Snapchat now offers a way to use the application on your PC through a browser. The web version of Snapchat is however not available on all browsers; it's currently only available on Chrome, Safari, or Microsoft Edge.
You'll also need to use these browsers on a computer and not on your phone or tablet. The web version also syncs conversations with the app, so you won't miss anything if you switch between platforms.
Like WhatsApp and Telegram, you need to authenticate the web version using your mobile phone. This guide will walk you through how to set up and use Snapchat Web.