An online/offline notebook designed with developers in mind. Implemented as a CLI tool, a browser plugin, a webapp, and an IDE plugin. Everything is encrypted with AES-256. All instances are synched automatically. Cross-platform. Uses SQLite as its back end.
LastPass users can add documents, PDF files, and images as attachments to Secure Notes . If there are files that you want to keep that shouldn’t be stored unencrypted on your machine or that need to be portable, then LastPass is the place to back them up.
BeepBox is an online chiptune tracker written in flash. You can interactively edit patterns or enter single notes on a piano style keyboard. It makes it very easy to compose music - it manages scales, keys, tempo, and rhythm for you. It also has a waveform editor with which you can define new instruments. Download your work as .wav files. Seems to use Amiga .mod style patterns. You can also download the applet to open later in a web browser or clone the sourcecode (https://bitbucket.org/shaktool/beepbox) if you want to tinker with it or incorporate it into your own work.
Personal bookmark service. Does not use a database. Can be run entirely privately. Has an API and a full-text search function. Very simple to use. Also lends itself to snippets, note taking, comments, hashtags. Offers RSS and ATOM feeds.