Top 23 C++ Fast Projects

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1. react-native-mmkv

   1 51 7,073 7.2 C++

   ⚡️ The fastest key/value storage for React Native. ~30x faster than AsyncStorage!

   

   Project mention: React Native Theming 2025! | dev.to | 2025-05-07

   ⚠️ Requires react-native-mmkv if storage is enabled.

2. InfluxDB

   www.influxdata.com featured

   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.

   

3. griddb

   2 78 2,423 7.4 C++

   GridDB is a next-generation open source database that makes time series IoT and big data fast,and easy.

   

4. glaze

   3 20 1,839 9.8 C++

   Extremely fast, in memory, JSON and interface library for modern C++

   

   Project mention: Enum class improvements for C++17, C++20 and C++23 | news.ycombinator.com | 2024-08-04

5. react-native-mmkv-storage

   4 9 1,684 7.8 C++

   An ultra fast (0.0002s read/write), small & encrypted mobile key-value storage framework for React Native written in C++ using JSI

   

6. dandere2x

   5 30 1,484 0.0 C++

   Dandere2x - Fast Waifu2x Video Upscaling.

   

7. marian

   6 3 1,286 0.0 C++

   Fast Neural Machine Translation in C++

   

8. react-native-fast-tflite

   7 1 904 6.8 C++

   🔥 High-performance TensorFlow Lite library for React Native with GPU acceleration

   

9. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

10. watcher

    8 17 736 9.3 C++

    Filesystem watcher. Works anywhere. Simple, efficient and friendly. (by e-dant)

    

    Project mention: Show HN: What two years of maintenance on a project I love looks like | news.ycombinator.com | 2024-08-25

11. smf

    9 0 730 0.0 C++

    Fastest RPC in the west

    

12. alpaca

    10 5 509 6.9 C++

    Serialization library written in C++17 - Pack C++ structs into a compact byte-array without any macros or boilerplate code (by p-ranav)

    

13. thread-pool

    11 12 496 6.5 C++

    A modern, fast, lightweight thread pool library based on C++20 (by DeveloperPaul123)

    

14. muparser

    12 2 451 7.2 C++

    muparser is a fast math parser library for C/C++ with (optional) OpenMP support.

    

15. json

    13 11 450 7.6 C++

    A C++11 library for parsing and serializing JSON to and from a DOM container in memory. (by boostorg)

    

16. Fulcrum

    14 23 398 8.7 C++

    A fast & nimble SPV Server for BCH, BTC, and LTC (by cculianu)

    

    Project mention: How to Build an AI Agent for Voice-Enabled Payments with the Tether WDK | dev.to | 2025-03-03

    Fulcrum Electrum: Fulcrum is a fast and light Simplified Payment Verification (SPV) server for Bitcoin Cash, Bitcoin BTC, and Litecoin.

17. fccf

    15 7 374 5.8 C++

    fccf: A command-line tool that quickly searches through C/C++ source code in a directory based on a search string and prints relevant code snippets that match the query.

    

18. marian-dev

    16 4 273 6.0 C++

    Fast Neural Machine Translation in C++ - development repository

    

19. grab

    17 2 259 0.0 C++

    experimental and very fast implementation of a grep (by stealth)

    

20. DFPlayerMini_Fast

    18 2 217 0.0 C++

    Fast and easy to understand Arduino library to use the DFPlayer Mini MP3 module from DFRobot.com. This is a huge improvement (both in terms of execution speed and simplicity) to the standard library provided by DFRobot.com.

    

21. rocFFT

    19 1 192 9.3 C++

    Next generation FFT implementation for ROCm

    

22. p4-fusion

    20 6 89 5.5 C++

    A fast Perforce to Git conversion tool written in C++ using Perforce Helix Core C++ API and Libgit2

    

23. GDNative-Ropesim

    21 3 75 7.3 C++

    A 2D verlet integration based rope simulation for Godot 4. Written in C++ using GDExtension for fast performance.

    

24. LruClockCache

    22 8 71 5.3 C++

    A low-latency LRU approximation cache in C++ using CLOCK second-chance algorithm. Multi level cache too. Up to 2.5 billion lookups per second.

    

25. wotpp

    23 2 70 0.0 C++

    A small macro language for producing and manipulating strings.

    

26. SaaSHub

    www.saashub.com featured

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    

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• Ask HN: Is there a “simple C++” language trimmed down to something “modern”?

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• griddb: NEW Data - star count:2051.0

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• A note from our sponsor - InfluxDB
  www.influxdata.com | 20 May 2025

  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. Learn more →

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Sponsored

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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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