Ciphernote is described as 'full-featured, cross-platform note-taking application that protects your data through zero-knowledge, client-side encryption in addition to automatic cloud-based cross-device synchronization' and is an app in the Office & Productivity category. There are more than 100 alternatives to Ciphernote for a variety of platforms, including Windows, Mac, Android, Online / Web-based and iPhone. The best alternative is Joplin, which is both free and Open Source. Other great apps like Ciphernote are Standard Notes (Freemium, Open Source), Google Keep (Free), Microsoft OneNote (Freemium) and Evernote (Freemium).
EagleFiler makes managing your information easy. It lets you archive and search mail, Web pages, PDF files, word processing documents, images, and more. Use it to collect information from a variety of sources. Browse different types of files using a standard three-pane interface.
Diaro is designed to record your activities, daily events, appointments, experiences, thoughts, secrets and ideas throughout the day and sync data across all your devices. It is the easiest and most secure way to keep a diary.
Notebooks allows you to create as many books as you need. Notebooks stores and displays almost any type of document: plain text and formatted text, PDF, web pages, MS Office or iWork documents, photos, videos, music and much more.
Wheatt is an online bookmarking tool that allows you to to quickly save links, and then search them in every useful way imaginable, in any combination. For example, you can find a link that is tagged "programming", where the page contains the text "ruby".
PNotes (Pinned Notes or Portable Notes, use what you prefer) is written entirely in C and Windows API (with Pelles C for Windows IDE) - so it is fast and light-weight. It has flexible settings - both for the program in whole and for individual note.
Momento is a unique diary/journal writing app for iPhone & iPod touch, which provides a quick and easy way to record moments throughout your day. Connect with popular social web services, such as Twitter, Facebook, Flickr and Last.