Miracast 1.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Miracast lies within Multimedia Tools, more precisely Streaming Media.
This free program was originally developed by Wi-Fi Alliance. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The most popular version of the tool is 1.0.
From the developer:
Wi-Fi CERTIFIED Miracast ™ enables seamless display of multimedia content between Miracast ® devices. Miracast allows users to wirelessly share multimedia, including high-resolution pictures and high-definition (HD) video content between Wi-Fi devices, even if a Wi-Fi network is not available.
You may want to check out more software, such as AirServer, which might be similar to Miracast.