Save your research session. Resume it anywhere.
Save a live set of tabs with context and reopen them later. Sign in to sync across devices.
Save all tabs in one click — your whole window, instantly
Add a quick note — so future-you knows why
Reopen the full session — on any supported browser or device
or
Works with your browser
How it works
Capture
Click the Blackmount icon. Your entire window — every tab — is saved in one click.
Annotate
Add a quick note so future-you remembers the context. Close your tabs and breathe.
Resume
Open Blackmount on any of your devices. Click "Resume" and your tabs reopen in the order you saved them.
Tired of losing tabs when you switch browsers?
Local-only tab managers trap your data in one browser. Blackmount sets it free.
Local-only tab managers
• Data stuck in one browser
• Lost if browser crashes
• Can't access from phone/laptop
• Little organization or search
Blackmount
• Works offline like OneTab
• Syncs across all your devices
• Access from 6 browsers + iPhone
• Search, organize, add notes
Start in Guest Mode — no account needed. Sign in later to unlock sync.
Save 30 tabs of research. Come back tomorrow. Pick up exactly where you left off.
One-click session save
Capture a whole window and restore the full tab set later, in order.
Sync across devices
Save on your laptop, resume on your phone — or any device. One account, every screen.
Works across 6 browsers
Chrome, Firefox, and Edge today. Switch browsers without losing your tabs.
Private by default. No background tracking. Secure cloud storage.