Janus Notes 2 is described as 'Janus Notes is an open source note taking program for OSX that seriously respect your right to privacy. A companion app for iPhone and iPad allows you to have your notes always with you' and is a Note-taking App in the Office & Productivity category. There are more than 50 alternatives to Janus Notes 2 for a variety of platforms, including Windows, Mac, Android, iPhone and iPad. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Microsoft OneNote. Other great apps like Janus Notes 2 are Evernote (Freemium), Simplenote (Free, Open Source), CherryTree (Free, Open Source) and NoteLedge (Paid).
WizNote is a Note software, which is especially designed for Internet users and mobile Internet users. WizNote focuses more on notes of rapid collection, management, reading and sharing. WizNote is smaller, more stable, and more suitable for computers, phones and mobile devices.
Notational Velocity is a mouseless application for storing and retrieving notes. With Notational Velocity, searching for notes is not a separate action; rather, it is the primary interface. Searching encompasses all notes content and occurs instantly with each key pressed.
NixNote, formerly Nevernote, is an open source client for Evernote . It is written in Java so it will also run on Windows & OS-X, but the primary focus has been to try and get a usable environment for Linux.