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Top 23 Cpp11 Open-Source 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
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Project mention: Modern C++ – A collection of resources on modern C++ | news.ycombinator.com | 2024-08-15
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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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Project mention: Flecs – A fast entity component system (ECS) for C and C++ | news.ycombinator.com | 2024-10-19
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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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SaaSHub
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Cpp11 discussion
Cpp11 related posts
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🚀 Zyn 1.0.2 Released — Smarter Builds, Powerful Debugging, Cleaner Workflow
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Faster and More Reliable Hugging Face Downloads Using aria2 and GNU Parallel
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The DOS 3.3 Sys.com Bug Hunt
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Making a performant audio capture system⚡🚀💨
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C: Simple Defer, Ready to Use
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Flecs – A fast entity component system (ECS) for C and C++
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Metalang99: Full-Blown Preprocessor Metaprogramming
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A note from our sponsor - SaaSHub
www.saashub.com | 16 May 2025
Index
What are some of the best open-source Cpp11 projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | CPlusPlusThings | 41,087 |
| 2 | aria2 | 37,542 |
| 3 | spdlog | 26,146 |
| 4 | modern-cpp-tutorial | 24,752 |
| 5 | modern-cpp-features | 20,410 |
| 6 | simdjson | 20,284 |
| 7 | cpp-httplib | 14,248 |
| 8 | Modern-CPP-Programming | 13,204 |
| 9 | awesome-modern-cpp | 12,298 |
| 10 | C++ REST SDK | 8,157 |
| 11 | flecs | 7,028 |
| 12 | doctest | 6,213 |
| 13 | LeetCode-Solutions | 4,875 |
| 14 | cppinsights | 4,261 |
| 15 | awesome-hpp | 3,731 |
| 16 | evpp | 3,668 |
| 17 | CLI11 | 3,621 |
| 18 | cpp-cheatsheet | 3,333 |
| 19 | CppPrimer | 3,320 |
| 20 | 100ProjectsOfCode | 3,293 |
| 21 | indicators | 3,179 |
| 22 | cmake-cookbook | 2,769 |
| 23 | tabulate | 2,009 |
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