Unfortunately I haven't come accross anything like Stickies on OS X.
I'm writing this in the hope a Mac developer researching the topic sees an opportunity.
Features from Stickies that I am missing:
- Toggle Stickies on and off with a global keyboard shortcut.
- I don't want to go through the Dashboard, I want Stickies to pop on my desktop on command!
- Set an alarm for any Sticky. Awesome for reminders, or daily tasks. The Sticky note goes to "sleep" (it hides) and will pop on your desktop at the required time. You can even have it play a sound and animate!
- Simple auto formatting of links. You can drag the browser's uri to a Stickies. You can click links in Stickies to open in browser. Great for keeping lists of articles to read (why would I create a new online account, or use a browser extension when I can freely edit my list anyway I want? Not to mention it is saved somewhere on my harddrive that I can easily read without the application running, and backup).
- If the text gets long, a scrollbar appears. You can choose how much screen estate to use for your Stickies.
- You can easily set the title of the Stickies.
- You can manage the Stickies, hide ones you don't want to see now, and bring them back later. So in effect it also works as a small notes database, but it is primarily a great scratchpad.
- Being able to hide a Stickies is great because sometimes you may want to keep a Stickies visible while working on something, and you might want to hide others which get in the way.
- Stickies had awesome shortcuts like: bring back all "hidden" stickies in view.
- They were not as pretty as OS X Stickies, but you could set transparency and colours freely.
In general I find Mac apps to be superior in usability and looks, but this is one type of app where nearly every attempt I've seen on OS X veers towards "personal wiki" (too much), or online synching (don't need), or just plain clunky (dashboard widget).
I used Stickies on Windows for YEARS. I would totally pay 20 € or more for that on OS X.