This is not another Excel tips and tricks site (although there is inevitably some of that). The aim of Excel Liberation and its related blog is to encourage you to take advantage of web capabilities without being constrained by having to do things the 'Microsoft way'. You'll see a few techniques, tips and tricks for sure, as well as fully functional sample applications in various languages and frameworks.
All code is of course unprotected and free to re-use. For more details see Reusing code from this site. Examples are downloadable here.
Excel Liberation and related blog are licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.