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Writing Tools

System-wide AI grammar, writing, and summarization assistant for your PC.

System-wide AI writing assistant

Proofread, rewrite, and summarize text across any application with local or cloud LLMs.

Free forever · open source · GPL-3.0
✓ Use today✓ Browser-based✓ Real-time collaboration
7
ZEKAI
Open-source Apple Intelligence alternative
Free & open source · Pro Services
Ease of setup3
Usefulness9
Maintenance8.5
Community7.5
★ 2,472
GITHUB
Aug 2026
UPDATED
GPL-3.0
LICENSE
🛠 Don't want to self-host? We can set it up →
⚡ Quick answer

Writing Tools brings Apple Intelligence-style text processing to Windows, Linux, and macOS. You can invoke it globally via a hotkey to proofread, change tone, summarize content, or execute custom commands.

Runs on
Cross-platform
Hosting
Desktop
Languages
Swift
License
GPL-3.0

What it is

The application intercepts selected text across your operating system, passes it to your choice of local or cloud LLM, and replaces it with the optimized output. It also includes webpage and YouTube transcript summarization alongside custom action buttons.

Who it's for

It suits professionals who write across diverse desktop applications and want control over their choice of AI model. It does not suit users who want a purely web-based tool or require zero configuration.

Key features

System-Wide Hotkey

Invoke proofreading, rewriting, or custom commands over any selected text using a global shortcut.

Rich-Text Preservation

The native macOS port preserves formatting like bold, italics, lists, and links during proofreading.

Content Summarization

Summarize webpages, documents, emails, and YouTube transcripts with interactive chat capabilities.

Custom Actions

Add your own custom buttons and instructions for specialized text transformations or code formatting.

How to start

Up and running in 3 steps

1
Download the latest release zip for Windows or DMG for macOS from the repository.
2
Extract the portable executable on Windows or drag the app to your Applications folder on macOS.
3
Configure your preferred AI provider in the settings, such as the free Gemini API or a local LLM.
Real talk

Our honest verdict

What's great

  • Works system-wide across almost all desktop applications on Windows, Linux, and macOS.
  • Supports local LLMs via Ollama, MLX on Apple Silicon, and llama.cpp for complete data privacy.
  • Connects to free Gemini API and OpenAI-compatible cloud providers.
  • Preserves rich-text formatting on macOS when proofreading documents.

Where it falls short

  • Requires you to bring your own API key or configure a local LLM runtime like Ollama or MLX.
  • Linux version has specific caveats and works best on X11 or with XWayland apps.
  • Portable Windows app requires administrative privileges on first launch if placed in protected folders.
Cost

Pricing & license

The software is completely free under its open-source license. The only cost is running it yourself, either via free tier API keys, paid cloud LLMs, or your own local hardware.

Paid work

Open remote AI-training roles

767 open remote AI-training roles, updated November 14, 2026; most pay $20–$175 an hour. Zekai lists them free; the application goes to the employer’s platform.

See all open roles →
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Questions

FAQ

Does this work on all operating systems?

It supports Windows, Linux, and macOS, with a native Swift port for macOS and a portable build for Windows.

Can I use it without an internet connection?

Yes, by configuring local LLMs via Ollama on Windows/Linux or MLX on Apple Silicon Macs.

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