💡 Pick it if you want deeper Firefox privacy and fingerprinting controls alongside user-agent spoofing.
Chameleon is a versatile software solution for user onboarding and product tours.
Starting from $99/month
Best User-Agent Switcher and Manager Alternatives ranked by AI · updated Aug 2026
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User-Agent Switcher and Manager is a browser extension for changing the user-agent string sent by websites. It is aimed at developers, testers, and privacy-conscious users who need per-site or temporary browser identity changes.
Top 6 User-Agent Switcher and Manager alternatives
2
ModHeader
ModHeader
💡 Pick it if you need to modify user-agent and other HTTP headers from one browser extension.
ModHeader is a browser extension and web tool for viewing and modifying HTTP request and response headers. It is aimed at web...
Pros
- Can modify headers as well as inspect them
- Supports reusable profiles and conditional rules
- Available for major browsers and more capable than a simple header viewer
Cons
- More complex to configure than HTTP Header Spy
- Advanced features require a paid plan
- Browser-extension permissions may concern privacy-sensitive users
Freemium
💡 Pick it if user-agent changes are part of larger redirect, header, API, or response-mocking workflows.
Requestly is a powerful tool to modify network requests. It can be used for URL redirection, header modification, modifying response data, etc.
Free with paid plans available
4
Header Editor
FirefoxBar
💡 Pick it if you want a free, open-source header editor with more rule precision than a basic UA switcher.
Header Editor is an open-source extension for modifying HTTP request and response headers and redirecting URLs. It serves developers and advanced browser...
Pros
- Free and open-source alternative to commercial header tools
- Supports request and response header rules, including user-agent changes
- Provides detailed matching and replacement conditions
Cons
- Less polished and approachable than ModHeader
- Requires more manual rule configuration than the original
- Does not provide broad fingerprint spoofing by itself
Free, open source
💡 Pick it if you need to inspect and rewrite full HTTP traffic across browsers, mobile apps, or APIs.
HTTP Toolkit is a suite of tools designed for debugging, testing, and building with HTTP(S). It provides powerful features for monitoring and...
Pros
- Rich set of features for HTTP debugging
- User-friendly interface
Cons
- Some advanced features are paid-only
- May be overwhelming for beginners
Free / Paid
💡 Pick it if you need programmable, open-source control over user agents and complete HTTP or HTTPS traffic.
mitmproxy is a free and open-source interactive HTTPS proxy.
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