision & medical imaging33 stars on GitHubQWOP with PPO
A PyTorch PPO agent plays the real QWOP browser game through Playwright. Six evaluation races, six 100 m finishes. Grace was not part of the reward function.
2019Completed
AI, vision & medical imaging4040 stars on GitHubBrain MRI Pipeline
An end-to-end Nipype pipeline with FSL FAST, K-means and ANTs Atropos segmentation, tissue volumes, bias-correction metrics and an interactive 3D brain.
2018Completed
Open source
Fixes I sent upstream, and packages other people install.
Upstream contributions
jeanp413/open-remote-ssh (opens in a new tab)8 merged PRs
8 merged PRs, including the host list in Connect to Host, known_hosts verification and ProxyJump fixes.
Eugeny/russh (opens in a new tab)Merged PR
Fixed Dropbear client connections to russh servers under strict key exchange by accounting for an ignored guessed packet.
serengil/deepface (opens in a new tab)Merged PR
Batch age and gender prediction.
tensorflow/models (opens in a new tab)Merged PR
Compatibility fixes for newer TensorFlow and Python 3.
nipy/nipype (opens in a new tab)Merged PR
A docs fix in the example code.
Packages on PyPI
BlurGenerator7070 stars on GitHub
Motion, lens, Gaussian and depth-aware blur for making blurry training data.
HEIC2PNG2626 stars on GitHub
Turn iPhone HEIC photos into PNG from the CLI, a shell pipe or Python.
FisheyeWarping1616 stars on GitHub
Dewarp top-down fisheye images to panoramas and back.
EagleWrapper88 stars on GitHub
A Python wrapper for the Eagle image manager's API.
ShowSys (opens in a new tab)66 stars on GitHub
Print system information from Python or the shell.
django-simple-third-party-jwt (opens in a new tab)22 stars on GitHub
Third-party login and JWT in one Django app.
django-simple-api-proxy (opens in a new tab)55 stars on GitHub
Proxy any API through a Django server.
Where I've been
Four rooms so far. Each one taught me something the next one needed, usually the hard way.
2018 – 2019
Crawlers & NLP
First job. Scraped the web, trained language models, learned that regex is a lifestyle.
2019 – 2021
Computer vision
Medical imaging, retail analytics and ads on embedded boards. Stared at a lot of pixels.
2021 – 2023
NLP & data platforms
A sentiment platform over three billion data points. Most of them were complaints.
2023 – now
Energy trading
Solar forecasts first, then power trading for Japan. The weather is now my problem.
How I work
Most of what I build now, I build together with AI coding agents. I decide what to make, how the pieces fit and whether it actually works. The agent writes a lot of the code, and I read every change before it ships.
Daily tools
- Claude Code
- Codex
- Python
- Rust
- TypeScript
Writing
- I just wanted a remote browserA KasmVNC migration war story: seven commits, forty-five tests and several rounds of “this time it really works”. In Chinese.Telepy · 2026(opens in a new tab)
- Benchmarks: Django vs RustTwo backends side by side on the same machine, before and after Telepy's rewrite.Telepy · 2026(opens in a new tab)
- BlogMy long-running personal blog.natlee.github.io/Blog(opens in a new tab)
- MediumTechnical write-ups.@natlee_(opens in a new tab)