30 open-source projects similar to sindresorhus/caprine, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.
AyuGramDesktop is a modified Telegram desktop client and MTProto messaging client. It functions as a local message logger and a privacy-focused chat tool, providing a fork of the standard C++ Qt client. The project focuses on unlocking premium features and capabilities locally without a paid subscription. It distinguishes itself through a ghost mode that masks online presence and suppresses read receipts, as well as a system for preserving message history by logging deleted and edited content into a local database. The client includes tools for content management, such as bypassing restricti
KeepChatGPT is a browser extension designed to enhance the ChatGPT web experience by acting as a session manager, UI optimizer, and privacy guard. It focuses on maintaining active connections to prevent session timeouts and improving the overall interface for better readability and organization. The project distinguishes itself through privacy and security features that block tracking telemetry and use regular expressions to mask sensitive data before it is sent. It also includes tools to mitigate conversation auditing and bypass bot verification challenges to reduce the risk of account restr
Whatsie is a web application desktop wrapper designed to turn web interfaces, specifically messaging services, into standalone desktop applications. It provides a dedicated window environment with a custom icon and system tray integration. The project includes security and privacy layers such as password-protected session locking with automatic timeouts and the ability to purge persistent application data and web caches. It also features native hardware permission management for controlling camera and microphone access. The application supports native system notifications, file download hand
This project is an Electron-based multi-service browser and web wrapper that hosts multiple web services in isolated sessions within a single desktop window. It functions as a unified messaging desktop client and a multi-account manager, allowing users to run several concurrent instances of the same web service with different login credentials. The application serves as a customizable web view container that supports the injection of user-defined JavaScript and CSS to modify the behavior and appearance of integrated services. It includes a cloud-synced workspace manager that synchronizes conf
Mattermost is a self-hosted, enterprise-grade communication platform designed for organizations that require strict control over their internal data and messaging infrastructure. It functions as a centralized hub for real-time team interaction, offering persistent messaging, voice and video conferencing, and integrated project management tools within a single, private workspace. The platform is built to support high-security environments, including air-gapped deployments where public internet access is restricted or unavailable. The platform distinguishes itself through a focus on regulatory
MCP server that integrates the LINE Messaging API to connect an AI Agent to the LINE Official Account.
Signal-Desktop is a cross-platform messaging application that provides end-to-end encrypted communication. It implements the Signal Protocol to secure messages and voice calls, ensuring that only intended recipients can access content. The application manages asynchronous key exchange and session initialization to maintain secure communication channels between parties who are not online simultaneously. The project distinguishes itself through advanced cryptographic protections, including hybrid post-quantum security that combines classical elliptic curve cryptography with lattice-based algori
An ntfy MCP server for sending/fetching ntfy notifications to self-hosted or ANY ntfy.sh server from AI Agents 📤 (supports secure token auth & more - use with npx or docker!)
Textual is an IRC client for OS X
TelegramSwift is a native macOS client for the Telegram messaging platform, built entirely in Swift. It provides a complete implementation of the Telegram protocol, enabling users to send text messages, make voice calls, share media files, and participate in group chats and channels directly from their Mac. The application supports core messaging features including end-to-end encryption, emoji reactions, message pinning, and threaded comments, along with content types like stickers, GIFs, polls, and stories. The client extends beyond basic messaging with capabilities for bot interaction, paym
Gemini Voyager is a browser-based toolkit designed to enhance the interface and workflow of large language model web applications. It serves as a conversation manager, an output renderer, and a prompt library manager, allowing users to customize the layout and functionality of AI chat interfaces. The project distinguishes itself through advanced content handling, such as removing image watermarks by reversing alpha blending to restore original pixels. It also provides specialized rendering for LaTeX mathematical formulas and Mermaid diagrams, alongside tools to fix broken Markdown formatting
This project is a decentralized, privacy-focused messaging platform designed to eliminate reliance on central servers and persistent user identifiers. By utilizing a metadata-minimizing protocol, it ensures that all communication remains end-to-end encrypted and that user identities are stored exclusively on the local device. The architecture relies on relay-based message routing and identity-free network addressing to maintain data sovereignty and prevent the correlation of user activity. What distinguishes this platform is its commitment to traffic isolation and anonymity. Each conversation
Florisboard is an open-source virtual keyboard and input method editor for Android devices. It functions as an extensible framework for mobile text input, providing a privacy-focused alternative for typing and emoji insertion. The project is distinguished by a comprehensive theme engine that allows users to modify fonts, colors, and background images via stylesheets. It supports the creation, packaging, and distribution of custom visual themes and behavioral extensions. The keyboard includes integrated productivity tools such as clipboard history management and tactile haptic feedback to sim
Privacy Badger is a browser privacy extension designed to block third-party trackers and strip monitoring parameters from URLs to protect user anonymity. It functions as a heuristic tracker blocker, identifying tracking domains by analyzing their appearance across multiple websites. The extension includes a link tracking sanitizer that uses regular expression matching to remove identifiers from outgoing links before navigation occurs. It also acts as a third-party content controller, replacing embedded trackers and social widgets with placeholders that only activate upon manual user interacti
FairEmail is an open-source email client for Android that supports standard IMAP and SMTP protocols. It serves as a privacy-focused communication tool that manages multiple accounts through a unified inbox and provides PGP encryption and decryption for secure messaging. The application prioritizes data privacy by blocking tracking pixels and requiring manual confirmation before loading external images. It secures sensitive information through biometric authentication and personal identification numbers to restrict unauthorized access to the device. The client includes a suite of organization
Halloy is an IRCv3 chat client designed for real-time communication across multiple servers and networks. It implements modern protocol standards, including support for message tags, read markers, rich user metadata, and WebSocket connections. The project distinguishes itself through integrated anonymity and deep interface customization. It features native Tor and proxy routing to hide the user's connection origin and provides a themed environment with configurable window pane layouts, keyboard aliases, and custom color schemes. The client covers a broad range of capabilities, including chan
pydoll is a Chrome DevTools Protocol automation library and headless browser controller used for web data extraction and parallel browser automation. It controls Chromium-based browsers via direct WebSocket connections, allowing it to manage isolated browser contexts and tabs while bypassing the overhead and detection associated with WebDriver. The project features an anti-bot evasion framework that mimics natural human behavior, including mouse movements generated via Bezier curves and variable typing patterns. It provides specialized stealth capabilities to bypass behavioral analysis and au
bootstrap-wysihtml5 is a rich text editor that integrates with the Bootstrap CSS framework to provide a visual interface for formatting HTML content. It functions as a localizable web editor and an HTML content parser that filters and validates tags and attributes to ensure clean content output. The project features a customizable rich text interface that allows for the modification of the toolbar and overall visual presentation through external stylesheets and HTML templates. It includes support for custom locale definitions and translated interface labels to accommodate international users.
This project is a self-hosted AI frontend and web-based chat interface designed to interact with large language model APIs. It functions as an API-based chat client and dashboard that enables users to send prompts and receive responses from generative AI models. The application serves as a self-hosted AI gateway, providing API key proxying to connect official model keys to a web interface. It includes security and traffic controls, such as interface access restrictions via a shared secret key and request volume limiting to prevent service abuse. The system covers conversation data management
Readest is a cross-platform digital book reader and library management system designed to render multi-format ebook files across different devices. It provides a consistent interface for viewing digital content while coordinating reading progress, bookmarks, and notes through synchronization services. The application includes specialized tools for technical and academic reading, such as code syntax highlighting, a virtual split-screen viewport for comparing documents, and full-text search for rapid information retrieval. It further extends the reading experience with integrated dictionary loo
Searx is a privacy-respecting metasearch engine and search result aggregator. It functions as a self-hosted search proxy that queries diverse web services, databases, and local indices to present a single unified list of results. The project prevents user tracking and profiling by acting as an intermediary between the client and search services. It strips identifying information from queries, removes tracker URLs and HTTP referrers from outgoing links, and can route traffic through proxies or the Tor network to mask user identity. The system supports multilingual search and result filtering
PrivateBin is a self-hosted, zero-knowledge text hosting service and secret sharing tool. It utilizes browser-based AES 256-bit encryption to ensure that data is encrypted on the client side before transmission, meaning the hosting server cannot read or recover the original content. The project distinguishes itself by using URL fragments to distribute decryption keys, preventing the secret key from ever being sent to the server. It supports the distribution of both encrypted text and files, which are compressed and encrypted locally prior to storage. The platform includes capabilities for an
douyuEx is a Tampermonkey userscript and web interface enhancer designed to modify the functionality and appearance of a specific live streaming platform. It acts as a comprehensive automation tool and browser extension that provides a suite of utilities for managing live stream interactions, enhancing video playback, and analyzing streaming data. The project distinguishes itself through deep automation of platform-specific tasks, such as automated account check-ins, treasure box and gift packet claiming, and keyword-based chat responses. It also provides advanced interaction tools, including
Pixez-flutter is a cross-platform mobile application designed for browsing, searching, and downloading digital artwork from external platforms. It provides a comprehensive interface for managing remote media collections, including support for viewing illustrations, manga, and animated content. The application handles user authentication and session persistence to ensure a consistent experience across different devices. The project distinguishes itself through a sophisticated network management layer that enables users to bypass regional restrictions and network limitations. By utilizing custo
CefSharp is a .NET binding for the Chromium Embedded Framework that allows developers to embed a full web browser into desktop applications. It provides an embedded browser control for rendering HTML, CSS, and JavaScript content within a native host window. The project features a bidirectional JavaScript bridge interface that enables the execution of scripts and the exposure of native host classes and methods to the browser environment. It also includes a headless browser automation tool for executing web tasks and capturing page screenshots without a graphical user interface. The library co
A server that integrates Linear's project management system with the Model Context Protocol (MCP) to allow LLMs to interact with Linear.