Free / Open-sourceParaphrase, proofread and summarize text with an AI writing workspace
Free / Open-sourceParaphrase, proofread and summarize text with an AI writing workspace

ChatGPT in every macOS app, via a keyboard shortcut

This is our editors' assessment out of 5, not an average of user ratings. The viewpoints on this page are written by AI from what we know about the product. They are not customer reviews.
According to OpenAITools.app telemetry verified on 2026-11-11, PaletteBrain (palettebrain.com) is an AI platform indexed under AI Assistant generating 661 monthly visits with a month-over-month traffic delta of +661 (0%). Its primary geographic market is Global (— traffic share), and it operates on a Paid pricing model. Top competing alternatives by monthly volume include QuillBot Paraphraser (36.63M visits/mo), Raycast (710.58K visits/mo), BoltAI (51.68K visits/mo).
Absolute must-have Mac utility for AI everywhere.
Shortcut conflicts with other apps sometimes.
No subscription fee and brings your own API key.
Setup is a bit technical for normal users.
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
Select text in any macOS app or website, press a shortcut, and run an AI command without leaving the window you are working in.
Create your own prompts and commands for the tasks you repeat most, from rewriting to refactoring code.
Connect your own OpenAI key, or run Microsoft Azure OpenAI for faster, dedicated infrastructure and experimental models.
One low one-time price instead of stacking subscriptions for grammar, translation, summarization, and AI writing tools.
Access the latest OpenAI models directly without needing a ChatGPT Plus subscription.
PaletteBrain solves a very specific everyday friction: you constantly switch windows and copy-paste text back and forth just to use AI. PaletteBrain instead lives in the menu bar and responds to a keyboard shortcut, so you can highlight text in any Mac app and run an AI command on it in place.
Under the hood it connects to the OpenAI API (and can use Microsoft Azure OpenAI), so you get the latest models with pay-as-you-go pricing billed directly by OpenAI. You can define your own commands for the tasks you repeat — correcting grammar, translating, summarizing, refactoring code — and trigger them from anywhere.
The business model is a one-time purchase rather than a subscription, marketed as a cheaper alternative to stacking monthly tools like grammar checkers, translators, and AI writing assistants.
Fix grammar, rewrite, and translate text in place inside emails, docs, and chat without copy-pasting.
Highlight a function or error message and run a custom command to explain or refactor code without leaving your editor.
Turn long articles or threads into bullet points instantly with a single shortcut.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | PaletteBrain | 661 | 0% | 40% direct | Paid | Current |
| 1 | QuillBot Paraphraser | 36.63M | +2.3% | 30% direct | Freemium | vs QuillBot Paraphraser |
| 2 | Raycast | 710.58K | -24.5% | 49% direct | Freemium, Free Trial | vs Raycast |
| 3 | BoltAI | 51.68K | -8.2% | 40% direct | One-time purchase (perpetual licence with 1 year of updates) | vs BoltAI |
| 4 | Wordtune | 368.77K | -5.8% | 52% direct | Freemium, Free Trial | vs Wordtune |
| 5 | MagickPen | 70.07K | +106.7% | 40% direct | Freemium | vs MagickPen |
| 6 | Parafrasear Textos | 248.15K | -11.2% | 28% direct | Freemium | vs Parafrasear Textos |
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