https://addons.mozilla.org/en-US/firefox/addon/2691/
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A developer tool for interacting with web services and other web resources that lets you make HTTP requests, set the entity body, and content type. This allows you to interact with web services and inspect the results...
very neat and useful indeed!
https://addons.mozilla.org/fr/firefox/addon/1158/
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TAW3 with a click allows to verify, with just a click, the accessibility of the Web sites that you are visiting, by means of the TAW3 online service (www.tawdis.net) and making use of the W3C Web Content Accessibility Guidelines (WCAG 1.0 and WCAG 2.0).
http://code.google.com/intl/fr/speed/page-speed/
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Google releases Page Speed, a YSlow-like firefox extension. Webmasters and web developers can use Page Speed to evaluate the performance of their web pages and to get suggestions on how to improve them.
The description says: "Offers the possibility to display documents in browser window.". A great addon for when debugging XML / json / whatever content type Firefox wants to open in an external editor
Zemanta is a text enrichment tool. Packaged as a firefox extension, it helps adding tags, photos, links to the texts you type in your web browser. It is based on "natural language processing, machine learning and fine tuning", and would take profit out of SemWeb technologies.
A firefox extension targeted at improving the accessibility of the websites. It includes a captcha reader, high contrast page viewing, link and focus highlighting, etc.
Internet Explorer 7 scores an abysmal 90522ms. (...) IE8-beta2 scored at 9542ms. But, for reference, in the same virtual environment Firefox "Minefield" was still able to pull off 1873ms. So, as while still no where near as fast as the other guys, IE8 is lightyears ahead of IE7 in its javascript performance.
https://starkravingfinkle.org/blog/2008/10/fennec-m9-user-experience-alpha/
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Mozilla is releasing desktop versions of Fennec, the mobile version of Firefox targeted at being the concurrent of Iphone's Safari. As for the first tests, the user experience is rather convenient. It's w00t to be able to use flash on mobile devices!
https://www.azarask.in/projects/algorithm-ink/
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Algorithm Ink is a port and extension of Context Free by Aza Raskin. The original grammar was originally conceived of by Chris Coyne. Algorithm Ink uses open-web, standards-based tools: no plugins required. You can even right-click to save the drawings. The caveat is that Firefox 3, and Opera 9.5 are the only browsers to fully support Canvas, so it may run slower on Safari, and not at all in Internet Explorer.
https://symfony.com/legacy/wiki/sfFirePHPPlugin
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FirePHP enables you to print to your Firebug Console using a simple PHP function call. What makes FirePHP different? All data is sent via a set of X-FirePHP-Data response headers. This means that the debugging data will not interfere with the content on your page. Thus FirePHP is ideally suited for AJAX development.
YSlow analyzes any web page and generates a grade for each rule and an overall grade. If a page can be improved, YSlow lists the specific changes to be made.
https://johnresig.com/blog/javascript-18-progress/
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In case you haven't been following the progress being made on JavaScript 1.8 here's a quick overview of what's already landed in the latest Firefox 3 nightlies.
Astuce (pour développeurs web) concernant le correcteur d'orthographe de Firefox - Carnet Web de Pascal
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https://www.chevrel.org/carnet/index.php?2007/01/29/642-astuce-pour-developpeurs-web-concernant-le-correcteur-d-orthographe-de-firefox
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si en tant que développeurs vous désirez que des champs input soient aussi vérifiés, vous pouvez ajouter l'attribut spellcheck="true" à l'input
https://www-128.ibm.com/developerworks/xml/library/x-xformsfirefox/
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Using the experimental Mozilla XForms extension, you can process XForms in your browser today. While not yet deployed widely enough for use on the public Internet, XForms may be suitable for some intranet applications. This article demonstrates basic XForms processing as currently supported by Firefox and the Mozilla XForms plug-in.