Hello,
The main way to be able to let others users view and fill out forms is using
InfoPath Forms Services:
http://office.microsoft.com/en-us/formsserver/FX100490391033.aspx
which costs $$$ unless you've already got Sharepoint Enterprise licenses.
Otherwise each user needs to have a copy of InfoPath on their PCs.
Gavin.

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> I would like to know whether infopath can be view and be used by the user who
> are not using/ installing microsoft office or more specified microsoft
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>
> Thank you