Record Search at FamilySearch Labs has recently added a collection of Texas death records covering 1890-1976. I've tried this and it's quite a good collection in terms of content and useability. Like all the indexed collections at Record Search, name variations are automatically retrieved in search results. I like the fact that there is a "Copy to Clipboard" link on the record details page, which in one click copies the details--and only the details--to the clipboard. On Ancestry.com, by comparison, you have to go to "View Printer-friendly" and then select and copy the details.
There is a link to a PDF version of the actual death certificate; however, that link seems not yet functional.
All things considered, this addition to Record Search is a solid "A" in my gradebook.