Mock Express Firefox

Download Mock Express

By: Mock Express Add-on
Download Mock Express (current and past versions) for Firefox
xHeader
Modify request and response headers. No ads, no malware.
Try xHeader →
Latest Version: 2.0.5 Updated: 5 months ago

Ready to install?

Mock Express is available to install from Firefox Add-ons Store and for download from this page.
View source code
52
Daily users
—
No ratings yet
0
Total downloads

Available versions

You can find the current and older versions of Mock Express here. You can download the archived versions or inspect their source codes.

As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
VersionDownloadSizeDownload countTimestamp
2.0.5XPI · ZIP · Source code756.61KB02026-03-19
2.0.3XPI · ZIP · Source code755.61KB02026-02-28
2.0.2XPI · ZIP · Source code753.97KB02025-12-26
2.0.1Paid users only753.62KB02025-10-13
2.0.0Paid users only729.61KB02025-10-07
1.1.7Paid users only724.89KB02025-09-27
1.1.6Paid users only724.04KB02025-09-23
1.1.5Paid users only724.04KB02025-09-10
1.1.4Paid users only723.86KB02025-09-02
1.1.2Paid users only721.38KB02025-08-05
1.1.1Paid users only721.33KB02025-08-03
1.0.3Paid users only657.45KB02025-07-31
1.0.2Paid users only656.20KB02025-07-31
1.0.1Paid users only656.02KB02025-07-30
2.0.5 756.61KB
2026-03-19 · 0 downloads
XPI ZIP Source code
2.0.3 755.61KB
2026-02-28 · 0 downloads
XPI ZIP Source code
2.0.2 753.97KB
2025-12-26 · 0 downloads
XPI ZIP Source code
2.0.1 753.62KB
2025-10-13 · 0 downloads
Paid users only
2.0.0 729.61KB
2025-10-07 · 0 downloads
Paid users only
1.1.7 724.89KB
2025-09-27 · 0 downloads
Paid users only
1.1.6 724.04KB
2025-09-23 · 0 downloads
Paid users only
1.1.5 724.04KB
2025-09-10 · 0 downloads
Paid users only
1.1.4 723.86KB
2025-09-02 · 0 downloads
Paid users only
1.1.2 721.38KB
2025-08-05 · 0 downloads
Paid users only
1.1.1 721.33KB
2025-08-03 · 0 downloads
Paid users only
1.0.3 657.45KB
2025-07-31 · 0 downloads
Paid users only
1.0.2 656.20KB
2025-07-31 · 0 downloads
Paid users only
1.0.1 656.02KB
2025-07-30 · 0 downloads
Paid users only

Install XPI file

An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
  • Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

  • Download the Mock Express ZIP file.
  • In Firefox browser, go to about:addons to open Add-ons Manager
  • Click on ⚙, Install Add-on From File
  • Select the Mock Express ZIP file from step 1. Mock Express is now installed on your browser.

Best Mock Express Alternatives

Here are some Firefox add-ons that are similar to Mock Express:

Moq - Mock API Requests
Pavel Shpakovich
11 0.00 (0)
ModResponse Mock replay API
789Win
33 0.00 (0)
tweak: mock and modify HTTP requests
tweak
1K 4.14 (28)
Network Interceptor
Dheeraj Kumar
5 0.00 (0)
Interceptor
Codemancers
132 3.40 (5)
API Mock Generator
Bernard Williamson
1 0.00 (0)
Mocklet
Nikolai
5 0.00 (0)
RequestBridge: Fast-Track Your Dev & QA
RequestBridge
- 0.00 (0)
APIlot
Mohamed Zumair
- 0.00 (0)
Parrot API mocking Pro
23WIN
2 0.00 (0)
API MOCK
yasewang
- 0.00 (0)
API Request Interceptor Mock
Mithun G S
1 0.00 (0)