Free

Framework for building LLM apps — prompts, chains, agents, tool use, RAG.

Industrial-strength NLP in Python — tokenization, NER, parsing, custom pipelines.

Open-source conversational AI framework — intents, entities, dialogue policies.

Offline neural translation library + GUI app — no server required.

Fast, small neural TTS that runs on a Raspberry Pi — by the Rhasspy project.

Deep-learning text-to-speech toolkit — many languages, voice cloning, offline.

The de-facto open-source web UI for Stable Diffusion image generation.

OpenAI Whisper speech-to-text, ported to C/C++ — fast, offline transcription.

Production-ready RAG and search pipelines by deepset — composable, typed nodes.

Data framework for connecting LLMs to your private data (the RAG specialist).