Some sites will mine cryptocurrencies in the background without your permission. The CPU and energy costs could entail from entering these sites are not negligible.

Your online privacy depends on encryption. Learn more about how encryption works, why it's essential to a strong Web, and why it's worth protecting.

>> X-Ray Goggles allow you to see the building blocks that make up websites on the internet. >> Appmaker is a free tool for creating personal mobile apps, even if you don't know code! >> Popcorn Maker helps you easily remix web video, audio and images into cool mashups that you can embed on other websites. >> Thimble makes it ridiculously simple to create and share your own web pages.

Hola accelerates the web using a combination of technologies - caching, multiple sources, compression, P2P protocols and more. For initial Hola users, the Internet will be fast, but as more people install Hola, the web will get even faster. Another nice side effect of Hola is that it provides various levels of anonymity, that will enable you to view any content from anywhere...

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The Creative Collective is a community of artists and designers inspired by the Mozilla ideals of openness, innovation and participation.

If you've ever designed for the Web, you know what a pain it is to get your work to look right in Internet Explorer 6. It's outdated, and it's not standards compliant, so a design that looks good in Firefox, Chrome, or Safari might look horrible in IE6 (and subsequent versions for that matter). The good news is that Microsoft has started the countdown to the end with a map that shows IE6 browser share around the world. Twelve percent of the world still uses the browser as of February 2011, with a big chunk of that from China.

Poyozo is an automatic, personal diary system to help reclaim and consolidate your ever-expanding digital life with simple visualizations that you can use every day. Poyozo gives you your own data back by downloading the information you're currently giving to the web on to your own computer. You can opt-in to importing your data from Facebook, Twitter, Foursquare, Last.fm, Google Calendar, any email service, any RSS feed, Flickr, Wesabe, Listit, Skydeck, Dopplr, your Firefox browsing history, the local weather, and your location, allowing you to access all of this personal data as easily as the companies that run these services can.

Facette is a suite of tools allows Delicious users to organize their bookmarks using facets. Facette offers a bookmarks browser that automatically organizes tags in a user's account. Facette also offers an enhanced version of Delicious' tagging tool. Firefox plugin required

The Wild Fox project ('Wild Fox', or Wx for short), is a project aimed at releasing builds of Firefox which include features the Firefox builds do not include, including AVC (h.264) support with HTML 5 video.

CodeBurner makes valuable reference material for HTML and CSS available right in your browser. CodeBurner is a suite of tools for web developers, that provides reference material for HTML and CSS, integrated with a range of popular development environments. 1Install CodeBurner 2Type an HTML element or CSS property in the Search field, or click an item on the page 3View browser compatibility info, syntax, code samples and more

The Universal Edit Button is a green pencil icon in the address bar that indicates a web page is editable. It is similar to the orange "broadcast" RSS icon that indicates there is an RSS feed available.

Appalachian is a Firefox add-on that adds the ability to manage and use several OpenIDs to ease the login parts of your browsing experience. Learn more about OpenID.

The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.

list.it is a simple, free, open-source note-keeping tool to help you manage the tons of little information bits you need to keep track of each day.

browser add-on that lets you save your favorite pages to your personal web and improves your search by harnessing your Facebook social network.

online password manager and form filler that makes web browsing easier and more secure. Access your data anywhere! Access and manage your data at home, work, or at an Internet Cafe online at LastPass.com.

DashBlog lets you quickly collect videos, images, text/quotes, songs and screen-captures from any web page and publish them to your blog (word press, blogger/blogspot, tumblr) and/or twitter.

In short, Jetpack is an API for allowing you to write Firefox add-ons using the web technologies you already know.