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Top 23 C++ Cpp11 Projects
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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aria2
aria2 is a lightweight multi-protocol & multi-source, cross platform download utility operated in command-line. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink.
Project mention: Faster and More Reliable Hugging Face Downloads Using aria2 and GNU Parallel | dev.to | 2025-03-22aria2: A lightweight multi-protocol & multi-source command-line download utility.
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Project mention: 🚀 Zyn 1.0.2 Released — Smarter Builds, Powerful Debugging, Cleaner Workflow | dev.to | 2025-05-11
📦 Add Dependencies with zyn add You can now easily add Git-based dependencies to your project using a simple command: zyn add https://github.com/gabime/spdlog
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modern-cpp-tutorial
📚 Modern C++ Tutorial: C++11/14/17/20 On the Fly | https://changkun.de/modern-cpp/
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simdjson
Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks
Project mention: Make Ubuntu packages 90% faster by rebuilding them | news.ycombinator.com | 2025-03-18I think parsing once into a faster format (sqlite3 or parquet) would be more beneficial.
https://simdjson.org/
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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C++ REST SDK
The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services.
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catch2 has become fairly bloated. doctest takes all of the best parts of catch2 without all the bloat and the end result is a test framework that is literally over 10x faster than catch2. It's also like 90% compatible with catch2 so porting your tests to it is pretty easy.
Especially if you have a build process that always runs your unit tests, it's nice to have a very fast test/compile/debug loop.
https://github.com/doctest/doctest
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evpp
A modern C++ network library for developing high performance network services in TCP/UDP/HTTP protocols.
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CLI11
CLI11 is a command line parser for C++11 and beyond that provides a rich feature set with a simple and intuitive interface.
> I switched from C++ to C about 7 years ago and never looked back
I'm definitely considering the same, and you're right - it's not C++ itself that appeals to me at all, it's the libraries. I'm not sure what C libraries I'd use for collections (instead of the STL and Abseil [0]), or in lieu of CLI11 [1] or Dear ImGui [2].
[0] https://abseil.io/about/design/swisstables
[1] https://github.com/CLIUtils/CLI11
[2] https://github.com/ocornut/imgui
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fast_float
Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, Chromium, Redis and WebKit/Safari
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For example, here's the documentation[2] for a thread safe heterogeneous thread-aware memory and header[3] for the underlying thread safe pool.
It uses a mutex, but at a glance only when it needs to consult the fallback allocator (which could involve a system call). If you knew that the fallback allocator were a pre-allocated arena, maybe you could do with atomics only. The free list is already lock-free, and so too could be the block list.
[1]: https://github.com/bloomberg/bde/wiki/BDE-Allocator-model
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
C++ Cpp11 discussion
C++ Cpp11 related posts
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🚀 Zyn 1.0.2 Released — Smarter Builds, Powerful Debugging, Cleaner Workflow
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Making a performant audio capture system⚡🚀💨
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Show HN: FkYAML, a C++ Header-Only Library for YAML
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A Comparison of Arenas in Rust
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Micro-Gl Public Headers Only C++11 CPU Vector Graphics. No Std-Lib, FPU or GPU
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Build a State Machine in Under 100 Lines of C++11 – Full Source Code on GitHub
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Finding Mona Lisa in the Game of Life
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A note from our sponsor - InfluxDB
www.influxdata.com | 18 May 2025
Index
What are some of the best open-source Cpp11 projects in C++? This list will help you:
# | Project | Stars |
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1 | CPlusPlusThings | 41,143 |
2 | aria2 | 37,611 |
3 | spdlog | 26,146 |
4 | modern-cpp-tutorial | 24,752 |
5 | simdjson | 20,382 |
6 | cpp-httplib | 14,288 |
7 | Modern-CPP-Programming | 13,217 |
8 | C++ REST SDK | 8,157 |
9 | doctest | 6,213 |
10 | LeetCode-Solutions | 4,875 |
11 | cppinsights | 4,265 |
12 | evpp | 3,668 |
13 | CLI11 | 3,621 |
14 | cpp-cheatsheet | 3,333 |
15 | CppPrimer | 3,320 |
16 | indicators | 3,179 |
17 | cmake-cookbook | 2,769 |
18 | tabulate | 2,009 |
19 | PEGTL | 2,004 |
20 | mio | 1,790 |
21 | fast_float | 1,768 |
22 | hana | 1,756 |
23 | BDE | 1,711 |