Gode Tekster

A free writing app for Windows. You write in markdown, and the text is formatted as you type. Sentences you're unsure about can be dimmed instead of deleted. Your texts stay ordinary .md files in your own folders: no account, no database, no cloud.

When you ask for it, the app can trim, fact-check and clean up a text through your own subscription with Claude, ChatGPT, Gemini or Mistral. Nothing changes in your file until you click.

The interface is in Danish or English. The style check and the parts-of-speech colours only work in Danish.

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Download

Get it at tekster.godemedier.dk. There's an installer and a portable version that runs without installation. Both update themselves quietly when you close the app.

The program isn't code-signed yet, so Windows may warn you the first time. The download page explains what to do.

What it does

• Live preview. Markdown characters hide when the cursor isn't on the line. Tables are shown as tables and edited directly in the cells.
• Dimming, clippings and notes. Dimmed text is grey and left out of the word count, exports and print. Clippings hold what had to go. Notes to yourself and footnotes live in the file.
• Plain files. Reads and writes iA Writer's authorship annotations, so files can go back and forth between the two programs.
• Saves as you write. Saves 1.5 seconds after you pause. Every save is atomic (temporary file, then rename). Earlier versions are kept, and if another program changes the file while it's open, the two versions are merged or you're asked first.
• Slash commands. Type / for templates and commands. Missing one? Describe it in words, and the language model sets it up for you to preview before you save.
• Calm. Focus mode, typewriter scrolling and Quiet mode (full screen, and Wi-Fi off until you leave, if you turn that on).
• Out the door. Print, PDF and Word with templates. Word files can be dragged in and become markdown.
• Search in the open text or in all your libraries at once.

The full user guide ships with the app and is in src-tauri/welcome/vejledning.en.md.

Privacy

• AI requests go from your computer straight to the provider you picked, through your own login or key. Gode Medier never sees them.
• Gemini and Mistral keys are stored in Windows Credential Manager, not in a file.
• The app asks tekster.godemedier.dk for updates 15 seconds after start and every six hours. The server sees the version number and your IP address. Turn it off under Settings › General.
• Sync and sharing only run if you connect the app to a sync server (the code is in synk/). Synced texts are stored on that server, and a shared part of a text for 30 days. Gode Medier's own sync server isn't open to others. Without one, keep your library in a OneDrive, Google Drive or Dropbox folder.
• Feedback is only sent when you write it. After a crash, the app asks once whether the error log may be sent. The log never contains text from your documents.
• The update server stores nothing. The full statement is at tekster.godemedier.dk/privatliv (Danish).

Build it yourself

You need Windows 10 or 11 (WebView2 is built in), Node 24 (see .nvmrc), Rust (winget install Rustlang.Rustup) and Microsoft C++ Build Tools with the C++ workload. Open a new terminal after installing Rust, or cargo won't be found.

npm install            # install dependencies and arm the commit check
npm run tauri dev      # run the app with hot reload
npm test               # typecheck and tests (TypeScript and Rust)
npm run tauri build    # build the installer (src-tauri/target/release/bundle/nsis/)

How it's built

Layer	Choice
Shell	Tauri 2: a Rust core and a WebView2 window. Windows only
Core (src-tauri/src/)	Rust: files, libraries, history, merging, export, calls to the language models
Interface (src/)	TypeScript and Vite. No UI framework
Editor	CodeMirror 6 with a custom live-preview extension

The interface can only do what the Rust commands offer. It has no file system or shell permissions, the Content Security Policy allows no remote scripts, and claude.exe and codex.exe are started with an argument list, never through a shell. Document text and fetched web pages are treated as data in prompts, never as instructions.

Most of the code is written with Claude Code under my direction. Commits made with it carry a Co-Authored-By line.

What else is in the repository

Folder	What it is
server/	The small update and feedback server behind tekster.godemedier.dk. Node, no dependencies
synk/	The sync server and the page a shared text opens in. Rust
src-tauri/gen/android/, mobile.html	An experimental Android version. It isn't released
scripts/	Release, licence and data tools. Those that need private test texts say so at the top

Documentation

The project documents are in Danish. They're written to be read by both people and AI agents.

File	What's in it
STRATEGI.md	Why the app exists, who it's for, and what it deliberately won't do
ARKITEKTUR.md	How it runs, plus the decision log (ADR-0001 onwards)
AGENTS.md	The working contract for anyone, human or AI, changing the code
docs/struktur.md	The file tree, module by module
CONTRIBUTING.md	How to report bugs and suggest changes
SECURITY.md	How to report a security issue

Contributing

Bug reports and ideas are welcome as GitHub issues or by mail to [email protected]. This repository is a mirror of Gode Medier's own git server, so pull requests can't be merged here directly. See CONTRIBUTING.md.

Licence

Copyright © 2026 Gode Medier v/ Troels Kølln.

Gode Tekster is free software under the GNU General Public License version 3 (GPL-3.0-only). You may use, change and share it, including at work. If you share a modified version, it must be under the same licence and come with its source code. The full text is in LICENSE.

The name Gode Tekster and the logo aren't covered by the licence (GPL-3.0 section 7e). A modified version must have its own name.

The components the app is built on have their own licences, listed in src-tauri/resources/LICENSES.txt. The parts-of-speech list and the agreement data for the grammar check are built from UD Danish-DDT and are under CC BY-SA 4.0.