Open-source alternatives to Stegcloak

Crypto++ is a comprehensive C++ cryptographic library that implements a broad range of algorithms for symmetric and asymmetric encryption, hashing, and digital signatures. It is designed as a portable toolkit, usable across different operating systems without modification. The library distinguishes itself through its architecture: cryptographic parameters such as key size and mode are configured at compile time via C++ templates, eliminating runtime overhead. Algorithms are registered in a static factory for runtime lookup, while data processing follows a pipeline model of composable sources,

Convert character encodings in pure javascript.

Get the real length of a string - by correctly counting astral symbols and ignoring ansi escape codes

Remove or replace part of a string like Array#splice

Indent each line in a string

i18next is a JavaScript localization library and internationalization framework used to translate application text into multiple languages. It functions as a dynamic translation manager that handles translation resources, language detection, and the mapping of unique keys to localized strings. The system features a pluralization and interpolation engine that applies language-specific grammatical rules for numeric counts and injects dynamic variables into strings. It utilizes a plugin-based backend architecture to load and cache translation namespaces from various sources, including remote ser

Strip leading whitespace from each line in a string

Lightweight simple translation module for node.js / express.js with dynamic json storage. Uses common ('...') syntax in app and templates.

A robust HTML entity encoder/decoder written in JavaScript.

Nanoid is a library for generating unique, fixed-length identifiers designed for distributed systems and database indexing. It produces compact, URL-safe strings by mapping random byte values to a custom character set, allowing for consistent memory allocation and predictable indexing performance across independent nodes without the need for central coordination. The library distinguishes itself by utilizing system-level, cryptographically secure entropy sources to ensure that every generated identifier is statistically unpredictable. This approach provides resistance against collision attack

Replace all homoglyphs with base characters. Useful to detect similar strings.

Convert a dash/dot/underscore/space separated string to camelCase: foo-bar → fooBar

human friendly i18n for javascript (node.js browser)

Detect the indentation of code

This project is a Python cryptography library that provides a collection of cryptographic primitives and high-level recipes for implementing secure encryption and authentication. It functions as a symmetric encryption toolkit and a cryptographic hash provider, offering both a low-level cryptographic interface for building custom protocols and high-level tools for securing data. The library covers a broad range of security capabilities, including symmetric data encryption, the derivation of cryptographic keys from passwords or secret values, and data integrity verification through the generati

Libsodium is a portable, C-based cryptographic library that provides a collection of modern primitives for encryption, decryption, digital signatures, password hashing, and secure key exchange. It is designed to facilitate secure communication and data integrity across diverse hardware architectures and operating systems. The library distinguishes itself by utilizing constant-time primitive execution to prevent side-channel attacks and employing memory-hard algorithms to increase the difficulty of brute-force password attacks. It abstracts complex mathematical operations into simplified inter

This project is a command-line utility designed for secure, content-addressable data archiving. It functions as an encrypted backup tool that stores data as deduplicated chunks, ensuring that every piece of information is identified by a cryptographic hash to maintain integrity across all backups. By applying strong encryption and message authentication codes to both data and metadata, the software prevents unauthorized access and detects potential tampering. The tool distinguishes itself through a backend-agnostic storage abstraction that allows users to maintain repositories across diverse

Hive is a lightweight NoSQL key-value database written in pure Dart for local data persistence. It functions as a type-safe document store that allows for the saving and retrieval of complex data structures and custom objects. The system distinguishes itself through the use of custom adapters for object serialization and symmetric-key encryption to secure data at rest. For web environments, it provides a persistence layer that wraps IndexedDB and utilizes web workers. The project covers broad capability areas including container management, atomic transactional writes, and indexed data retri

This is a symmetric cryptography library written in C that provides a portable implementation of the Advanced Encryption Standard. It functions as a block cipher implementation supporting 128, 192, and 256 bit key sizes for encrypting and decrypting data. The library includes an AES cipher mode provider that supports electronic codebook, cipher block chaining, and counter modes. These operational modes are decoupled from the core block transformation to allow for different encryption patterns. The implementation utilizes static memory allocation and table-based substitution to avoid dynamic

dsvpn is a point-to-point virtual private network tool that establishes encrypted tunnels between two specific endpoints. It functions as a network driver utility that routes raw operating system traffic through a virtual interface for encapsulation and secure transmission. The project distinguishes itself by encapsulating IP packets within TCP streams, allowing secure connections to bypass restrictive network firewalls and filters that block non-standard protocols. It uses symmetric encryption with pre-shared secret keys to authenticate participants and protect data transmission. The softwa

git-crypt is a transparent cryptography layer and secret manager for Git repositories. It encrypts specific files so they remain as ciphertext on remote servers while appearing as plaintext in local directories. The tool uses Git attributes to define the scope of files and directories targeted for encryption. It supports both symmetric secret key encryption for shared access and asymmetric public key encryption to control decryption permissions among multiple collaborators. The system automates the encryption and decryption process through hook-based filters that trigger during commit and ch

Lancet is a comprehensive extension of the Go standard library, providing a collection of reusable functions and data structures designed to reduce boilerplate code in applications. It serves as a general-purpose toolkit across multiple domains, including concurrency, security, networking, and functional logic. The project distinguishes itself through specialized toolkits for Go concurrency, such as keyed locking and channel-based stream processing, and a dedicated functional programming kit that supports currying and function composition. It also includes a dedicated cryptography library imp

This is a blind image watermarking and steganography tool designed to embed and extract hidden data from images without requiring the original source file. It functions as a framework for concealing text or bit arrays within images using mathematical transforms to ensure the marks remain invisible to the viewer. The system is designed for robust watermark extraction, allowing hidden information to be recovered even after images have undergone rotations, cropping, resizing, noise injection, or brightness changes. It utilizes a blind extraction mechanism that retrieves data using a shared passw

tiny-AES-c is a lightweight C language cryptography library that provides a symmetric cipher implementation of the Advanced Encryption Standard. It functions as a portable set of functions for encrypting and decrypting data using a shared secret key. The library is designed for embedded system security, enabling cryptographic operations on hardware with limited memory and processing power. It provides these capabilities without relying on large external dependencies. The implementation utilizes a standard C library approach, employing table-based substitution and in-place buffer mutation to

pysheeet is a technical reference library providing a curated collection of code snippets and implementation patterns for advanced Python development, system integration, and high-performance computing. It serves as a comprehensive guide for implementing low-level network programming, native C extensions, and asynchronous and concurrent programming. The project provides specialized frameworks for the development and deployment of large language models, including tools for distributed GPU inference and high-performance serving. It also includes detailed patterns for high-performance computing

andOTP is an open-source multi-factor authentication client for Android. It functions as a time-based and HMAC-based one-time password authenticator for managing two-factor authentication tokens. The application serves as an encrypted vault for authentication secrets, utilizing hardware keystores, passwords, or PINs to secure the account database. It is specifically designed to support automated backups by exporting account databases via system broadcasts for integration with external automation tools. The software covers the management of authentication tokens through QR code scanning and t

Mbed TLS is an open-source TLS and DTLS library with a small footprint, designed for embedded systems and IoT devices. It provides a portable cryptographic library that includes symmetric ciphers, hashing, and public-key cryptography, along with a reference implementation of the PSA Cryptography API for standardized cryptographic operations across platforms. The library also offers X.509 certificate management for parsing, validating, and managing certificate chains in secure communications. The library is built around a platform abstraction layer that decouples it from OS-specific services t