Hi, I am developing a web application, which is still in initial stages.I have put it on web for public to use.Should I use uservoice for feedback(free account)? What are the alternatives?
You can create a mail account for receiving user feedback, for one. Another free alternative is Google docs and spreadsheets, which has a free form feature that will convert the feedback you received into entries in the spreadsheet.
SurveyMonkey is another free alternative... there are many offerings in the market, what I have named is just a few.
GetSatisfaction is the other big alternative if you're looking at "open forum" type feedback webapps, not that there probably aren't others I've never noticed. There's also more helpdesk-ish solutions out there, like Tender for example.
Of course, you could also put up a quick 'contact us' form for the time being if you're not expecting too much traffic at the start, and keep everything in your existing issue tracker.
One thing that I use on my website are comments and feedback from JS-Kit a free and simple solution for this kind of thing.
If you have your own web server, take a look at VoxPopuli . This is a web widget designed for hosting on your web site. It's free and open-source and it can be easily integrated into any CMS, forum system and alike.
There's a good answer on this topic for another question, which is basically to look at the wikipedia article (which has a comparison table).