Apps similar to Headerbench include OpenHeader, which is free and open source. Other options are Requestly, Header Override, modheader and Header Editor. In total there are six API Clients like Headerbench for Mac, Windows, Linux and the web.
Lightweight Chrome extension lets you add, modify, or remove HTTP request and response headers securely using declarativeNetRequest. Open source with no ads, tracking, or telemetry, minimal permissions, supports multiple profiles, per-URL filters, and import/export.
Requestly is a lightweight proxy available as a browser extension & desktop app to intercept & modify network requests. Using Requestly you can Modify Headers, Redirect Url, Mock API response, Delay/Throttle requests, etc.
United States
Header Override lets you modify or inject HTTP headers and cookies to customize web requests and responses.
Ukraine
ModHeader is a powerful browser extension that provides users with complete control over HTTP(S) headers. By allowing you to modify, add, or remove headers in a simple and user-friendly interface.
Japan
Header Editor lets developers add, modify, or remove HTTP request headers per URL pattern using Chrome's MV3 declarativeNetRequest — no response-body access, rules stay local.
Japan
Open-source Chrome extension to add & modify HTTP request headers and share configs in one click. A lightweight ModHeader alternative — no ads, no tracking.
