Many friends may not have heard of FFmpeg, but you must have used one of these software: Baofeng Yingyin, QQ Yingyin, KMP, GOM Player, PotPlayer (2010), KMPlayer. FFmpeg is open source software, and software that uses FFmpeg in accordance with the agreement must also be open source. However, these audio and video software do not comply with the agreement, so they were put on FFmpeg's "blacklist".
Piwik (Matomo) free and open source PHP statistics system - easy to install and powerful, comparable to Google statistics
When many people think of statistics, they are limited to Google Analytics, Baidu Statistics, webmaster statistics, etc. These types of statistics are systems developed by third-party companies such as search engines. Naturally, they are useless in terms of functionality and ease of use, but the only One problem is that statistical data is stored on a third-party server, which poses certain risks for some websites with strong confidentiality.