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Browser Development Toolkit

Record workflows. Modify HTTP traffic. Team collaboration via Git

Open source. Privacy-focused. Offline only. Code signed (macOS+Windows)

Download Other platforms

and

Add to Browser Other browsers

Record Workflow

One-click recording initiation
Capture browser tab activity in real-time
Create professional demos effortlessly
Debug technical issues with complete context

Recording Interface

Share Recording

Export as MP4 or WebM video formats
Save as JSON for perfect reproduction
Attach to bug reports and tickets
Share via secure links with teammates

Export Recording Options

Session Recording Demo

Play Recording

Full playback control with timeline navigation
Inspect network requests and responses
View console logs and error messages
Track storage and cookie changes
Export sessions for team collaboration

Team Workspaces

Team Workspaces

Git-based configuration synchronization
Share rules and environments with team
Keep sensitive data locally encrypted
Branch-based workflow support

HTTP Modification

Real-time header and request modification
Dynamic values from files and environment
HTTP endpoint value injection
Regex-based pattern matching

HTTP Modification Rules

Privacy First

No telemetry or analytics
No cloud dependencies
Everything runs locally on your device
Your data never leaves your computer

Open Source

Fully transparent codebase
Modifiable and extensible
Fork and customize for your needs
MIT licensed - use freely in any project

Transparent Pricing

No hidden fees. No limitations.

Free

$ 0

Everything Included

Unlimited modification rules
Unlimited sources (HTTP/Env/File)
Unlimited recordings
Team workspace collaboration
Free support (Website Chat & Email)
Personal and commercial use
No telemetry or data collection

Need additional features?

We're always improving OpenHeaders based on community feedback. Reach out via the website chat in the bottom right corner or email us.

Get Started

Desktop Application

Available for macOS, Windows, and Linux

Other platforms

Browser Extensions

Works with all major browsers