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  • Hobby macOS developer/designer
  • Researcher, PhD in Human Sciences
  • Developer of CotEditor
  • Organizer of the macOS native study group


  • native macOS application design
  • AppKit, SwiftUI, TextKit
  • icon drawing


CotEditor Gapplin Qli



  1. Lightweight Plain-Text Editor for macOS

    Swift 4.8k 369

  2. GzipSwift Public

    Swift framework that enables gzip/gunzip Data using zlib

    Swift 429 102

  3. WFColorCode Public

    NSColor extension adding ability to handle HSL color space and CSS3 style color codes

    Swift 22 9

  4. Convert coordinates in a picture to the real world based on multiple reference points in the picture.

    Python 18 2

1,424 contributions in the last year

Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Mon Wed Fri
Activity overview

Contribution activity

August 2022

Reviewed 2 pull requests in 1 repository

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