Web Application, how?

[Yasuaki Kudo]

Hi!

So my friend and I are considering starting a worker cooperative, providing 
customized data management (such as CRM) tools for cooperative enterprises, etc.

It seems many existing "modern" web applications are just facelift of what used 
to be Microsoft Access custom forms - the pages may have HTML buttons and 
pictures instead of Microsoft's Win32 controls...

Arguably HTML is more open standard than Proprietary Microsoft APIs.  But then 
again, we are just dismayed by looking at barrage of Javascript "frameworks" 
etc, the worst case-in-points of Do-o-Cracy. 

For the development of web-based applications, what is the current cleanest or 
the most recommended solution that is FSF-approved?

-Yasu