Notan: Grade Calculator
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NotanIzer
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Notion - notes, docs, tasks
Notion Labs, Inc.
Notein:手寫筆記,筆記,PDF註釋
ORION STUDIO PTE. LTD
Zalo
Zalo Group
Microsoft OneNote:儲存構想和整理筆記
Microsoft Corporation
Evernote - 記事整理工具
Evernote Corporation
概念 - 素描、筆記和畫圖
TopHatch, Inc.
ColorNote - 彩色筆記 記事本 便箋 便條 便簽
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HiPaint-素描 繪畫 插畫 & 漫畫
Aige