For travel to nearby New Jersey, including Collingswood and Haddonfield, PATCO (856/772-6900, www.ridepatco.org [1]) offers regular service from several Center City stations. Camden Riverlink (215/925-5465, www.riverlinkferry.org [2]) offers a scenic option for getting across the river to Camden. It departs every hour on the hour from Philadelphia [3] and on the half hour from Camden, with plenty of additional departures during events at the Susquehana Bank Center. It runs May–September and costs $6 for adults and $5 for children and seniors.
Links:
[1] http://www.ridepatco.org
[2] http://www.riverlinkferry.org
[3] http://www.moon.com/destinations/philadelphia/discover-philadelphia