Notewise - 手写笔记 & PDF
Notewise
Notein- 手写笔记&PDF编辑器
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Jnotes-手写笔记&PDF阅读注释
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Flexcil Notes & PDF Reader
Flexcil Inc.
Notion - notes, docs, tasks
Notion Labs, Inc.
微信读书
Tencent Technology (Shenzhen) Company Ltd.
Squid: Take Notes, Markup PDFs
Steadfast Innovation, LLC
吾绘笔记-有为笔记,手绘,笔记本&记事本&备忘录,画画,手账
DragonNest
Evernote - 笔记管理专家
Evernote Corporation
Microsoft OneNote:保存创意和整理笔记
Microsoft Corporation