Pro usar iste additivos, tu debera discargar Firefox.

Aperir session
Icone del additivo

Recensiones de Tab Session Manager

Tab Session Manager per sienori

4,2 Stellas de 5
5
731
4
204
3
50
2
46
1
121
Responsa per sienori

Responsa de disveloppator

publicate 6 jierren lyn
It is a bug of Firefox. See https://support.mozilla.org/en-US/kb/add-ons-disabled-or-fail-to-install-firefox