DEVONthink Alternatives for Mac

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.

Zotero is a free, easy-to-use tool to help you collect, organize, share research and cite your research sources directly in your favourite word processor, with 300 MB free online storage.

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!.

Zim brings the concept of a wiki to your desktop. Store information, link pages and edit with WYSISYG markup or directly typing some lightweight markup syntax and see it previewed as-you-type.

Trilium Notes is a hierarchical note taking application.

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

Dendron is an open-source, local-first, markdown-based, note-taking tool built on top of VSCode. It supports all the usual features you would expect like tagging, backlinks, a graph view, split panes, and so forth.

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.