Incollector is an application to collect various kinds of information (like notes, conversation logs, quotes, serial numbers, source code, web addresses, words). All the entries can be tagged, so you can find them very easily.

Unit is a modern note-taking app that provides a completely new experience of creating, organizing and managing all your notes.

An android app for writing and storing AES-128 encrypted notes. Supports notes, checklists and even spreadsheets. It is the only app in play store offering multiple security options like password protection, pattern lock and pin lock.

NotesHolder lets you quickly type in any piece of information so that you can easily find it when you need, read it or print it out for your convenience. This is the most effective way to store all your notes without cluttering up your desk with post it notes / sticky notes.

Allo is the online workspace for visual collaboration and teamwork for remote teams. With our interactive and visual workspace teams can collaborate over, notes, design, sketches, tasks, processes, and work.

KJots is a hierarchical note taking application that organizes all of your notes into separate books displayed as tree. Since Plasma 5 KJots isn't part of Kontact anymore.

Inquisite is a note-taking site that makes creating, searching, organizing, and importing/exporting simple and easy

Note yourself is an easy to use message-themed notes app which allows you to save and view notes as if they were chat messages.

Boost your productivity. Take notes, set reminders and save contents and links, all in 1 swipe of the mouse. Attach notes automatically to any window.

A beautiful, uncluttered all-in-one tool. Write, plan, take notes, capture ideas and get organized.

list.it is a simple, free, open-source (MIT-license) note-keeping tool to help you manage the tons of little information bits you need to keep track of each day. Installs as i Firefox add-on.

A beautiful, fast, and simple note taking app in the style of elementary OS