Alternatives to Simplemma

spaCy is the open-source Python NLP library for fast, production-grade text processing and information extraction at scale.

TypeLLM returns typed, schema-conformant values from text and images in one API call — no JSON repair loops.

NLTK is the free Python library for tokenization, POS tagging, parsing, and 50+ linguistic corpora.

Hazm is an open-source Python library for Persian NLP: normalization, tokenization, tagging and dependency parsing.

HanLP is a production-oriented multilingual NLP toolkit with a deep focus on Chinese, built on PyTorch and TensorFlow 2.x.

Zero-dependency JavaScript NLP library with a full pipeline for Node.js and the browser.

Open-source Java machine-learning framework plus a free REST API with 14 pre-trained NLP classifiers

Django AI Assistant adds LLM chat, RAG, and Tool Calling into your existing Django app

Compromise is a zero-dependency JavaScript NLP library for offline POS tagging, named entity recognition, and verb conjugation in English

Open-source wire protocol suite that standardizes LLM, vector, graph, and embedding calls so you swap providers in config, not code

BAML is a type-safe, Turing-complete language for agentic and LLM code that compiles typed Python and TypeScript SDKs.

Mirascope is an open-source Python library that turns LLM calls, tools, and prompt versioning into plain decorated functions.

Open-source Python library that constrains LLM output with regex, context-free grammars, and inline control flow.

Outlines is a Python library for structured generation that constrains LLM decoding so JSON, regex, and grammar outputs are valid every

Open-source TypeScript SDK for streaming AI apps and agents across 100+ models, with built-in provider fallbacks

Prompt engineering IDE to compose, test, and score prompts across 150+ LLMs and 15 providers.

Pure Rust language detection library for 80+ languages.

Genkit is Google's open-source AI SDK for building agentic AI apps in TypeScript, Go, Python, and Dart.

RubyLLM is the Ruby-native AI framework for chat, agents, tools, and RAG across 19 providers with one API.

Free OpenAI API examples and Python notebooks for building chat, embeddings, and RAG apps

Open-source Python framework that adds retrieval-augmented document Q&A to your app in five lines of code

Open-source Python RAG framework that turns your PDFs, Notion pages, and websites into a queryable AI app in a few lines of code.

DiscuroAI chains GPT-3 prompt templates and DALL-E 2 image calls into multi-step workflows you run with one API request that returns JSON.

Rig is an open-source Rust LLM framework for shipping type-safe AI agents across 20+ providers.

Mellea turns type-annotated Python functions into validated, testable LLM calls with token-level constrained decoding.

Marvin is an open-source Python framework that turns LLM calls into typed functions, agents, and Pydantic-validated results.

Go SDK for AI apps: one type-safe API for text generation, streaming, tools and MCP across 25+ LLM providers.

Open-source Python library for building and auto-optimizing LLM workflows, from RAG systems to agents.

Open-source Python SDK from Backblaze for chaining generative AI video, audio, and image jobs with verifiable provenance metadata on every output.

Open-source Ruby gem giving one unified API across Anthropic, DeepSeek, Google, Mistral, Llama, and OpenAI