Solid SIP Client
Ive been using Blink Lite for quite some time now and really satisfied. Its also comes at the right price (free). The client has a wide list of codecs available (G.729 is the only missing but that never comes for free) HD Voice & Video calling, IM and Presence capabilities. Perhaps my favorite feature is OS X Address Book Integration.
Im giving it four stars because theres no echo cancellation. If you are talking to someone on speaker they will hear their voice, so it is better to use a headset. Overall, its a solid and stable SIP client, never had a problem with it. Its not obstructive and has a decent GUI. Cant ask for more.
carloxperex about Blink Lite