DEVONthink Alternatives for Android

Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor.

Powerful knowledge base that works on top of a local folder of plain text Markdown files.

With so many tools, it's hard to keep everyone on the same page. Notion is a new tool that unifies them all.

Capture inspiration from Pinterest, YouTube or web pages, organize ideas in one place and add your notes. Make mood boards or quick sketches to visualize and present ideas!.

Online Notebook application: Zoho Notebook lets you combine text, images, audio, video, RSS feeds, documents and much more.

A productivity and task management tool appropriate for both individuals and businesses. With Nimbus Note users can create notes and to-do lists, share them with others, and archive important data.

Notezilla is the leading sticky notes app for Windows, Android, iPhone/iPad and the web. Set reminders to sticky notes, Pin sticky notes, attach them to websites, docs & folders, sync between PCs and other devices, organize using folders and tags.

The note-taking app with robust Markdown editor, supporting macOS, Windows, and Linux. This app is designed to be the most convenient way to make notes in Markdown for your daily hacking.

SiYuan is a desktop Markdown Block-Reference and Bidirectional-Link note-taking application.

Organize your research papers in a Gmail-like web app, sync your PDFs to Google Drive and cite your references in Google Docs.