par2

High performance PAR2 create client for NodeJS

Command-line File Verify

par2cmdline × ParPar: speed focused par2cmdline fork

The fast Usenet downloader. One self-contained executable: line-rate downloads, one-pass verify and extract, poster wall, built-in indexer. Speaks the SABnzbd and NZBGet APIs, so Sonarr, Radarr, nzb360 and LunaSea connect unmodified

GUI front-end to ParPar, a PAR2 creation tool

Personal digital preservation for Linux — verifiable, repairable backups designed for recovery years from now.

Recursively create .par2 parity for an entire filesystem and automatically keep them up to date even when files are modified!

Robust unidirectional file transfer system over UDP implementing Forward Error Correction (FEC) via Reed-Solomon codes. Features a custom application-layer protocol, multi-threaded architecture and automatic data reconstruction

nzb downloading, par2 verification, and unrar in rust with native macOS/iOS GUI and cli on others.

A set of tools for automatically managing bitrot and format in large quantities of media

Simple (yet complete) PAR1 and PAR2 recovery sets in pure Go - create, verify and repair 🛟

A cleanroom reimplementation of the par2 error-correction algorithm, library and cli in Zig, based only on publicly-available specs (NOT its source code), and with a more permissive license, a C ABI wrapper, and a LuaJIT FFI example. Full test coverage. NOTE: gpt-5.2-codex and Claude Opus 4.5 AI assisted in parts.

Build and verify PAR1/PAR2 recovery sets in pure Go, with Reed-Solomon error correction to repair corrupted or missing files.

C# .par2 file parsing

Post-processing pipeline: PAR2 verify/repair, archive extraction

Semi-automated Par2 file creation / management tool

Obelisk — an instrument of negentropy. Open-source archival for tape, drives, discs, and cloud: verified end-to-end, restorable forever with three stock tools.

Renames files to its original name based on checksums found in catalog files (SFV or PAR2).

Run par from par2cmdline tools in a Docker image