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@coteditor @ptsg
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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

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  1. coteditor/CotEditor coteditor/CotEditor Public

    Lightweight Plain-Text Editor for macOS

    Swift 6.2k 429

  2. GzipSwift GzipSwift Public

    Swift package that enables gzip/gunzip Data using zlib

    Swift 523 127

  3. WFColorCode WFColorCode Public

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

    Swift 26 9

  4. LensCalibrator LensCalibrator Public

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

    Python 22 2