ZipStream-PHP is a PHP library for dynamically streaming ZIP archives directly to the client or any output stream without writing to disk on the server. It provides a clean API via the `ZipStream` class, which accepts files as strings, paths, streams, PSR-7 streams, or callbacks. The library supports DEFLATE and STORE compression, ZIP64 extensions for large archives, zero-header mode for streaming efficiency, and simulation modes to calculate output size without generating the archive. The architecture is monolithic but well-modularized: the main ZipStream orchestrates file entries, each handled by an internal `File` class, and binary data packing is abstracted through `PackField`. External dependencies are minimal (ext-mbstring, ext-zlib, optional PSR-7 packages), making it lightweight and easy to integrate. The codebase demonstrates strong engineering with comprehensive unit tests, static analysis (Psalm level 1), coding style enforcement, and CI/CD pipelines covering multiple PHP versions and OS platforms. Notable design choices include the use of PHP stream wrappers for custom output (CallbackStreamWrapper) and a simulation mode that enables accurate content-length headers without reading entire streams. Exception classes are well-defined, and the entire public API is fully documented with attributes and inline PHPDoc. The project is actively maintained with frequent commits, up-to-date dependency management, and a clear versioning and support policy.
SingleFileZ is a browser extension (Chrome/Firefox/Edge) and CLI tool that saves complete web pages as self-extracting HTML/ZIP polyglot files. The core output format embeds a ZIP archive containing all page resources (HTML, CSS, images, fonts, frames) inside an HTML wrapper with a JavaScript bootstrap that extracts and displays the page without external dependencies. The extension offers extensive configuration including multiple profiles, URL-based auto-save rules, cloud uploads (Google Drive, Dropbox, GitHub, WebDAV), an annotation editor for notes/highlights/cut operations, batch saving, and file name templating. Architecturally, the project is a multi-browser extension with background scripts orchestrating page capture, content scripts handling in-page UI and resource collection, and a task queue for managing parallel saves. It relies heavily on message passing between contexts and includes custom infrastructure: a binary serialization format (YABSON) for efficient data transfer, a full ZIP read/write library with support for encryption and streaming, and a fork of Mozilla's Readability.js for article extraction. The CLI component uses Docker to run headlessly, delegating to the `single-filez-cli` npm package. The codebase is large and feature-rich but shows signs of maintainability strain: core modules are distributed as minified build artifacts in `lib/`, the README states SingleFileZ has been merged into its parent project SingleFile (suggesting this repo is superseded), and it relies on Manifest v2 which is being phased out by browsers. The custom polyfills and browser-specific workarounds add complexity. Despite this, several components (YABSON serialization, the ZIP library, cloud upload abstractions) are well-isolated and could be reused independently with minimal modification.