Web Therapy will return for ten more episodes in 2013.
The series follows Fiona Wallice (Kudrow), a therapist who meets with her patients through Skype.
Web Therapy was first shown online and then adapted to a television series in 2011.
Guest stars for the third season include Matt LeBlanc, Meg Ryan and Jesse Tyler Ferguson. Previous guest stars included Meryl Streep, Alan Cumming and Courteney Cox.
In the last season, Kudrow's character began to "rethink her whole life" but might not become a better person.
"This is who she is - a terrible person," Kudrow said of her character.
Watch a promo for Web Therapy below: