ANGO Note lets you create and read encryption notes for MacOS, Windows and multi language users.
Deep Notes is a simple hierarchical note pad. You can use it to outline ideas, make to-do lists, or whatever else might need jotting down in a list, hierarchical or not.
(commercial) Desktastic lets you take notes, visually demonstrate, draw stupid pictures, and much more!
(commercial) DEVONnote treats websites like 'living' notes, allowing you to both view your favorite sites from within the application and manage your bookmarks like simple documents.
Do It is a small application to manage categorized to do lists. Each to do item can be linked with a file on your computer, a URL, such as the address of a website, or a contact from your address book. The linked item can be opened directly from the Do It window. To do items can also include notes, priorities and deadlines, which can be set as reminders in iCal.
EdenList is an experimental To Do application which demonstrates the usage of tables in Cocoa. It has support for multiple documents, universal binary, and more.
EtreTask is a small, fast, easy-to-use to-do list manager. It is designed not to get in your way.
Frictionless is a to-do list manager in the Getting Things Done style of David Allen. Specifically, it allows you to view your items in both heirarchical form, so that you're encouraged to document "the next action" for all your tasks, and it lets you then slice by the Context needed to do them.
(shareware) iPalmMemo is a conduit and Mac application so you can use your Palm memos on your Mac.
iPod Notes is an application for Mac OS X able to manage the notes of your iPod. iPod Notes let's you create and organize any note you want to have in your iPod. You can paste text in, drag text from other applications, drop it as a text file from the Finder or, of course, write it yourself with the keyboard of your Mac.
(commercial) MA Memo is a tool for controlling information in the text format. It can be used as a memo, an analyzer or an editor.
QueueMemo is simple memo software. The memo which relates when the application being started becomes active is indicated in the characteristics. It surely decides to be seen because it is indicated in the extreme front.
Rappel is an ultra-simple little app that acts like the note pad stuck on the fridge's door.
sfri Tools is a set of applescripts concibed as a helper for some of your daily tasks in Safari.
SketchBox is a Sticky Notes Manager that supports graphical and text notes that can be used as reminders. Notes can be arranged via drag'n'drop in the thumbnail view to create little storyboards or comics.
(commercial) SOHO Notes can be used to capture, organize, and share all of your personal and workgroup information. It can store rich text, PDF's, images, files, movies, audio, bookmarks, and web archives. Synchronize notes between multiple computers, iPod's, and Palm handhelds.
Stick 'Em Up
Stick ?Em Up is a desktop sticky notes application, similar to Apple?s Stickies application which is included in Mac OS X. Stick 'Em Up lets you create notes in different colours and sizes that can contain rich text and graphics. With Stick ?Em Up you group your notes in to categories, only the notes in a selected category are shown on screen.
Stronghold keeps notes and information safe using 448 bit blowfish encryption system.
ToDo is a small application to manage categorized to do lists. Each to do item can be linked with a file on your computer, a URL, such as the address of a website, or a contact from your address book. The linked item can be opened directly from the ToDo window.
(commercial) Yojimbo makes keeping all the small (or even large) bits of information that pour in every day organized and accessible.