ElWiki is a tool to store notes and lists connected by links. It uses wiki language to format notes. Therefor it could be called personal wiki.
ElWiki has android and desktop version for Windows and Linux. Both versions store theirs data in simple text files so you can use DropBox (and DropSync on android) or any other cloud drive to synchronize your data.
Some unique features
* easy to use * you can put checkbox into a text or list * easy adding items to lists * desktop version – you can have same notes on your computer and phone
Personally, I use it for my todo list, notes on projects, notes from books, shopping list, for writing ideas and many other types of lists and notes.