HatchZip

A Rust library for creating and reading specially crafted .tar.gz archives with embedded chapter-boundary information. A chapter contains zero or more consecutive tar entries; chapter markers are encoded as valid empty gzip blocks with distinctive Huffman code alphabets, allowing readers to skip groups of entries in constant time without decompressing intervening data and to decompress separate chapters concurrently. Archives remain readable by existing tools as ordinary tar.gz files, and archives without chapter metadata are treated as one chapter.

Hatchdoor is a self-hosted web application and MCP server for Obsidian-style Markdown vaults. It provides a browser interface and an MCP endpoint through which users and AI agents can browse, keyword-search, semantic-search, create, edit, move, and link notes, with wiki links, backlinks, graph views, metadata, Markdown rendering, attachments, and optional Git commits and pushes. Markdown files remain the source of truth; Hatchdoor builds a disposable SQLite read model for browsing, links, search, graph data, and metadata, rebuilding it from the vault if the cache is deleted. It is distributed as a rootless, distroless Docker or Podman container, with MCP and write access disabled by default. Hatchdoor is not a hosted synchronization service or multi-user collaboration platform. The project is licensed under the GNU Affero General Public License v3.0 only.

JSZip is a JavaScript library for creating, reading, and editing ZIP archives. Its API lets applications add generated content to files and folders, then asynchronously produce a ZIP archive such as a browser Blob for download; it also supports base64 data and use with Node.js. The project is distributed under either the MIT or GPLv3 license and can be installed with npm or included manually in a web page.

WinRAR is a Windows data-compression, encryption, and archiving tool developed by win.rar GmbH. It creates and extracts archives, including RAR and ZIP files, and supports other file formats. The software is available in multiple languages and supports Windows 10 and Windows 11.

Glyd is a Rust lossless-compression library and command-line tool with a C ABI, streaming interfaces, and Python and Go bindings. It targets object storage, data lakes, logs, telemetry, backups, versioned exports, RPC payloads, and caches as an alternative to LZ4, Snappy, and zstd. Its record mode detects delimited records, SQL dumps, JSON lines, and varying-shape logs, converts fields or template variables into typed streams, and compresses them in parallel. Base mode compresses a new version against an older version by using regions of the old data as history. The format uses independently decodable blocks and parallel paths; higher levels use separated token, offset, length, and literal streams with SIMD-oriented decoding, while long-distance matching can find repeated content up to 128 MB back. The repository also provides shape dictionaries for small objects, packs for many small objects, container and JPEG handling at selected levels, and a cold context-mixing level for infrequently read data. The separate glyd-store crate and CLI select similar stored objects as delta bases using fingerprints, cap delta chains, and support local directories and S3-compatible backends. The codec, CLI, C ABI, and bindings use the BSD 3-Clause License or GPL-2.0; glyd-store uses the Business Source License 1.1, with commercial production use requiring a license and conversion to Apache-2.0 four years after each release.