About

The story behind the Firefox session manager built for productivity enthusiasts.

Sessionaire

Our Mission

To help people work more efficiently by providing the best session management experience for Firefox users.

Sessionaire was born out of frustration. Like many power users, we found ourselves juggling dozens of tabs across multiple windows, only to lose everything when Firefox crashed or when we needed to restart our browser. Existing solutions were either too complex, too slow, or required sending our data to external servers. We wanted something different: a fast, private, and elegant session manager that just works. So we built Sessionaire from scratch using pure vanilla JavaScript—no frameworks, no dependencies, no tracking. Just clean, efficient code that respects your privacy and gets out of your way.

Our Values

Privacy First

Your data stays on your device. We don't collect, track, or sell any information. Ever.

Performance

Zero dependencies means lightning-fast performance. No bloat, no slowdowns.

Transparency

Clear about what we do and don't do. No hidden features, no surprises.

By the Numbers

8k+
Lines of Code
11
JavaScript Modules
0
Dependencies
100%
Private

Technology

Built With

  • 📜Vanilla JavaScript (ES6+)
  • 🎨Modern CSS with Custom Properties
  • 🦊Firefox WebExtensions API
  • ESBuild for Production Builds

Features

  • 🔍Fuzzy Search Algorithm
  • 🛡️Heartbeat Crash Detection
  • 💾Event-Driven Auto-Save
  • 🏷️Container Integration

We Value Your Feedback

Help us make Sessionaire better! Report bugs, suggest features, or just let us know what you think.

Privacy Notice

Your Data Stays Local

All session data is stored locally in your browser using Firefox's built-in storage API. Your data never leaves your device.

No Analytics or Tracking

We don't use any analytics, tracking pixels, or third-party services. We have no idea how you use the extension.

No External Connections

Sessionaire doesn't make any network requests. It works entirely offline once installed.

Minimal Permissions

We only request the permissions necessary for session management: tabs, storage, and sessions. Nothing more.