Tokei

Tokei is a lightweight command-line utility designed to provide a fast way to gather various statistics about code. More precisely, the application can help developers find out the total number of files, lines of code, comments and blanks available within the source code. Most importantly, the information is displayed grouped, based on the programming language it was written.
According to the developer, the highlight of the tool stems from the fact that it can gather information from huge code lines in a matter of seconds. At the same time, the application can provide accurate code statistics as it handles multiple line comments and nested comments. The developer states that the tool does not account for the comments included in strings and can recognize – and ultimately organize – over 150 languages along with their specific variations.
The information gathered via this command-line utility can be exported to various output formats, including here JSON, CBOR and YAML. The direct advantage of these outputs is that the data can be easily stored, does not take too much space and can be easily reused. Lastly, it is worth mentioning that the tool can also act as a library that developers can integrate with their other projects.