Languages

C

• Pointers
• Beej C

Scheme

• SICP

Zig

• How a Zig IDE could work(HN)
• When Zig is safer and faster than Rust

JavaScript(Highly Recommended,State of the Art Stuff)

• Riptide,Webkit's GC
• B3 Jit Compiler
• Speculation in JSC
• Concurrent JavaScript, It Can Work
• Understanding GC in JSC From Scratch
• High Performance GC for C++
• Precise Stack Scanning in C++

React

• Understanding React Compiler
• React as a UI Runtime

Golang

• Dmitry Vyukov — Go scheduler: Implementing language with lightweight concurrency
• Proposal: Non-cooperative goroutine preemption
• Preemption in Go: an introduction, code

Python

• Gil removal and faster CPython project

Swift

• Swift for C++ Practitioners