This study aims to evaluate online language exchange platforms and its main focus is on the website named "www.free4talk.com" as an example. The theoretical framework is based on self-directed learning, e-tandem language learning, community of inquiry and expressive language competency. Interviews with the founder, administrator and some of the users of the website are conducted and a 5- point Likert type assessment tool with 26 items and 7 dimensions is created with the help of a literature review at the same time. The findings are obtained through analysing the data collected by applying the instrument to 413 people on the website. The research reveals that this platform presents a free environment with a certain amount of safety and it contributes greatly to foreign language development of learners in terms of providing an opportunity for language practice, an undeniable improvement in expressive language competency and a social atmosphere that offers a source of motivation for language learning for both people who finished their formal foreign language training and for students who are still studying at schools.