Chars is a delightful and easy-to-use note-taking app for quickly writing down your thoughts. Then sharing, tweeting, or using them the way you want.
Also there is built-in special characters keyboard working inside the app or as system-wide keyboard extension.
NoteConnect is a note-taking app for everyone, from students to programmers, where you can create multiple notes in a notebook and illustrate their relationship by drawing links from note to note.
Write notes, wikis, and to-do lists in a light, clean, and speedy interface. Organize with hierarchies and tags, and find anything with quick search. Share to collaborate in real time with friends and co-workers.
Perixi is a desktop app designed from the ground up to make it easier to plan your story. Whether you're an author, world-builder, or someone who likes creating, Perixi is designed to bring wiki-like links, images, and markdown-like editing to your process.