Top AI Open Source Projects to Watch in 2025

OpenVoice: Instant voice cloning technology co-developed by MIT and MyShell, enabling multilingual voice cloning based on audio foundation models.

GPT-SoVITS: A few-shot voice cloning tool that can train a high-quality TTS model with just 1 minute of voice data.

An open-source text-to-speech system built by reverse-engineering Whisper

A high-performance C/C++ port of the OpenAI Whisper speech recognition model, supporting pure CPU inference and multi-platform deployment.

PowerInfer is a high-speed large language model inference engine designed for local deployment, leveraging sparse activation and a CPU/GPU hybrid architecture to achieve fast LLM inference on consumer-grade hardware.

GPT4All: An open-source AI chatbot application for running local large language models on any device.

A Model Context Protocol server connector for the Perplexity API, enabling web search functionality without leaving the MCP ecosystem.

MCP (Model Context Protocol) server that allows AI assistants (like Claude) to perform web searches via the Exa AI Search API.

A Model Context Protocol (MCP) server for Rember, allowing Claude to create flashcards for you, helping you learn and memorize any important content through spaced repetition.

Graphlit's Model Context Protocol (MCP) server, supporting content ingestion from various data sources such as Slack, Discord, websites, Google Drive, and providing AI-powered search and retrieval capabilities.

MCP server for searching Airbnb listings and retrieving detailed information

Notion's official MCP server, implementing the Model Context Protocol to connect AI assistants with the Notion API.

Official Firecrawl MCP server - adds powerful web crawling capabilities for Cursor, Claude, and other LLM clients

A Python-based Model Context Protocol (MCP) server that integrates Wolfram Alpha via API, providing math, science, and data query capabilities for chat applications.

Desktop Commander MCP is an MCP server designed for Claude, giving it terminal control, file system search, and diff file editing capabilities.

Serena is a powerful coding agent toolkit that transforms large language models (LLMs) into a fully functional agent, working directly on your codebase.

GitHub MCP Server is a Model Context Protocol (MCP) server designed to seamlessly integrate with the GitHub API, providing developers and tools with advanced automation and interaction capabilities.

MCP server for interacting with the Godot game engine. Provides tools for launching the editor, running projects, and capturing debug output.

Markdownify is a Model Context Protocol (MCP) server that converts various file types and web content into Markdown format. It provides a set of tools to convert content from PDFs, images, audio files, web pages, and more into easy-to-read and shareable Markdown text.

A lightweight wrapper to make Anthropic's Model Content Protocol (MCP) tools compatible with LangChain and LangGraph.

MCP server for Kubernetes cluster management commands

Official Redis MCP server providing a natural language interface for intelligent agent applications, efficiently managing and searching Redis data.

ONNX Runtime: A cross-platform, high-performance machine learning inference and training accelerator.

llama.cpp is a LLaMA model inference engine written in pure C/C++, designed for high performance and low resource usage.

Ollama: Run, create, and share large language models locally.