The week was a fairly busy one for the HTML5 space as a number of players made moves toward implementing or embracing the markup language. Here’s a look at some of the highlights.

First up, Amazon started allowing developers to charge the same amount for HTML5 Web applications as they do for native apps on the Kindle Fire app store. Additionally, HTML5 apps will also be included as part of the “Free App of the Day” promotion, offering them greater exposure as well. Perhaps best of all, Web developers no longer need to specially package their apps for the Kindle App store and can instead submit the URL of their app to Amazon.

Next, Workday decided to make the shift from Flash to HTML5 in pursuit of an improved user experience for its SaaS (News – Alert) platform. Workday 21 features 65 new features which are largely based on user feedback, while also pushing the entire platform to a single line of code for development and production. As such, it boasts not only greater device compatibility, but superior performance as well.

In other news, Google (News – Alert) unlocked its Chromecast SDK this week, allowing third-party developers to create native and HTML5 apps for Chromecast devices. As such, it’s likely there will be an influx of apps customized to send content to the TV screen very soon. As it stands, simple apps can be played back via the Chromecast media player, which is able to handle HTML5 media content.

Meanwhile, secure mobile container solutions vendor Excitor (News – Alert) partnered with SOTI, a provider of enterprise mobility management and BYOD policy management. As such, Excitor DME will now be included with SOTI’s EMM solution, SOTI MobiControl, allowing Excitor to leverage device management features and manage non-HTML5 apps.

Finally, the Japanese mobile Internet engineering company behind the Monaca HTML5 hybrid app development platform, released a new custom elements-based HTML5 UI framework for building mobile app front ends. Called Onsen UI, the framework allows developers to offer advanced user interfaces with hybrid apps.

That’s all for this week, but you can always head over to the HTML5 Report for more news in this space.