www.bondsonline.com

Good news and research features. When buying, commissions are in the bond's price.

www.csfbdirect.com

Commissions are low: $3 per $1,000 muni bond. Decent screener, though sectors are left out.

www.investinginbonds.com

Muni quote tool gives an accurate picture of the price range for bonds. Good calculator for taxable-equivalent yield.

www.munidirect.com

Commissions range from $2.50 to $5 per $1,000 bond. Comprehensive screener.

www.munistatements.com

Muni prospectuses and fiscal reports for $7 and up.

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