NoteDiscovery

Alexandrie is a self-hosted, open-source knowledge base and wiki for teams and individuals, positioned as an alternative to Notion, Confluence, and Obsidian. It uses an extended CodeMirror 6 Markdown editor with support for LaTeX, custom containers, interactive checkboxes, snippets, speech-to-text, and embedded diagram creation. Notes are organized through multi-tenant teams, workspaces, categories, and nested documents, with full-text search, a command center, integrated Kanban boards, public links, and node- or workspace-level permissions ranging from no access to owner. It is distributed as an offline-first progressive web app with synchronization, OIDC/SSO support, Docker deployment, backup and restore pipelines, and S3-compatible media and backup storage.

Noty is a native macOS sticky-notes app built with Swift, SwiftUI, and AppKit. Notes rest as a pill on the screen edge and fan out into tabs when the pointer reaches it, avoiding floating windows and a Dock icon. It supports inline checkbox tasks, quick capture, search, archiving, Markdown editing and export, import, multiple displays, customizable global shortcuts, and automation through a noty:// URL scheme. Notes are stored in a local SQLite database, with note bodies encrypted using AES-GCM through CryptoKit; titles, colours, and timestamps remain in plaintext. The app requires macOS 15 or later, does not require an account or system permissions, and reports no server, analytics, telemetry, or tracking SDK use. It is distributed as a macOS application and DMG, is MIT-licensed, and is not sandboxed or notarized according to the repository.

Obsidian is a note-taking and personal knowledge management application by Obsidian.md that stores notes as local Markdown files. It provides features for linking notes (backlinks), a graph view, and a plugin system for extensibility across desktop and mobile.

Clipnote is a notepad for saving and organizing content generated in AI conversations. It stores plain text, Markdown, and HTML clips, preserving HTML layout and interactivity, and lets users search, pin, archive, version, restore, and delete them. Clips can be private or shared through public URLs, and collections bundle multiple clips into one shareable page. Through MCP connections with Claude and ChatGPT, an assistant can save a new clip, retrieve a clip's content to inform a response, or update an existing clip. Updates automatically preserve the previous version. Clips can also be created or updated manually by pasting text or uploading a file.