There are a few factual errors in the list: The Telegram clients seem to be open source, but the server is proprietary. WhatsApp does have a native client for a

There are a few factual errors in the list: The Telegram clients seem to be open source, but the server is proprietary. WhatsApp does have a native client for a few platforms; nobody knows about it because everyone just uses WhatsApp Web. WhatsApp has animated GIFs.