The Best opensource Alternatives in 2026

Private AI for your own documents, on Mac, with Windows coming soon.

NoteDiscovery provides a self-hosted Markdown knowledge base with AI assistant integration, wikilinks, and graph views.

A fully open source and end-to-end encrypted note taking alternative to Evernote.

Note Discovery describes itself as a self-hosted knowledge base, according to its repository page.

SilentNotes synchronizes notes between Android and Windows devices, according to its repository description.

WikiDocs is a flat-file wiki built with Markdown and does not require a database, according to its repository description.

DokuWiki provides an open-source wiki engine, according to its project repository.

Standard Notes is an end-to-end encrypted note-taking app for capturing notes and files, according to its repository description.

Org-roam is a Roam-inspired note-taking project built around Org-mode, as stated in its repository description.

TidGi is a desktop knowledge-management and note app with automated Git backups, according to its repository description.

VNote is a Qt-based open-source note-taking application that combines note management with editing for Markdown, Typst, plain text and code, mind maps, and PDF reading on Linux, Windows, and macOS.

Trilium Notes supports building a personal knowledge base, as described by the project page.

KeyNote NF offers a tabbed notebook with a rich-text editor, nested notes, and encryption, according to its project description.

Saber supports handwriting in an open-source app designed for use across platforms, according to its project description.

Xournal++ supports handwritten note-taking and PDF annotation on Linux, macOS, and Windows, including pen input from devices such as Wacom tablets.

Obsidian Web Clipper highlights and captures web content, saving it as Markdown files that can be read offline.

SwarmVault combines a local-first LLM wiki with a knowledge graph, RAG knowledge base, and agent memory store.

Simplenote Electron provides the Simplenote app for Web, Windows, and Linux, according to its project description.

Manage knowledge and collaborate with Logseq, an open-source platform described by its project as privacy-first.

Manage Markdown knowledge bases with Tolaria, a desktop app described by its project page.

Docmost is open-source collaborative wiki and documentation software for teams.

SiYuan offers a self-hosted knowledge workspace described as open-source and privacy-first, with collaboration for people and AI agents.

Memos provides a self-hosted timeline for short notes, which users can later find by search, tag, or date.

Butterfly supports handwritten note-taking, drawing, and organizing ideas in an open-source endless workspace.