Greasemonkey (Chrome/Firefox/Opera/Safari/Android): The Windows download world is in a sad state. Lots of download sites, including popular ones like Sourceforge and Adobe, bundle extra crapware with their installers. AntiAdware is a simple script that blocks these, so you don't have to worry about getting tricked.

The Greasemonkey extension has reached version 2.0, and with it comes a lot of new features. However, be warned that this new release may break some of your existing userscripts.

Last week at Google I/O, the company's social network received a facelift. In some ways, it looks great, but it also introduced a slew of new problems. Enter userscripts to clean things up.

Chrome/Firefox with Greasemonkey: If you like to watch YouTube videos without all the clutter of the side bars, userscript Resize YouTube Player can help by automatically stretching the video you're watching to fill the entire browser window. This script also automatically changes the video's resolution (where available) to a higher quality, depending on how large your window is.

With Timeline rolling out, I want to take the chance to clean up my Facebook account. I could delete unwanted friends I added willy-nilly one by one, but that would take forever. Is there an easy way to do it?

Chrome/Firefox/Safari (User Script): If you're like me, you probably avoid most YouTube links because you don't know what's on the other end, and you don't want to waste time finding out. User script YouTube Link Title saves you from NSFW videos, rickrolls and things that just aren't worth your time by warning you what's on the other side.

Chrome/Firefox/Opera/Safari (Greasemonkey): If you're tired of plain text links that you have to copy and paste in your address bar, free Greasemonkey script Linkify Plus will turn all URLs and email addresses into clickable links.

Firefox/Chrome/Opera: Right before Google announced Google+ the company changed the bar across the top of all Google pages black. That bar now has links to your often-used Google services, and the Google+ Enhancer user script makes it more useful by adding unread item counts to the ones you use.

Firefox/Chrome/Opera: Interfacelift is one of our favourite sites for high-resolution wallpapers, but the added clicking required to get to the right size is a pain. InterfaceLift Resolutions Links is a userscript that adds direct links to each resolution right on the download page.

Android: Moving from the desktop, where you may have your favourite userscripts set up, to your Android phone, where you're missing all of them, can be painful. TamperMonkey is an Android browser that has full support for userscripts, and allows you to add and manage GreaseMonkey scripts to your Android device.

We all have a few favourite websites, even when they're not perfect. You don't necessarily have to live with those imperfections, however, as userscripts and userstyles provide you with the option to customise just about anything. Here's a look at how they work, how to use them, and even how to get started on making your own.

Chrome/Firefox/Opera (in Linux): Websites will often provide the apt-get command for installing a piece of software on Linux. This Greasemonkey script will turn those commands into clickable links, so you can install those apps with one click of the mouse.

Chrome: Chrome has some nice quick-access icons on its extension bar, but it only works if extensions put icons there. If you want to toggle other extensions on or off, these Chrome add-ons will help you do it from the address bar.

Chrome/Firefox/Opera/Safari: Whether you're searching for videos, images or torrents on the net, sometimes the first search engine you try doesn't give the best results. Try This Search On lets quickly run your search terms through a number of similar engines.

Most Browsers (Greasemonkey): If you find that certain sites on the internet are particularly useful, you can highlight whenever they appear in Google, Bing and Yahoo search results with a simple user script.

Firefox/Chrome/Internet Explorer: Tweetfilter is probably the most powerful filter you can find for your Twitter stream, unless you start decoding Twitter's API yourself. You can block phrases, retweets of certain users, particular web sites and services and nearly anything else.

Firefox/Chrome with Greasemonkey: BookInfoLine is a lightweight Greasemonkey script that adds in instant and automatic price comparison to book sellers' websites. Know immediately if a book is cheaper somewhere else.

If you're unhappy with Facebook's new small font size (or other annoyances), user script Better Facebook gives you over 75 extra options with which you can tweak Facebook to your liking.

Firefox with Greasemonkey: User script Gmail Labels Icons extends the Gmail label customisation from just colours to icons as well, so you can more easily tell your folders apart with a visual clue.