SCRIBZEE®
HAMELIN SAS
Squid: Take Notes, Markup PDFs
Steadfast Innovation, LLC
Notewise - 手写笔记 & PDF
Notewise
Notebook - 记录记事,同步
Zoho Corporation
Evernote - 笔记管理专家
Evernote Corporation
Microsoft OneNote:保存创意和整理笔记
Microsoft Corporation
Google Keep - 记事和清单
Google LLC
Notein- 手写笔记&PDF编辑器
ORION STUDIO PTE. LTD
Samsung Notes
Samsung Electronics Co., Ltd.
Notion - notes, docs, tasks
Notion Labs, Inc.