Apier – REST API Tester & HTTP Client Firefox

Download Apier – REST API Tester & HTTP Client

By: Leepverse Add-on
Download Apier – REST API Tester & HTTP Client (current and past versions) for Firefox
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Latest Version: 2.1.1 Updated: 3 days ago

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Apier – REST API Tester & HTTP Client is available to install from Firefox Add-ons Store and for download from this page.
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Available versions

You can find the current and older versions of Apier – REST API Tester & HTTP Client 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
2.1.1XPI · ZIP · Source code2.74MB02026-07-12
2.1.0XPI · ZIP · Source code2.49MB02026-07-06
2.0.0XPI · ZIP · Source code2.24MB02026-07-02
1.2.5Paid users only4.92MB02026-06-30
1.1.3Paid users only3.98MB02026-05-14
1.1.2Paid users only3.98MB02026-05-08
1.1.0Paid users only3.98MB02026-04-27
2.1.1 2.74MB
2026-07-12 · 0 downloads
XPI ZIP Source code
2.1.0 2.49MB
2026-07-06 · 0 downloads
XPI ZIP Source code
2.0.0 2.24MB
2026-07-02 · 0 downloads
XPI ZIP Source code
1.2.5 4.92MB
2026-06-30 · 0 downloads
Paid users only
1.1.3 3.98MB
2026-05-14 · 0 downloads
Paid users only
1.1.2 3.98MB
2026-05-08 · 0 downloads
Paid users only
1.1.0 3.98MB
2026-04-27 · 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 Apier – REST API Tester & HTTP Client ZIP file.
  • In Firefox browser, go to about:addons to open Add-ons Manager
  • Click on ⚙, Install Add-on From File
  • Select the Apier – REST API Tester & HTTP Client ZIP file from step 1. Apier – REST API Tester & HTTP Client is now installed on your browser.

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