Open-source alternatives to 7zip

PeaZip is a cross-platform archive manager and file compression utility. It functions as a tool for compressing, extracting, and managing files across various formats, including 7Z, ZIP, RAR, and TAR. The project includes a specialized archive format converter for adjusting compatibility and compression levels, and a file integrity verifier for calculating checksums and hashes. It provides security tools for protecting data via authenticated encryption and passwords, as well as secure file deletion to permanently erase data from disk space. The application covers a broad range of capabilitie

Zstandard is a lossless data compression library and archive format designed for high compression ratios and fast real-time processing. It functions as a real-time data compressor and multi-threaded compression engine capable of distributing workloads across multiple CPU cores to increase throughput. The system features a dictionary-based compressor that trains on sample data to improve the compression ratio and speed of small files. It also provides long distance pattern matching to identify repeated sequences across large files. The library covers a broad range of capabilities including st

Keka is a file compression and archive extraction utility designed for macOS and iOS. It functions as a tool to shrink the size of files and folders to optimize storage and speed up data transfers. The application serves as an encrypted archive manager, allowing users to protect compressed files with passwords and encryption to ensure private data sharing and secure transmission. The software covers broad capabilities in file archiving, including the ability to compress data into archival formats and unpack various archive formats to restore original content to the local system.

This project is a collection of reference implementations for algorithms, mathematics, cryptography, compression, and machine learning written in C#. It serves as an educational library providing standard implementations of sorting, searching, and graph theory algorithms. The repository covers a wide range of computational domains, including combinatorial optimization for constraint satisfaction and scheduling, as well as symmetric and classical cryptographic ciphers. It also provides reference code for lossless data compression techniques and fundamental machine learning primitives such as r

Draco is a library and toolset for compressing, transcoding, and decoding 3D geometric meshes and point cloud data. Its primary purpose is to reduce storage size and transmission bandwidth for 3D assets. The project includes a geometry optimizer specifically for glTF file containers to reduce asset footprints. It also features a hardened decoder designed to process malformed or untrusted 3D geometric data safely to prevent memory corruption and crashes. The software covers a broad range of 3D data processing capabilities, including geometric data reconstruction, point attribute management, a

Archiver is a multi-format archive library and command-line tool for creating, extracting, and managing compressed archives. It provides a unified interface for working with formats including gzip, bzip2, zip, tar, rar, 7zip, and zstandard, and can automatically detect archive formats by inspecting binary byte headers rather than relying solely on file extensions. The library uses interface-based abstractions and a multi-format codec registry to support format-agnostic operations, while its stream-based compression pipeline processes archive data continuously without loading entire archives i

This project is a comprehensive collection of common computer science algorithms and data structures implemented in Swift. It serves as an educational reference and library for studying computational complexity, algorithmic logic, and data structure engineering through practical code examples. The repository provides a wide suite of data structure implementations, including various types of linked lists, heaps, hash tables, and an extensive range of hierarchical trees such as Red-Black, B-Tree, and Splay trees. It also covers diverse sorting and searching techniques, from basic bubble sort to

This project is a comprehensive collection of computer science implementations and an algorithm tutorial repository. It serves as a study guide and reference for competitive programming, providing executable code examples that demonstrate fundamental algorithmic problem solving and mathematical computation. The library covers a wide range of specialized domains, including cryptography and security primitives, lossless data compression techniques, and computational geometry for spatial analysis. It also features implementations of machine learning models, linear algebra operations, and formal

Setuptools is a Python package build tool and distribution framework used to bundle code into distributable archives. It functions as a project metadata manager, allowing for the declarative definition of project identity, versioning, and dependencies. The toolkit distinguishes itself by providing an extension compiler for C and C++ source files and a plugin architecture that uses entry points to enable runtime discovery of functionality. It also supports development environment tooling, such as editable installs that link source code directly to the environment to allow immediate changes wit

This project is a collection of optimized computational routines and standardized implementations of fundamental computer science algorithms. It serves as an educational library for studying and applying core algorithmic patterns, including dynamic programming, greedy strategies, and recursive decomposition, within a TypeScript environment. The library distinguishes itself by providing generalized solvers for complex optimization and analysis tasks. It includes specific implementations for resource allocation, such as rod cutting, interval scheduling, and change-making problems, alongside seq

OceanBase is a distributed SQL database designed for high availability and strong consistency across multiple nodes and regions. It functions as a hybrid transactional and analytical processing engine, allowing real-time analytics and transactions to execute on a single data copy. The system also serves as a vector database engine for indexing and querying vector data to power semantic search and recommendation systems. The platform features native compatibility layers for MySQL and Oracle, enabling the migration of legacy workloads without rewriting SQL code. It utilizes a Paxos-based distri

This project provides a server-side language runtime and a standardized Docker image for deploying applications across different operating systems. It functions as an execution environment for generating dynamic HTML, JSON, and XML content, while also serving as a command line interface for automation scripts and background jobs. The runtime is designed for extensibility through a C-based extension architecture, allowing the loading of custom modules for specialized functionality. It supports multiple server application interfaces, including a FastCGI web interface for high-performance commun

This repository is a comprehensive collection of reference implementations and sample libraries for the Universal Windows Platform. It provides practical examples of how to use Windows Runtime APIs to build cross-device applications, including detailed guidance on XAML-based declarative user interfaces and DirectX-integrated rendering. The project distinguishes itself by providing a wide array of hardware integration suites, covering low-level communication with USB, Serial, I2C, SPI, and GPIO peripherals. It includes specialized implementations for mixed reality holographic rendering, advanc

This project is a comprehensive educational resource and curriculum focused on site reliability engineering, distributed systems, and infrastructure operations. It provides technical guides, a systems engineering course, and instructional manuals designed to teach the principles of managing large-scale computing environments. The curriculum covers high-level architectural design for scalability and resilience, including fault-tolerant infrastructure, high-availability patterns, and microservices decomposition. It emphasizes the practical application of site reliability engineering through the

gif.js is a JavaScript GIF encoder and client-side color quantizer that generates animated GIF files directly within the web browser. It functions as an HTML5 canvas exporter and image processor, allowing for the creation of animated images from web sources without the need for a backend server. The library utilizes web workers to offload heavy image encoding tasks to background threads, which prevents the browser user interface from freezing during the generation process. This architecture enables the tool to act as a web worker image processor for dynamic image generation. The system cover

Ouch is a command-line archive utility designed for compressing and decompressing files across multiple formats, including zip, tar, 7z, and zstd. It functions as a secure archive processor that sanitizes metadata to prevent path traversal attacks and terminal injection during extraction. The tool features a chain compression pipeline that allows for the sequential application of multiple compression algorithms by parsing chains of file extensions in a filename. It also includes a dedicated accessibility mode that optimizes terminal output for screen readers and text-to-speech technologies by

Inno Setup is an open-source script-driven installer generator for Windows. It transforms a plain-text script—written in a Pascal-derived scripting language—into a standalone executable that handles file installation, registry configuration, shortcut creation, and uninstall logic. The resulting installer is a self-extracting executable that compresses all payload files using LZMA compression, producing a compact and self-contained setup package. The tool distinguishes itself with a fully programmable Pascal-based scripting language, allowing developers to write custom logic, design custom wiz

zlib is a lossless data compression library that implements the deflate compression algorithm, combining LZ77 sliding window and Huffman coding. It provides the core compression and decompression engines, along with support for gzip, zlib, and raw deflate stream formats, enabling data to be compressed and restored without any loss of information. The library offers a range of capabilities for handling compressed data, including single-call memory and file operations, as well as incremental stream-based processing for working with data larger than available memory. It includes mechanisms for a

TDengine is a distributed time-series database designed for the high-speed ingestion, compression, and retrieval of timestamped metrics and sensor data. It functions as a SQL-compatible analytics engine, allowing users to perform complex operations on massive volumes of time-ordered information using standard relational syntax. The platform is built to serve as a backend foundation for industrial IoT environments, managing real-time data streams and device metadata through a cluster-based architecture. The system distinguishes itself through a distributed sharding architecture that uses consi

SharpZipLib is a .NET compression library and file archiver used to create, extract, and manage Zip, GZip, Tar, and BZip2 archives. It provides a framework for compressing and decompressing data streams and files within the .NET ecosystem. The library distinguishes itself through support for archives that exceed the standard four gigabyte size limit. It also includes capabilities for decrypting password-protected files using industry-standard encryption and managing Tar archives with long filename support. The project covers a broad range of archive management operations, including integrity

Snappy is a high-performance lossless compression library implemented in C++. It provides data reduction methods that perfectly restore original information, focusing on system-level efficiency and processing velocity across different platforms. The library prioritizes high-speed data compression and decompression over achieving the maximum possible compression ratio. It is designed for real-time stream compression to reduce bandwidth usage without introducing significant processing latency. The implementation covers high-velocity data shrinking and rapid restoration. It includes resilient d

lz-string is a JavaScript library and command-line tool for compressing and decompressing string data using Lempel-Ziv algorithms. It provides utilities to reduce the size of strings and files to optimize storage and network bandwidth. The project includes specialized encoders to ensure compressed data is compatible with different transport layers. These include options for Base64 encoding, UTF-16 string mapping for increased storage density, and URI-safe translation for use in web addresses. The library supports client-side data compression for local storage optimization and provides a comm

Masuit.Tools is a comprehensive static utility library for .NET and ASP.NET Core development. It provides a broad collection of reusable helper methods and infrastructure components that cover common programming tasks without requiring dependency injection or instance management. The library is organized as flat utility classes, making its functionality directly accessible from anywhere in a project. The toolkit distinguishes itself through a wide range of integrated capabilities that go beyond typical utility libraries. It includes a multithreaded range-request file downloader with pause and

Starscream is a Swift WebSocket client library that provides a concrete implementation of the WebSocket protocol for iOS and macOS applications. It functions as an event-driven wrapper for establishing and managing bidirectional connections to send and receive text and binary frames over TCP. The library includes a secure WebSocket client capable of encrypting traffic and validating server identities. It manages the full connection lifecycle, from the initial handshake and header exchange to session termination with custom close codes. The project covers a broad range of networking capabilit

RocksDB is a high-performance, embeddable persistent key-value library and storage engine based on Log-Structured Merge-trees. It is designed to provide durable storage for large-scale datasets, integrating directly into applications to manage data on flash and RAM-based hardware. The engine is distinguished by its focus on minimizing read and write amplification through multi-threaded compaction and custom memory allocators. It features specialized optimizations for flash storage, including support for zoned block devices, and provides the ability to extend store behavior via external plugin

GreptimeDB is a distributed, open-source time-series database built for unified observability. It stores and queries metrics, logs, and traces together in a single columnar engine, supporting both SQL and PromQL for analysis. The database is designed as a Kubernetes-native operator with a decoupled compute and storage architecture, enabling horizontal scaling and multi-region deployment. What distinguishes GreptimeDB is its role as a multi-protocol ingestion gateway, accepting data through OpenTelemetry, Prometheus Remote Write, InfluxDB, Loki, Elasticsearch, Kafka, and MQTT protocols without

Iggy is a distributed message streaming platform and multi-protocol message broker that functions as a persistent distributed log store. It provides infrastructure for publishing and consuming binary messages using an append-only log, ensuring high availability and data consistency across nodes through Viewstamped Replication. The platform is distinguished by its specialized LLM streaming infrastructure, which uses a server protocol to connect large language models to streaming data and system controls. This includes standardized protocols for context management and data bridging via HTTP or