Mac OS X Softwares to WYSIWYG Support

RedNotebook is a free and open-source desktop journal and diary application offering a clean interface and features for organizing notes, thoughts, and ideas with a calendar view, tag search, and basic text formatting.

TuxGuitar is a robust, free, open-source tablature editor designed for guitarists, bassists, and drummers. It allows users to create, edit, and play musical scores and tablatures with MIDI support, offering a portable and customizable environment for music composition and learning.

KompoZer is a free and open-source WYSIWYG HTML editor built upon the foundation of the discontinued Nvu project. It provides a visual interface for creating and editing web pages, making web authoring accessible to users without extensive coding knowledge. KompoZer supports core web technologies like HTML and CSS.

Celtx is a comprehensive cloud-based media pre-production software suite designed for writers and producers across various media, including film, TV, stage, games, and comics. It offers integrated tools for scriptwriting, scheduling, budgeting, storyboarding, and collaboration, streamlining the pre-production process from initial concept to final production.

Sweet Home 3D is a comprehensive interior design application that helps users draw house plans, arrange furniture, and visualize their home design in 3D. It caters to individuals and professionals alike, offering a user-friendly interface with powerful features.

Tomboy is a free and open-source desktop note-taking application designed for simplicity and efficiency across Linux, Unix, Windows, and macOS. It utilizes a wiki-like interface for easy linking between notes and offers features like automatic linking, full-text search, and local storage, making it an accessible and reliable tool for organizing your thoughts and tasks.

Adobe Dreamweaver is a powerful web development tool offering both visual design and code editing capabilities. It supports various web technologies and protocols, including HTML, CSS, JavaScript, FTP, and SFTP, making it suitable for creating and managing websites from design to deployment.

Zim is a powerful, open-source graphical text editor designed for maintaining a personal wiki or notebook. It allows users to organize notes, ideas, and various types of information in a hierarchical, interlinked structure, similar to a wiki.