Clamshell
Clamshell is a Mac menu bar app that keeps Apple Silicon MacBooks running with the lid closed, with no external display, admin password or privileged helper. The screen stays black but usable, so computer-use agents keep working. Sold directly at clamshell.dev ($9.99 one-time, 90+ licenses) and on Setapp (~700 monthly active users, recurring revenue). Native Swift, macOS 14+, built by Clamshell Kft. in Budapest.
Clamshell
Clamshell is a Mac menu bar app that keeps Apple Silicon MacBooks running with the lid closed, with no external display, admin password or privileged helper. The screen stays black but usable, so computer-use agents keep working. Sold directly at clamshell.dev ($9.99 one-time, 90+ licenses) and on Setapp (~700 monthly active users, recurring revenue). Native Swift, macOS 14+, built by Clamshell Kft. in Budapest.
Ranked #3850 on TrustMRR
No active subscriptions
Matyas19 followers on π
HungaryRevenue is verified with
LemonSqueezy API key.Last updated: Nov 15, 2026, 06:21 PM
Keeps an Apple Silicon MacBook running with the lid closed. No external display, no admin password, no Terminal. One click in the menu bar.
Closing a MacBook's lid sleeps it, stopping AI agents, downloads and remote sessions. Most lid-closed apps need an admin password or helper and turn the screen off. Clamshell needs neither and keeps the screen usable for computer-use agents.
Audience
Mac power users: developers running AI coding agents, remote Mac users.
Pricing
$9.99 for Lifetime, $19.99 for Lifetime, 3 Macs.
Team size
1 person
Domain Rating
clamshell.dev
Ahrefs Domain Rating measures backlink profile strength on a 0 to 100 logarithmic scale.
Market
Tech stack
Backend
Additional info
Sold directly at clamshell.dev (140+ licenses) and on Setapp (~700 monthly active users). Native menu bar app for Apple Silicon Macs, no admin rights needed. Built by Clamshell Kft.
Screenshot
clamshell.dev
"Clamshell is a native macOS menu bar app that keeps a MacBook awake with the lid closed, popular with developers running AI coding agents overnight. One-time $9.99 license after a 7-day trial, launched May 2026. All growth is organic: Google, ChatGPT and AI search citations, with orders trending up. Also on Setapp (about $100-165/mo extra, not in the verified revenue). Near-zero running costs, clean Swift codebase, small Cloudflare licensing backend. Full handover included."
Matyas
Founder of Clamshell
Product updates
More startups for sale
View MarketplaceVoiceBrief
VoiceBrief is a SaaS learning platform that turns PDFs, web pages, and text into original-document audio, synced read-along, summaries, quizzes, flashcards, and slides. Customers discover VoiceBrief at voicebrief.io and subscribe to VoiceBrief Pro for $19.99 per month.
Revenue (30d)
$26
Asking Price
$20k
$12k
Multiple
38.7x
PDF Vault
PDF Vault is a done-for-you digital business-in-a-box. Members license ready-to-sell PDFs that come with a hosted sales page, and they keep 100% of their sales. It earns money two ways: one-time license fees plus recurring monthly hosting. Tiered pricing raises the price as licenses sell, so each product earns more as it fills and early buyers move fast. Licenses are capped, and new products launch in weekly drops, so the doors open just once a week. That scarcity creates real urgency.
Revenue (30d)
$8.8k
Asking Price
$81k
Multiple
0.9x
Private Enterprise
An app for content creators: upload a video and get a score and report on how viral it could be. Steady new users every month, low running costs, and plenty of room to grow with better marketing. Not in a rush to sell. Happy to talk with serious buyers.
Revenue (30d)
$466
Asking Price
$12k
$10k
Multiple
1.8x
Unnamed Company
AI Social Media
Revenue (30d)
$5.4k
Asking Price
$95k
Multiple
1.4x
Private Enterprise
This saas analyzes text to determine whether it was written by AI - such as ChatGPT, Claude, Gemini, or any other LLM. Itβs also the perfect tool to humanize AI-generated content, making it read completely human.
Revenue (30d)
$357
Asking Price
$6k
$4k
Multiple
0.9x
GEHIRN.md
The tool u need to win in AI Search.
Revenue (30d)
$386
Asking Price
$22k
$15k
Multiple
3.2x