Evernote doesn’t have an official client for Linux, we list the best unofficial Evernote clients for Linux.
Franz is an open source application that combines different messaging services like WhatsApp, WeChat, Facebook Messenger, Gmail, Telegram, Skype, Slack and other chat applications in one application.
Artha is a feature rich thesaurus application available for all major Linux distributions.
An unofficial WeChat client that you can install and use on Ubuntu and other Linux distributions.
If you are looking for a simple calendar application in Linux, try Kalendar. It’s free and open source.