I recently built and open sourced my programming language called "boson", it is An interpreted, dynamically-typed, multi-threaded, general purpose hobby programming language written in Rust.

Features:

1. Multiple Data Types: char, int, float, string, array, hashtable, bytes and buffer.
2. Airthmetic, Logical operations
3. Variables and Constants
4. Control and Looping structures
5. Functions and Lambda expressions
6. Threads and Multi-threading
7. Shell operator to run shell commands within the language statements
8. Some basic built-in functions
9. Iterators (psuedo iterators)
10. Byte code generation, serialization and loading

Link to GitHub repository