The traditional CSS tools may be behind in implementation of the CSS3 standards; but online there are nearly a dozen good and free  tools for implementing CSS3. Already we have noted the utility of CSSmatic. Another robust free online CSS3 Generator tool is CSS3Maker.
css3maker
CSS3Maker for Animations
The code generation tool for Animations is quite clever. First you select keyframe Start settings for the eight animation options. As you make the changes to an option CSS3Maker shows the changes in the animated object. Then select the keyframe end point and its associated settings.  Press on the View Animation button and CSS3maker shows the animation live. Press the Download button to get the generated code. Do this again to get the next step in the animation – the End settings become the new Start ones.  And so on for a multi-keyframe  animation.

CSS3 Maker has generators for CSS3 Transforms and CSS3 Transitions. Again the interface is well done with two settings – how the object looks in Normal mode and then what happens in the Hover state. Set these up and then just hover over the message to see the transition. The Download button generates the required CSS code as part of a complete demo file named CSS3maker.html.
css3makertransitions

CSSMaker3 supports one of the broadest sets of CSS3 generators: one each for Box Shadow, Text Shadow, Text Rotate, Gradient Fills, CSS Translate, CSS Transitions, CSS Animations, Border Radius, RGBA and @FontFace. CSS3maker has a helpful Browser Compatibility with one caveat – it is a bit out of date as it does not show IE for CSS Transitions and  does not show Chrome or Safari or Opera for gradients.

However, CSSmakers 3 has a very valuable CSS Gallery  list on its Home Page.
css3makerlinks

This gallery shows a number of the other CSS3 and HTML5 online sites that are available to users. This is a great resource for Web Developers.

Summary

CSS3maker provides one of the best test and generate selection of CSS3 tools available online. Go here for the CSS code for some tricky routines.Yes, it would be nice if the CSS3Maker’s generators gave users the choice of CSS file or the complete HTML+CSS file download. But the CSS3 generator panels are well designed and they deliver the code needed.