Aerochat is a chat client for Discord, styled to look like Windows Live Messenger 2009.
Aerochat exists simply because of a lack of options. A lot of people have great looking Windows themes, but then go and use Discord which looks completely out of place. Aerochat aims to fix that.
Yes. Aerochat stores your token using the system's keychain, which guarantees encryption. Aerochat refuses to store the token if encryption is unavailable. Neither I, nor any other contributors, can access your token.
Yes. You can view the source code on GitHub.
Aerochat is still in early development, so there are a few features missing. However, the most important features are implemented, such as servers, DMs and more. If any of these features are important to you, feel free to contribute to the Aerochat project or not use Aerochat:
It depends on what your use case is. Discord's Terms of Service prohibits against the usage of third-party clients (like Aerochat), so if you value your Discord account, you should not install Aerochat. Aerochat is still in early development, which means there are features missing that would be considered standard in something like Discord.