Put ChatGPT, Claude, Gemini and more side by side in one desktop app for Windows, macOS and Linux. Compare answers, switch accounts in a keystroke and carry context from one AI to the next — you stay in control of every send.
Windows, macOS and Linux · Free to start · No card needed
CapAICtrl KDraft and explore
Who it helps, what changes for them, and the smallest useful first version.
Review and refine
Compare the options, find the gaps, and choose a concrete next step.
Illustrative preview — not a live chat
Works with the AI websites you already use
Sign in with your own accounts. Each provider's plans and usage limits still apply.
Features
CapAI keeps the original AI websites and adds a calm workspace around them. Here's what that means in practice.
Each pane holds a full AI website signed in with its own account. Draft on one side, challenge it on the other, and drag the divider to give either side more room.
Press Ctrl+K — even while typing in a chat — to open the account picker. Accounts are grouped by platform; search, pin your favourites and open any of them on the left or the right.
Share left or right copies the visible conversation into the other AI's message box, with a short brief on top: where it came from, how many turns, the date and what to do first.
Continue with another AI walks you through moving a conversation to a different account. Or ask the current AI to write a handoff file — HANDOFF_<topic>.txt — with goals, decisions and next steps.
Hit a usage limit? Mark the account for 1, 3, 5 or 24 hours, or a custom time. It's dimmed, sorted last, warns you before opening and clears itself.
Every account has its own local browser session. CapAI's licence service never receives your conversations.
Sign-in popups open only for known provider addresses. Anything else is refused.
When Google blocks sign-in inside an embedded page, CapAI tells you why and takes you back to the service.
Switch theme and language from the header. The whole app follows.
Ctrl+K toggles the picker from anywhere; Escape closes dialogs.
How it works
Download CapAI for Windows, macOS or Linux. Start with the Free plan; no activation code needed.
Add AI accounts and sign in on each provider's own website. Put the two you need into the panes.
Buy a code through PayPal, then enter it in CapAI → Activate Pro. Your term starts at first activation.
Pricing
One-time payments. No automatic renewal. Choose how long you need Pro.
Get a feel for the workspace.
No activation needed
Download freeTry it for a week
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Get ProBuild your rhythm
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Get ProYour everyday workspace
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Get Pro| Free | Pro | |
|---|---|---|
| AI accounts | Up to 2 | More |
| Two resizable panes | ✓ | ✓ |
| Ctrl+K picker and pins | ✓ | ✓ |
| Limit marks | ✓ | ✓ |
| Share left / right | — | ✓ |
| Continue with another AI | — | ✓ |
| Handoff file request | — | ✓ |
No. CapAI is the desktop workspace. You bring your own AI accounts and subscriptions. Each provider's pricing, terms, availability and usage limits still apply.
Free lets you add up to two accounts and use the two-pane workspace, the account picker and limit marks. Pro adds more accounts plus sharing and handoff tools. Existing account sessions are kept when a licence expires.
No. Sharing prepares text in the target message box. You review it and press Send yourself. Website changes can affect extraction or insertion; CapAI reports a failure instead of claiming success.
Up to approximately 120,000 characters of the page text that is loaded. If longer, the oldest part is trimmed. This is not a guaranteed full-history backup.
At first activation in CapAI, not at checkout. A week is 7 days, a month is 30 days and a year is 365 days. Each code is for one machine. There is no automatic renewal.
On the checkout page right after payment is confirmed, and by email to the address you enter at checkout. Save it privately. If the email doesn't arrive, check spam or contact support with your PayPal transaction reference.
Yes, AI websites need internet access. Pro also checks its licence online from time to time and stays verified offline for up to three days, never beyond its expiry.
Windows 10 and 11 (64-bit), macOS 11 or later on Apple Silicon or Intel, and 64-bit Linux (AppImage, or .deb for Ubuntu and Debian). The macOS app is not yet notarized by Apple: the first time, right-click CapAI and choose Open.
Email support@nhiplabs.com with your PayPal transaction reference and a short description. Never send passwords, cookies or your full activation code.
CapAI · Nhip Labs
One app for Windows, macOS and Linux. Installs in a minute, no card needed.
xattr -dr com.apple.quarantine /Applications/CapAI.appUbuntu, Debian, Mint (.deb)
wget https://nhiplabs.com/downloads/CapAI-1.2.1-linux-amd64.deb
sudo apt install ./CapAI-1.2.1-linux-amd64.debAny 64-bit Linux (AppImage)
wget https://nhiplabs.com/downloads/CapAI-1.2.1-linux-x86_64.AppImage
chmod +x CapAI-1.2.1-linux-x86_64.AppImage
./CapAI-1.2.1-linux-x86_64.AppImageUbuntu 22.04 and later need FUSE 2 for AppImage: sudo apt install libfuse2t64 (24.04) or libfuse2 (22.04). On Ubuntu 24.04 the .deb is the simpler choice.
Then open CapAI from your app menu.
3c981002bbe3d039771f29787283283de41b4a3a6789751ca2806bfc66400a76 CapAI-1.2.0-win-x64.exece82e16caf1b32bb4a6886caeb511f744bd5597718e42f813fefededb217d9f0 CapAI-1.2.0-mac-arm64.dmgb46685cbd2aeb06af076fd1d18ea925042a8dbd78d087351a7d542c3941a0875 CapAI-1.2.0-mac-x64.dmgfec0bc2ef0202c75a83fcb50e5b7c7a23b58af325b96fac647c563fa041c5ddf CapAI-1.2.1-linux-amd64.debe13260fe8a8b5d4778a0ed4b039b9b88aeb796d69331f4385c4e9ac2de6e8e8c CapAI-1.2.1-linux-x86_64.AppImagePayPal processes payment details. Our server stores order references, payment state, hashed licence records and the email address you enter (used only to send your code and for support); the activation service receives a hashed device identifier. Account sessions stay on your computer. No analytics or advertising trackers on this page.
Questions about payment, privacy or refunds? support@nhiplabs.com