Phone.com let us know that they have released a BlackBerry client for their cloud based phone service. The service works kind of like Google Voice but has more features and tends to be geared more at small businesses who do not have a PBX. The app lets you dial out from your virtual Phone.com number from your BlackBerry. It also gives you access to receive calls, receive/send SMS, voicemail, received faxes, connect to private conference call bridges, review calls, block calls, and more through that virtual number.
Phone.com Mobile Office for Blackberry is a free add-on for their service which starts as low as $4.88 a month. It can be downloaded at www.phone.com/apps but requires OS 4.6+. You can learn more about the service at www.phone.com.