Curio Notes is described as 'Curio is an innovative and visual application for brainstorming, notetaking, and project management' and is a Note-taking tool in the office & productivity category. There are more than 50 alternatives to Curio Notes for a variety of platforms, including Windows, Mac, Linux, iPhone and iPad apps. The best Curio Notes alternative is Notesnook, which is both free and Open Source. Other great apps like Curio Notes are Zim, Trilium Notes, CherryTree and Cryptee.
VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts. Such maps can help you to improve your creativity and effectivity. You can use them for time management, to organize tasks, to get an overview over complex contexts, to sort your ideas etc.
Passfindr is a web based premium Personal knowledge base, Password manager and Bookmark manager application to securely store passwords and other sensitive information in a virtual vault locked with individual master passwords.
OmniGraffle can help you make eye-popping graphic documents—quickly—by providing powerful styling tools, keeping lines connected to shapes even when they’re moved, and magically organizing diagrams with just one click.
WizNote is a Note software, which is especially designed for Internet users and mobile Internet users. WizNote focuses more on notes of rapid collection, management, reading and sharing. WizNote is smaller, more stable, and more suitable for computers, phones and mobile devices.
Privacy oriented, without vendor lock in note organizer, todo list desktop application. Work offline with text, markdown and pdf files.
MyInfo is a personal information manager for Windows. It will help you capture, organize, edit and share ideas, documents, tasks, and web pages.
Take beautiful handwritten notes or annotate PDFs on your iPad, and now even on your iPhone. With the new Noteshelf you can do all of the familiar, like type notes, record audio, draw shapes, sketch, sign contracts, fill forms, along with a lot of new, like add bookmarks, create...
This application provides as many baskets as you wish, and you can drag and drop.
A simplified, RedNotebook-type journal/diary app. With a focus on minimal design and a distraction free writing environment. Makes a folder full of dated text files that are easy to access even without the journal program.
End-to-encrypted, laser-focussed yet elegant editor. No registration, no login, no ads, no tracking, no hassle. Just write. In private or together with others.
myBase is a unique free-form database software that allows entry of unstructured text, webpages, images, documents, emails and even arbitrary files without regard to length or format. All information is automatically compressed and stored in the tree structured outline form.
A new medium for your ideas—augment your thinking with a text editor designed for structuring lists. Side-by-side views allow 3 modes of thinking.
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It covers many of the diagramming aspects well (is in fact more powerful than Curio in this respect). Not so good in the free-form note taking though.