Switch projects without losing a single tab.
Save each project as a named session. Q1 budget review (12 tabs), product launch prep (24 tabs), competitor analysis (18 tabs). Swap context in one click — your tabs reopen exactly where you left off.
Context switching is silently expensive
Anyone running 3–5 projects in parallel knows the pain. You're deep in the Q1 budget — spreadsheets, Slack threads, last quarter's BI dashboard, three pricing pages — when your boss pings: "quick favor, can you draft a vendor evaluation by 4pm?" Now you've got a second project's worth of tabs piling on top of the first. By Friday you're at 80+ tabs across one window, half of which you can't remember why you opened.
Browsers don't help. Profiles require a restart. Tab groups are still inside the same window. Bookmarks are too granular — you'd have to re-bookmark 24 tabs every time you swap. So everyone falls back to keeping every tab open all the time, which is how you end up paying for context switching with RAM, focus, and search-time.
Each project gets a session. Switch in one click.
Name each project
"Q1 Budget Review," "Product Launch Prep," "Competitor Analysis." Each session keeps the tabs together with a clear label.
One-click swap
Click "Restore" on any saved session. Your current tabs save automatically. The new project's tabs open in seconds.
Sync across devices
Switch projects on your work laptop, then continue on your home Mac, your iPad, or your iPhone. Sessions follow you.
A typical Wednesday
9 AM · Q1 Budget Review
12 tabs open: spreadsheet, BI dashboard, last quarter's deck, three pricing pages, two Slack threads. You're heads-down on the variance analysis.
11 AM · Boss pings: "Vendor eval by 4?"
You save the budget session as "Q1 Budget — variance WIP". One click. Your 12 tabs are stored, ready to come back to.
11:01 AM · Restore "Vendor Evaluation"
Your 18 vendor research tabs from last week reopen — comparison docs, pricing pages, security one-pagers. You pick up exactly where you left off.
3 PM · Vendor draft sent
Save "Vendor Evaluation" again. Restore "Q1 Budget — variance WIP". 12 tabs reopen with everything where you left it. No friction, no searching, no losing your place.
Frequently asked questions
Can I save tabs for multiple projects and switch between them?
Yes. Blackmount lets you save each project as a named session — "Q1 budget review," "Product launch prep," "Competitor analysis." Open one with a click; switch to another the same way.
What happens to my open tabs when I switch projects?
Save the current session and your tabs are stored in the cloud. Restoring a different session reopens those tabs wherever you are — same browser, different browser, or your phone.
Does Blackmount work across multiple browsers and devices?
Yes. Sessions sync across the extension (Chrome, Firefox, Edge, Safari, Brave, Vivaldi, Opera), the web app, and the iOS app. Save at work, restore at home, review on iPhone during commute.
How is this different from browser profiles?
Profiles separate cookies, history, and bookmarks but require restarting and don't sync across browsers. Blackmount sessions are lightweight: switch in one click, no restart, sync to every device including iPhone (where browser profiles don't exist).
How many projects can I save?
Free guest mode supports a small number of saved sessions. The Pro plan ($0.99/month) is unlimited — save as many named projects as you need.
Get Blackmount — free
Memory for your AI. Available on every browser, the web, and iPhone.
Also works on Edge, Safari, Brave, Vivaldi, and Opera