  The COVID-19 outbreak disrupted different organizations, employees and
students, who turned to teleconference applications to collaborate and
socialize even during the quarantine. Thus, the demand of teleconferencing
applications surged with mobile application downloads reaching the highest
number ever seen. However, some of the teleconference applications recently
suffered from several issues such as security, privacy, media quality,
reliability, capacity and technical difficulties. Thus, in this work, we
explore the opinions of different users towards different teleconference
applications. Firstly, posts on Twitter, known as tweets, about remote working
and different teleconference applications are extracted using different
keywords. Then, the extracted tweets are passed to sentiment classifier to
classify the tweets into positive and negative. Afterwards, the most important
features of different teleconference applications are extracted and analyzed.
Finally, we highlight the main strengths, drawbacks and challenges of different
teleconference applications.
