NoLedge - Note taker and knowledge database, serve as an academic or general notebook. This open-source freeware is designed to serve as an academic or general notebook. It includes a simple and (hopefully) user-friendly interface and allows the creation of "notes", similar to articles in Wikis. It is also meant to be used as a reference management software, and further version will include more bibliography features.

NoLedge Features:
1. Tracking of complete references using a format similar and compatible with the BibTeX format
2. Ability to subdivise your notes and to include them in other notes
3. Hierarchical tagging of notes allowing many-to-many relationships
4. Two way linking of notes through "relations"
5. Hyperlinking of external URL and linking between internal notes
6. Automatic tracking of the date of last modification & daily history of modifications
7. LaTeX equation rendering
8. Advanced search
9. Formatting (limited to the basics to avoid needless crowding of the users interface)
10. Minimal table & image support
11. Statistics on database usage

How to use:
First, you need to understand the concept of the program. "Notes" are the basic element, and can be refered to by one or more "Titles". You create a new note by clicking the "Add Note" button on the top left corner of the window and by entering a new title, or simply by entering a new title in the main title box (just to the right of the "Add Note" button) and pressing the "Enter" key on your keyboard.

The license of this software is Free, you can free download and free use this information management software.