https://github.com/p-ranav/awesome-hpp
Довольно большой список.
Table of Contents
Argument Parsers
Audio
Benchmarking
Communication
Compression
Concurrency
Cryptography and Security
Databases
Data Formats
Data Mining, Machine Learning, and Deep Learning
Data Formatting and Presentation
Data Querying
Data Structures and Algorithms
Debugging
Deep Learning
Dependency Injection
Event Handling Mechanisms
File System
Functional Programming
Geometry, Graphics Processing, and Game Development
GPU
Graph
GUI
High-performance Computing
HTTP and the Web
Image Processing
Language Bindings
Language Development
Logging
Mathematics
Memory Management
Mocking
Networking
Optimization
Parsing
Parsing Expression Grammars
Portability Definitions
Reflection
Regular Expression
Robotics
Serialization
SIMD
Standard/Support Libraries
State Machine
Statistics
String Utilities
Templating Engines
Terminal Utilities
Testing Frameworks
Unicode
Units
Validation
Web Frameworks