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 device or browser
or
Works with your browser
How it works
1
Capture
Click the Blackmount icon. Your entire window — every tab — is saved in one click.
2
Annotate
Add a quick note so future-you remembers the context. Close your tabs and breathe.
3
Resume
Open Blackmount on any device. Click "Resume" and all your tabs reopen exactly as you left 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
• No organization or search
✅ Blackmount
• Works offline like OneTab
• Syncs across all your devices
• Access from Chrome, Firefox, Edge
• 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 it later exactly as you left it.
Sync across devices
Save on your laptop, resume on your phone — or any device. One account, every screen.
Works on every browser
Chrome, Firefox, and Edge today. Switch browsers without losing your tabs.
Private by default. No background tracking. Secure cloud storage.