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Magyar helyesírási szótár

A Magyar Ispell helyesírási szótár a Hunspell helyesírás-ellenőrző programhoz készített nyílt forráskódú magyar szótár.

Rated 4 out of 5 stars (56)
8,699 users

Český slovník pro kontrolu pravopisu

Slovník pro kontrolu pravopisu pro aplikace Mozilla

Rated 4 out of 5 stars (36)
15,088 users

Deutsches Wörterbuch, erweitert für Österreich

Deutsches Wörterbuch (neue Rechtschreibung), erweitert mit österreichischen Wörtern, für die Rechtschreibprüfung in Mozilla-Produkten

Rated 5 out of 5 stars (22)
5,150 users

XNote++

Persistent sticky notes associated to emails. You can fulltext search with constraints/email them/print/bookmark/copy to clipboard.

If you have a large screen, you can even display the notes outside of TB's main window, so it won't hide anything.

Rated 4 out of 5 stars (136)
14,552 users

Deutsches Wörterbuch (Schweiz)

Wörterbuch mit Schweizer Varianten der deutschen Schreibungen für die Rechtschreibprüfung in Mozilla-Produkten

Rated 5 out of 5 stars (3)
15,456 users

Automatic Dictionary

Remembers the language you use with a person or group of people, and switches the spellchecker language automatically for you next time. You do not have to do it manually any more. It remembers and switches it for you.

Rated 5 out of 5 stars (50)
3,146 users

Svenska Fria Ordlistan

Ett verktyg för stavningskontroll. Ordlistan har utvecklats ideellt utan stöd från de språkvårdande institutionerna. Använd den på egen risk.

Rated 5 out of 5 stars (22)
6,265 users

Dansk ordbog til stavekontrollen

Dansk ordbog til stavekontrollen i mails, forums, blogs osv. til Firefox, Thunderbird og andre Mozilla-programmer.

Rated 3 out of 5 stars (25)
7,226 users

Diccionario de Español/Chile

Diccionario corrector ortográfico de Español/Chile

Rated 5 out of 5 stars (4)
2,795 users

Tag Toolbar / Tag Popup

Add toolbar for toggling tags.

Rated 4 out of 5 stars (107)
12,469 users

English - Greek Spelling dictionary

Ελληνικό-Αγγλικό ορθογραφικό λεξικό για ευκολότερο ορθογραφικό έλεγχο σε δίγλωσσα κείμενα για Firefox - Thunderbird και Seamonkey

Rated 4 out of 5 stars (75)
3,216 users

AutoarchiveReloaded Featured

Archiviert E-Mails automatisch (Verbesserte Version vom "Autoarchive" Add-on)

Rated 4 out of 5 stars (30)
22,448 users

FiltaQuilla

Adds many new mail filter actions - launch a file, suppress notification, remove star or tag, mark replied or unread, copy as "read", append text to subject.

Rated 4 out of 5 stars (106)
17,660 users

FlexConfirmMail Stable

Confirm mail address and attachments based on flexible rules.

This is enterprise edition with less updates. Another edition for regular users:
https://addons.thunderbird.net/thunderbird/addon/flex-confirm-mail/

Rated 4 out of 5 stars (11)
19,707 users

Arabic spell-checking dictionary

Arabic spell-checking dictionary for Firefox 3 and Thunderbird 3 from Ayaspell.

Rated 4 out of 5 stars (43)
659 users

United States English Spellchecker

This dictionary is no longer maintained. Use this dictionary instead.

Rated 4 out of 5 stars (207)
3,885 users

Grammalecte [fr] (for Thunderbird)

Correcteur grammatical dédié à la langue française. Inclus : conjugueur, formateur de texte et dictionnaires orthographiques.

Rated 4 out of 5 stars (20)
6,635 users

Allow HTML Temp

Allows to have HTML temporarily enabled (and displayed) in the currently selected message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your settings).

Rated 4 out of 5 stars (90)
10,060 users

Brazilian Portuguese Dictionary (Former Spelling)

The same spellchecker shipped with the Brazilian version of Firefox, just using the former spelling (which is valid until January 1st 2016).

Rated 4 out of 5 stars (6)
721 users

Corector ortografic pentru limba română

Corector ortografic pentru limba română

Rated 4 out of 5 stars (40)
4,123 users