KeepNote Alternatives for Linux

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.

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.

CherryTree is a powerful, free, and open-source hierarchical note-taking application. It allows you to organize your thoughts, ideas, notes, and code snippets in a tree-like structure with rich text editing and syntax highlighting.

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.

BasKet Note Pads is a versatile, freeform note-taking application for KDE that allows users to organize thoughts, manage tasks, and gather information visually. It supports various content types, offering powerful organization and sharing capabilities.

Piggydb is an open-source web notebook application designed for building and managing knowledge bases, either individually or collaboratively. It emphasizes structured organization through hierarchical tagging and concept mapping.

TreePad is a versatile personal information manager and notes organizer that utilizes a hierarchical tree structure to help you manage various types of information, from simple notes and to-do lists to complex knowledge bases.

OutWiker is a portable, tree-structured note-taking application that allows users to organize information hierarchically. Functioning as a personal wiki or outliner, it provides a simple yet powerful way to manage notes, documents, and ideas in a flexible, offline environment.

MyTetra is a versatile, cross-platform information manager designed for collecting, organizing, and managing various types of data. It excels as a portable note-taking application, personal information manager, and notebook, offering a robust outliner and rich text editing capabilities.

NoteCase Pro is a versatile, cross-platform application designed for efficiently capturing, organizing, and managing various types of information. It offers a hierarchical structure, robust security features, and extensive customization options for users across different operating systems.

Trilium Notes is a versatile, open-source personal knowledge base application designed for organizing notes in a hierarchical tree structure. It empowers users to manage information efficiently, from simple text notes to complex knowledge graphs, with robust features for tagging, search, and synchronization. Ideal for anyone seeking a powerful, customizable, and offline-first note-taking solution.

Footnote is a streamlined and intuitive note-taking application specifically designed for elementary OS. It provides a clean interface for capturing, organizing, and syncing your thoughts and information seamlessly.