Open-source alternatives to Jrnl

crypto-js is a JavaScript cryptography library providing a collection of standard cryptographic algorithms and data transformation tools. It functions as a symmetric encryption toolset, a cryptographic hash implementation, and a password derivation tool for the JavaScript environment. The library enables the protection of sensitive data through symmetric encryption and the production of fixed-size data digests to verify integrity. It includes utilities for converting user passwords into secure cryptographic keys and a data format converter for translating information between Base64, Hex, and

sjcl is a JavaScript cryptography library providing a collection of primitives for encryption, hashing, and encoding within a web browser. It functions as an AES symmetric encryption tool, a cryptographic hashing library, and a Base32 data encoder. The project provides implementations for the Advanced Encryption Standard to secure data through symmetric key encryption and decryption. It also enables the generation of fixed-length data fingerprints to verify information integrity and authenticity. The library covers a broader range of security capabilities, including client-side data hashing,

RavenDB is a multi-model NoSQL document database designed for high-performance, ACID-compliant data storage. It persists structured information as schema-flexible JSON documents and utilizes a unit-of-work session pattern to track entity changes and batch modifications into atomic transactions. The platform is built on a distributed architecture that supports horizontal scaling through sharding and ensures high availability via multi-node, master-to-master cluster replication. The database distinguishes itself through a self-optimizing query engine that automatically creates and maintains ind

VNote is a native C++ desktop application designed as a Markdown note-taking platform and digital knowledge base. It provides a high-performance environment for organizing, editing, and structuring information using a Markdown-based content model. The application distinguishes itself with a Vi-style input mode for text navigation and a system of priority-based event hooks for extensibility. It further supports customization through CSS-based theme styling and global hotkey mapping. Broad capabilities include personal knowledge management via full-text and tag search, digital mind mapping, an

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

This project is a self-hosted personal information manager and private dashboard. It serves as a centralized web application for aggregating personal data, including finances, schedules, contacts, and goals, within a private database. The system functions as an encrypted password manager for secure credential storage, a personal finance tracker for monitoring spending and product prices, and a personal knowledge base for categorized research, notes, and travel plans. It also maintains a historical record of personal achievements and life accomplishments. The application provides tools for pe

Flow-dashboard is a centralized personal productivity and knowledge management platform designed to track habits, manage tasks, and aggregate data from disparate sources. It functions as a personal analytics engine that stores records in a relational database, allowing users to visualize behavioral patterns and progress toward long-term goals through detailed charts and reports. The system distinguishes itself through a conversational interface that enables users to interact with their data using natural language commands. By integrating with external services, it synchronizes activity logs,

Notes is a terminal-based utility for managing personal knowledge bases through plain-text files. It functions as a command-line manager that organizes information directly on the local filesystem, ensuring data portability and preventing reliance on proprietary formats. The tool integrates with standard shell workflows by leveraging Unix-style design principles, such as accepting piped data streams and delegating text editing to the user's preferred system editor. By storing content as standard files within a directory structure, it allows users to perform file management, search, and organi

This project provides a set of development guidelines and architectural recommendations for building iOS applications. It focuses on structuring Swift applications to decouple business logic from the user interface to improve testability and maintenance. The project covers specific implementation standards for security, such as using keychain storage for sensitive data and TLS certificate pinning for network traffic. It also defines patterns for code quality enforcement through static analysis and compiler configurations, as well as strategies for asset and localization management. The guide

RedisInsight is a graphical user interface and management tool for browsing, analyzing, and administering Redis databases. It provides a visual environment for exploring key-value data structures, managing database instances, and performing data analysis across different operating systems and deployments. The tool distinguishes itself by providing dedicated visual managers for complex operations, including a vector database manager for configuring embeddings and similarity searches, a query workbench for executing raw commands and Lua scripts, and a performance monitoring dashboard for tracki

OffensiveNim is a red teaming framework and post-exploitation toolkit developed in Nim. It provides a collection of low-level primitives and a Windows API wrapper designed for offensive security operations, including malware development and shellcode loading. The project focuses on evasion and obfuscation through techniques such as API unhooking, direct system calls, and anti-debugging mechanisms. It features diverse payload delivery methods, including reflective binary loading, the execution of .NET assemblies via CLR hosting, and various shellcode injection techniques using fibers, COM obje

LiteDB is a serverless NoSQL document store and embedded database engine for .NET applications. It persists unstructured documents and binary data into a single standalone disk file, allowing the database to run within the application process rather than as a separate server. The system supports strongly typed queries through Language Integrated Query and allows the execution of standard SQL commands for data retrieval and transformation. It provides native mapping of plain classes into document formats and secures stored information via symmetric-key file encryption. The engine includes cap

Papra is a self-hosted document management system designed for digital archiving, organization, and retrieval. It serves as a centralized platform for storing files with a focus on security, providing an encrypted file archive using AES-256-GCM and a programmatic interface for managing documents and metadata via a REST API, SDK, and command line tools. The system distinguishes itself through an automated document ingestion engine that imports files via email forwarding, monitored folders, and webhook listeners. It further enhances discoverability by acting as an OCR document indexer, extracti

imessage-exporter is a tool for extracting message history and media from iMessage databases into portable text and web formats. It functions as a database exporter, a diagnostics tool, and a parser that converts raw SQLite records into standardized formats for cross-platform processing. The project provides utilities for the archival of conversations and the recovery of database files. It includes diagnostic capabilities to analyze message records for internal inconsistencies and structural problems. The system employs a local-only processing model to extract data via SQL queries and maps r

This project is a reactive, offline-first NoSQL database engine designed for JavaScript applications. It provides a robust framework for managing application state by synchronizing data across browsers, mobile devices, and server-side runtimes. By treating local storage as the primary source of truth, it enables applications to remain functional without network connectivity, automatically reconciling changes with remote backends once a connection is restored. The database distinguishes itself through a modular architecture that supports cross-environment synchronization and high-performance d

Gauzy is an open business management platform and multi-tenant enterprise resource planning system. It provides a modular business framework designed to manage core organizational operations through a unified web interface or as a headless business API. The platform is distinguished by its integration with the Model Context Protocol, allowing it to act as a server that exposes business data and system functions as tools for AI assistants. It utilizes a dynamic plugin architecture and a dedicated marketplace to extend core business entities and services. The system covers a broad range of ope

Mongoid is an object-document mapper for Ruby that translates Ruby objects into MongoDB documents. It serves as a document database mapper and client library, providing a structured way to manage data persistence and retrieval within a NoSQL environment. The project distinguishes itself by offering advanced data retrieval tools, including vector search for semantic similarity and full-text search for keyword matching. It implements high-security data protection through client-side field-level encryption, encryption key rotation, and TLS connection security to protect sensitive information. B

This repository is a collection of technical knowledge and solutions focused on mobile application development, particularly for Android and iOS platforms. It covers a wide range of practical engineering challenges, including hotfix and patching techniques, database management and repair, network communication, logging, and video processing. The content is presented as shared knowledge, documenting real-world problems and their implementations. The project provides detailed guidance on applying hotfixes to running Android applications through multiple methods, such as class replacement, full

Stalwart is a self-hosted email and collaboration infrastructure that provides an integrated mail server supporting SMTP, IMAP, POP3, and JMAP protocols. It functions as a comprehensive communication hub, combining email hosting with a collaboration server for shared calendars, contacts, and files. The system distinguishes itself through a distributed architecture that uses peer-to-peer cluster coordination to ensure high availability and fault tolerance. It features a built-in security suite that implements an S/MIME and OpenPGP email gateway alongside automated TLS certificate provisioning

H2 is a JDBC-compliant relational database management system written in Java. It functions as an embeddable SQL database that can run directly within an application process to remove network latency, or as an in-memory database for high-performance volatile storage. It also includes a web-based console for executing SQL commands and administering schemas. The system is characterized by its flexible deployment modes, including a standalone server mode for remote TCP/IP access and a mixed mode for simultaneous local and remote connectivity. It features a dialect emulation layer and compatibilit

This project is an embedded operating system for creating decentralized peer-to-peer communication networks using long-range radio hardware. It provides an off-grid messaging protocol for transmitting text and GPS coordinates without relying on cellular or internet infrastructure. The firmware implements a secure communication framework using shared keys and high-grade encryption to protect data transmitted over the air. It includes a LoRaWAN hardware interface to manage radio parameters and an MQTT radio gateway to bridge local mesh traffic to external networks. The system covers a broad ra

rtv is a terminal user interface social media browser and Reddit terminal client. It functions as a command-line interface for browsing, searching, and interacting with Reddit content, allowing users to manage accounts and view social feeds without a web browser. The application integrates with external system tools for content composition, launching configured text editors to create and modify long-form posts and comments. It handles media and external links by delegating them to system-level shell commands and handlers based on MIME types. Capabilities include account and inbox management

AmazeFileManager is a mobile application for managing local and remote files on the Android operating system. It functions as an Android file manager, an application manager for backing up and uninstalling software packages, and a root file explorer for accessing protected system directories. The project includes a cloud storage client that utilizes plugins to synchronize data across remote providers and a file encryption tool for securing sensitive mobile data through encryption standards. The application provides capabilities for local file operations, specialized format visualization for

resume-cli is a command line interface for managing professional resumes based on the JSON Resume standard. It provides a suite of tools for validating resume data against a standardized schema and transforming that structured data into visual documents. The project includes a theme engine that converts data into stylized HTML and PDF documents. It features a data converter to import various professional file formats into a single standardized structure and a local server for previewing changes to a resume in real time. The toolset covers the full workflow of professional data management, fr

Awless is a command-line interface and infrastructure orchestrator for managing, deploying, and inspecting AWS cloud resources. It functions as a resource inspector, identity manager, and secure connection utility, providing a hierarchical set of commands to control cloud environments. The tool distinguishes itself by syncing remote cloud state to local graphs, enabling offline infrastructure analysis, auditing, and resource relationship querying without active API calls. It further streamlines operations by mapping human-readable aliases to system identifiers and facilitating secure shell co

Taskbook is a command-line task manager and local plain-text organizer that provides a terminal user interface for managing to-do lists, project boards, and notes. It functions as a CLI Kanban board, allowing users to group actionable items and informational snippets into categorized boards. The tool emphasizes local data organization by storing information in local files with customizable storage paths. It supports a Kanban-style workflow where tasks are organized into boards and tracked through pending, in-progress, and complete states. The system includes capabilities for prioritizing tas

Kùzu is an embedded property graph database engine designed for high-performance analytical queries and local data management. It operates as a library within the host application process, utilizing a columnar-based storage architecture and just-in-time query compilation to execute complex graph traversals and pattern matching efficiently. By mapping database files directly into system memory, it ensures data durability and high-speed access while maintaining ACID-compliant transactional integrity. The engine distinguishes itself by integrating vector similarity search and full-text search di