If you use Wine, there is a nifty free (Windows) app called Resophnotes that syncs to Simplenote. It also lets you use plain text notes - even with the Simplenote sync, I keep mine in Dropbox to make use of it's file versioning - and edit them using Sublime. It has Markdown support too. I can then run Pandoc from within Sublime to convert files to .docx format for those "lesser types" that prefer their documents that way. If you run an Android (my app of choice is Flicknote) or an iphone you can then sync these with your phone.
Another app I find really useful is Autohotkey - it should run under Wine or have a look at github.com/polyethene/IronAHK
I use it for various things, including expanding various text snippets....useful for email addresses or canned forum sigs!
What saves me loads of time is the following which I use as a hotkey to give focus to Sublime (it will also minimize it) but you could apply it to any app
WinGet, winid, ID, %TheWindowTitle%
DllCall("SwitchToThisWindow", "UInt", winid, "UInt", 1)
; Give focus to Sublime Text and maximize the window: Ctrl-Shift-/
I also have my Capslock as a general minimize key (applying shift with it makes it work as a "normal" caps lock)
;turns Capslock key into a dedicated minimize key for the app that has focus
..or if I want to make an(y) app stay on top:
;always on top Win + t
t:: Winset, Alwaysontop, , A