Fast and efficient content-defined chunking for data deduplication. Java implementation of FastCDC as library.

A virtual filesystem for Crystal: unify directories and archives into a single tree with compression, encryption, and chunked storage.

Fast content-defined chunking in Go.

SQLite-backed local storage for records, objects, vectors, and graphs.

This package implements the "FastCDC" content defined chunking algorithm in Java. This package started as Java port of the implementation by Nathan Fiedler, and the code refer to `iscc/fastcdc-py`

Streaming Content-Defined Chunking (CDC) using FastCDC algorithm with modernized API, support sync and async I/O. Prioritizes correctness, determinism, and composability. Flexible async backend support such as Tokio, async-std, and smol ect.

Content-addressed delivery for game updates, assets, and engine packs — smaller downloads, persistent cache reuse, and byte-identical reconstruction.

A memory-safe, Rust-based version control system that uses a private blockchain to ensure absolute data sovereignty and an immutable audit trail. Optimized for large binary assets with FastCDC, it offers granular file-level permissions for mission-critical corporate environments.

Smart Storage for Your Builds

Fast, encrypted, deduplicating backup tool written in Rust.

Find (partial content) duplicate files.

Print FastCDC rolling hash chunks and checksums.

A high-performance FastCDC 2020 implementation written in Python + Cython

A FastCDC implementation in Kotlin with an unusual API.

A library for storing and managing snapshots of textual data in an SQLite database

A FUSE-based filesystem implementing content-defined chunking and deduplication in Rust.

Parallel implementation of DumbVersion's patch format, now with ZSTD

Professional-grade 3D asset manager built in Rust. Bypasses physical I/O limits via FastCDC deduplication. Reclaim 60% storage.

Sparse-delta, verified transfer and migration of LLM model weights between machines

High-performance FastCDC (2016) research cluster for content defined chunking.