Horizon21

Horizon21 is a Firefox add-on publisher. It has published 1 Firefox add-on, including Haikyuu. Its Firefox add-ons have reached 18 users.

Users: 18

Rating: 4.50 (2)

Total active add-ons: 1

Number of previously published add-ons: 1

Active extensions

Haikyuu

#1, Haikyuu

Horizon21

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4.50 (2)

18

Previous extensions

Rakuzan

#1, Rakuzan

Horizon21

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0.00 (0)

1

Stats trends

Total user count

Firefox add-on count

Rating