kitio.aiAdded Oct 29, 2026
OpenNN
FreeOpen-source C++ library for building neural networks
What is OpenNN?
OpenNN is a C++ library for building, training and deploying neural networks. It runs on CPUs and optionally on NVIDIA GPUs through CUDA, and is used inside engineering applications.
It provides dense, LSTM and convolutional networks as well as transformers, covering tabular data, time series, computer vision and sequence modeling. The site includes tutorials, benchmarks, an API reference and licensing information, and the source lives on GitHub.
Features
- Dense, LSTM and CNN networks
- Transformers
- CPU and CUDA GPU training
- Tutorials and benchmarks
Tags
Releases
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Organization
Artelnics
🇪🇸 Spain
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Free
- Paid options from
- 100% free
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Pros and cons
Pros
- High-performance C++
- Runs on CPU or GPU
- Covers several network types
Cons
- Requires C++ skills
- Smaller ecosystem than Python libraries
- Licensing page may apply to commercial use
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Q&A
What is OpenNN?
OpenNN is a C++ library for building, training and deploying neural networks. It runs on CPUs and optionally on NVIDIA GPUs through CUDA, and is used inside engineering applications.
How much does OpenNN cost?
OpenNN is 100% free.
Is there a free version of OpenNN?
Yes. OpenNN is completely free to use.
What are the main features of OpenNN?
Dense, LSTM and CNN networks, Transformers, CPU and CUDA GPU training, Tutorials and benchmarks.
Who makes OpenNN?
OpenNN is made by Artelnics.
What are the best alternatives to OpenNN?
Popular alternatives include Hugging Face, Ollama, Faiss.