Advanced Computing Solutions

Building the future with high-performance Rust libraries for scientific computing, artificial intelligence, and quantum computing

0 Concurrent Projects
0 Million+ Lines of Code
0 % Open Source
πŸ“ Based in Estonia, EU

About COOLJAPAN OÜ

Leading the Rust ecosystem in scientific and advanced computing

🎯 Our Mission

We develop enterprise-grade, open-source software libraries in Rust, bringing memory safety, performance, and fearless concurrency to scientific computing, AI, and quantum computing domains.

πŸ“Š Scale & Impact

With over 15 million source lines of code across 41 concurrent projects, we maintain one of the largest open-source Rust ecosystems focused on advanced computing solutions.

πŸ‘¨β€πŸ’Ό Leadership

Tetsuya Kitahata, CEO and principal developer, leads our engineering efforts. All projects are publicly available on GitHub under permissive open-source licenses.

Featured Open Source Projects

Production-ready libraries powering the next generation of computing

SciRS2

⭐ 175

Comprehensive scientific computing and AI/ML foundation in Rust. SciPy-compatible API with Rust's performance, safety, and concurrency capabilities.

  • 2M+ lines of code, 11,800+ tests
  • SIMD acceleration (10-100x speedup)
  • 23 independent crates for modular use
  • Auto-differentiation, neural networks, computer vision
View on GitHub β†’
πŸ“„ Documentation (Japanese):
SciRS PDF SciRS2 PDF

OxiRS

⭐ 46

Rust-native semantic web platform. Alternative to Apache Jena/Fuseki with SPARQL 1.2 and GraphQL support from the same dataset.

  • 30+ crates, 8,690 tests passing
  • 95%+ documentation coverage
  • AI integration (vector search, LLM)
  • GeoSPARQL, SHACL validation, ReBAC authorization
View on GitHub β†’

OxiZ

⭐ 42

High-performance SMT solver in pure Rust. Reimplements Z3 with ~90%+ feature parity at ~25% codebase size. No C/C++ dependencies.

  • 192k LoC, 3,823 tests, 13 crates
  • CDCL(T), EUF, LRA, LIA, BV, Arrays, Strings
  • WebAssembly ready, proof generation
  • MaxSAT, OMT, CHC solving with PDR/IC3
View on GitHub β†’

NumRS2

⭐ 37

High-performance numerical computing library inspired by NumPy. Foundation for scientific computing in Rust with ergonomic APIs.

  • N-dimensional arrays with broadcasting
  • SIMD-accelerated operations
  • Integration with SciRS2 ecosystem
  • Zero-cost abstractions
View on GitHub β†’

TensorLogic

⭐ 33

Logic-to-tensor compiler transforming logical rules into tensor equations for neural-symbolic AI. Bridges symbolic reasoning with neural networks.

  • 2,111 tests (100% pass rate)
  • SIMD acceleration (2-4x speedup)
  • 11 specialized crates
  • Multi-strategy compilation (soft, hard, fuzzy, probabilistic)
View on GitHub β†’

QuantRS2

⭐ 25

Quantum computing framework with type-safe circuit design. Supports 30+ qubit simulations with SIMD and GPU acceleration.

  • Grover, QFT, QAOA, VQE algorithms
  • Noise models & error correction
  • IBM Quantum, D-Wave, AWS Braket integration
  • Tensor network & quantum annealing
View on GitHub β†’

VoiRS

⭐ 23

Pure-Rust neural speech synthesis framework. High-performance Text-to-Speech (TTS) with VITS, HiFi-GAN, and DiffWave vocoder.

  • MOS 4.4+ naturalness, 98%+ intelligibility
  • Streaming synthesis (sub-0.3Γ— RTF)
  • 20+ languages, SSML support
  • Cross-platform (x86_64, aarch64, WASM, CUDA)
View on GitHub β†’

OxiGDAL

⭐ 40

Pure Rust geospatial data abstraction library (GDAL replacement). Read and write raster/vector geospatial formats without C dependencies.

  • Pure Rust, no C/C++ dependencies
  • Raster and vector format support
  • Coordinate reference system transformations
  • GeoTIFF, Shapefile, GeoJSON, and more
View on GitHub β†’

OxiBLAS

⭐ 19

Production-grade pure Rust BLAS/LAPACK implementation. Drop-in replacement for Fortran BLAS with competitive performance.

  • Pure Rust, no Fortran dependencies
  • BLAS Level 1/2/3 and LAPACK routines
  • SIMD-accelerated kernels
  • Seamless SciRS2 ecosystem integration
View on GitHub β†’

ToRSh

⭐ 16

PyTorch-compatible deep learning framework entirely in Rust. Tensor operations with sharding for distributed training.

  • 2-3x faster than PyTorch, 50% less memory
  • 100% SciRS2 integration coverage
  • Single binary deployment (no Python runtime)
  • GNN, time-series, computer vision modules
View on GitHub β†’

OxiMedia

⭐ 54

Sovereign Media Framework β€” pure Rust reconstruction of both FFmpeg and OpenCV, unified in a single cohesive framework. Patent-free, memory-safe multimedia processing.

  • FFmpeg-compatible multimedia processing
  • OpenCV-compatible computer vision
  • Pure Rust, no C/C++ dependencies
  • Unified API for audio, video, and image
View on GitHub β†’

SkleaRS

⭐ 12

scikit-learn reimplemented in Rust. Combines scikit-learn's intuitive API with Rust's performance and memory safety.

  • 10,013 tests passing
  • 3-100x performance improvement
  • SIMD optimization, multi-threading
  • Linear models, SVM, neural networks, clustering
View on GitHub β†’

Legalis-RS

⭐ 9

Legal statute parsing and simulation framework. Transforms legal documents into machine-verifiable code while preserving judicial discretion boundaries.

  • 897k LoC, 14,705 tests, 46 crates
  • 23 jurisdictions (Civil, Common, Islamic Law)
  • LLM integration, formal verification
  • Smart contract export, RDF/Linked Data
View on GitHub β†’

OxiFFT

⭐ 9

99% Rust port of FFTW3. High-performance Fast Fourier Transform library with near-native FFTW3 performance.

  • 99% Rust implementation of FFTW3
  • 1D/2D/3D transforms
  • SIMD-optimized butterfly operations
  • Real and complex FFT support
View on GitHub β†’

RS3GW

⭐ 7

Ultra-lightweight S3 gateway for AI/HPC workloads. Minimal overhead S3-compatible object storage proxy.

  • Ultra-lightweight design for AI/HPC
  • S3-compatible API
  • High-throughput data streaming
  • Minimal resource footprint
View on GitHub β†’

OxiRAG

⭐ 7

Four-layer RAG engine with SMT-based logic verification. Combines vector search, draft speculation, logic verification, and knowledge graphs.

  • Speculative RAG with SLM verification
  • OxiZ SMT solver integration
  • GraphRAG with entity extraction
  • Context-aware prefix caching, on-the-fly distillation
View on GitHub β†’

OptiRS

⭐ 7

Comprehensive optimization library for ML. Gradient-based, evolutionary, and constrained optimization algorithms.

  • Gradient-based and derivative-free methods
  • Evolutionary and genetic algorithms
  • Constrained optimization support
  • ML hyperparameter tuning integration
View on GitHub β†’

PandRS

⭐ 7

DataFrame library inspired by pandas. Ergonomic data manipulation and analysis with Rust's performance and type safety.

  • pandas-compatible API design
  • Columnar data storage
  • GroupBy, merge, pivot operations
  • CSV, JSON, Parquet I/O support
View on GitHub β†’

IPFRS

⭐ 6

Inter-Planet File RUST System. Decentralized file storage and retrieval with content-addressable architecture.

  • Content-addressable storage
  • Peer-to-peer networking
  • DAG-based data structures
  • Pure Rust implementation
View on GitHub β†’

Kizzasi

⭐ 6

Rust-native AGSP for continuous signal streams. Adaptive generalized signal processing framework.

  • Continuous signal stream processing
  • Adaptive filtering algorithms
  • Real-time processing capabilities
  • Integration with SciRS2 ecosystem
View on GitHub β†’

Spintronics

⭐ 5

Spin dynamics simulation in magnetic and topological materials. Micromagnetic and atomistic spin simulations.

  • Micromagnetic simulations
  • Atomistic spin dynamics
  • Topological material modeling
  • GPU-accelerated computations
View on GitHub β†’

OxiCode

⭐ 6

Binary zero-fluff encoder/decoder. Compact binary serialization with minimal overhead.

  • Zero-fluff binary encoding
  • Minimal serialization overhead
  • Schema evolution support
  • High-throughput encode/decode
View on GitHub β†’

TrustformeRS

⭐ 5

High-performance Rust implementation of Hugging Face Transformers. 21+ architectures with 1.35x faster BERT inference.

  • 1,742+ tests (100% pass rate)
  • FlashAttention, INT8/INT4 quantization
  • WebAssembly (566KB), mobile support
  • Training infrastructure with ZeRO optimization
View on GitHub β†’

OxiLean

⭐ 4

Memory-safe, high-performance Interactive Theorem Prover (ITP) natively integrated into the Rust ecosystem. Inspired by Lean 4, bringing formal verification to Rust.

  • Lean 4-inspired type theory and tactics
  • Native Rust ecosystem integration
  • OxiZ SMT solver backend integration
  • Dependent types and proof automation
View on GitHub β†’

OxiArc

⭐ 6

The Oxidized Archiver β€” pure Rust implementation of archive and compression formats with core algorithms implemented from scratch.

  • Pure Rust, no C/C++ dependencies
  • ZIP, TAR, LHA, GZ format support
  • Core compression algorithms from scratch
  • Streaming and in-memory modes
View on GitHub β†’

OxiFY

⭐ 5

Graph-based LLM workflow orchestration platform built in Rust. Compose complex AI applications using DAGs with a type-safe, modular approach.

  • Directed acyclic graph (DAG) workflows
  • Type-safe LLM pipeline composition
  • Modular node-based architecture
  • Rust-native Dify/Celery alternative
View on GitHub β†’

TenRSo

⭐ 4

Production-grade Rust-native tensor stack with generalized contraction, sparse/low-rank mixed execution, and out-of-core processing.

  • Generalized tensor contraction + planner
  • CP/Tucker/TT decompositions
  • Sparse and low-rank mixed execution
  • Out-of-core processing for large data
View on GitHub β†’

MeCrab

⭐ 4

Pure Rust morphological analyzer compatible with MeCab dictionaries (IPADIC format). Japanese text tokenization and analysis.

  • MeCab-compatible IPADIC support
  • Japanese text segmentation
  • Pure Rust, no C dependencies
  • High-performance Viterbi algorithm
View on GitHub β†’

CeleRS

⭐ 4

Production-ready, Celery-compatible distributed task queue library for Rust. Binary-level protocol compatibility with Python Celery.

  • Celery protocol compatibility
  • Distributed task scheduling
  • Python Celery interoperability
  • Built from scratch in Rust
View on GitHub β†’

TenFlowers

⭐ 3

Pure Rust implementation of TensorFlow. Full-featured machine learning framework with Rust's safety and performance.

  • TensorFlow-compatible API
  • Pure Rust ML framework
  • Eager and graph execution modes
  • Rust safety guarantees
View on GitHub β†’

Technology Focus

Comprehensive solutions across the computing spectrum

πŸ”¬

Scientific Computing

Linear algebra, FFT, signal processing, optimization, and numerical integration with SIMD acceleration

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Artificial Intelligence

Neural networks, transformers, auto-differentiation, and graph processing for production ML

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Quantum Computing

Circuit simulation, quantum algorithms, and hardware integration for quantum applications

🌐

Semantic Web

SPARQL 1.2, GraphQL, RDF processing with AI-augmented reasoning capabilities

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Legal Tech

Statute parsing, multi-jurisdiction analysis, and formal verification for legal documents

πŸ”

SMT & Verification

Satisfiability Modulo Theories solving, interactive theorem proving, proof generation, and formal logic verification

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Geospatial

Pure Rust geospatial data abstraction, raster/vector format processing, and coordinate transformations without C dependencies

πŸŽ™οΈ

Audio & Visual

Neural speech synthesis, adaptive signal processing, and real-time audio/visual stream analysis with cross-platform support

Explore All Projects

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