Skip to content
EN

Software · Self-hosting

codex

A wiki and document store built with React + Express. Organize markdown files in folders with a beautiful three-pane UI, dark mode, live preview, full REST API, and an optional built in MCP server.

  • Completely free
  • Open source
  • No account

Overview

codex is a note-taking program.

Features described in its GitHub repository: Markdown support, themes and dark mode, API for automation and integration.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Organize markdown files in folders with a beautiful three-pane UI, dark mode, live preview, full REST API, and an optional built in MCP server” — GitHub, 10 November 2026
  • “Organize markdown files in folders with a beautiful three-pane UI, dark mode, live preview, full REST API, and an optional built in MCP server” — GitHub, 10 November 2026
  • “Organize markdown files in folders with a beautiful three-pane UI, dark mode, live preview, full REST API, and an optional built in MCP server” — GitHub, 10 November 2026
  • “Single-user personal knowledge base - A full-stack TypeScript application that provides a beautiful, intuitive interface for creating and managing markdown documents organized in a hierarchical folder structure.” — GitHub, 10 November 2026

At a glance

codex is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (MIT) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

  • Open source code
  • No account needed
  • Commercial use allowed

Sources and checks

  • Facts collected from GitHub (credit card, account, source code, publisher, licence, free status, platforms, commercial use) —
  • Last technical check: 7 November 2026
  • Description from github.com — Dépôt GitHub bocan/codex (MIT)

How listings are built →

Do you develop codex?

Correct this listing with the report form, or cite it with this optional badge (it shows the verified free status and changes nothing in the ranking):

<a href="https://licitpro.fr/en/resource/codex"><img src="https://licitpro.fr/badge/codex.svg?l=en" alt="Listed on LicitPro" height="20"></a>

Developers and publishers →

In the same category

FlareMo

Software · Open source

FlareMo is a note-taking program, available on Android and iOS: themes and dark mode, attachments, reminders and due dates.

Completely freeAndroidiOS

kept

Software · Open source

Google Keep-style notes for iOS, Android, and self-hosting. Offline-first, with optional sync.

Completely freeAndroidiOS

PortOS

Software · Open source

Self-hosted, Self-Improving, Federated Everything App — dev management, agent orchestration, persistent mind, digital twin, second brain, and creative pipeline from a single dashboard over Tailscale to port the user…

Completely free

studylife

Software · Open source

Self-hosted study organizer — calendar, exam/study planner, focus timer, notes, and progress dashboard. Built with Blazor WASM + ASP.NET Core (.NET 10); passkey login, 26 languages, optional Home Assistant integration.

Completely freeWeb

poltergeist

Software · Open source

A quiet brain for your loud apps — a local-first second brain; nothing leaves your machine.

Completely freeWinMacLinux

Butler

Software · Open source

Butler is a home automation program, available on Linux.

Completely freeLinux