Anṣuf ar Thunderbird n izegrar.
Rnu timahilin neɣ iɣunab nniḍen akken ad terreḍ Thunderbird d ayla-k.
MdelAcegger n Live HTTP Headers sɣuṛ blseal
Yettwasezmel 5 ɣef 5 n yetran
Spyder, Lucian, sounds like you're looking for Server Spy (https://addons.mozilla.org/en-US/firefox/addon/2036). Nice little addon, displays the web server type in the status bar, and double-clicking on it displays additional details (like what extensions have been loaded on it).
As for LiveHTTPHeaders, it's the best addon of its type!
Ma ulac aɣilif ini-d acuɣeṛ:
Akken ad ternuḍ tigrummiwin inek, yessefk ad yili ɣur-k umiḍan n izegrar Mozilla.