AIToolStack
Log in
Back to Home

Prompting

Tools to improve AI prompt engineering

72 tools available

Chroma

Open-source embedding database for AI applications. Store, query, and manage vector embeddings efficiently.

OPEN-SOURCEVIEW →

Weaviate

Open-source vector database with built-in ML models for semantic search and RAG applications. GraphQL API for easy integration.

FREEMIUMVIEW →

Langfuse

Open-source LLM engineering platform for observability, analytics, and prompt management. Track LLM application performance.

FREEMIUMVIEW →

Replicate

Cloud platform for running AI models with simple API access. Deploy and scale machine learning models easily.

PAY-PER-USEVIEW →

Portkey

AI gateway for routing, caching, and monitoring LLM API calls across multiple providers. Enterprise-grade reliability.

FREEMIUMVIEW →

OpenAI Playground

Interactive interface for experimenting with OpenAI models, testing prompts, and adjusting parameters. Official OpenAI tool for prompt testing.

PAIDVIEW →

Pinecone

Vector database for AI applications with easy integration for similarity search and RAG systems. High-performance vector operations.

FREEMIUMVIEW →

Anthropic Console

Web interface for testing and fine-tuning prompts with Claude AI models. Official Anthropic development environment.

PAIDVIEW →

LlamaIndex

Data framework for building LLM applications with custom data sources. Simplify data ingestion and retrieval for AI apps.

OPEN-SOURCEVIEW →

LangChain

Framework for developing applications with language models through composable chains. Build complex AI workflows and applications easily.

OPEN-SOURCEVIEW →

Modal

Cloud platform for running AI workloads with serverless GPU compute. Deploy and scale ML models efficiently.

PAY-PER-USEVIEW →

LangSmith

Platform for testing, evaluating, and monitoring LLM applications. Debug and improve AI app performance systematically.

FREEMIUMVIEW →

OctoAI

Platform for running and optimizing AI models with efficient inference. Fast deployment and scaling of ML models.

PAY-PER-USEVIEW →

Gradio

Python library for creating interactive web interfaces for machine learning models. Build and share AI demos quickly.

OPEN-SOURCEVIEW →

Anyscale

Platform for scaling AI workloads and LLM applications using Ray framework. Distributed computing for AI.

ENTERPRISEVIEW →

Phoenix

Open-source AI observability platform for evaluating, troubleshooting, and fine-tuning LLM applications.

OPEN-SOURCEVIEW →

Together AI

Platform for running and fine-tuning open-source AI models at scale. High-performance inference and training.

PAY-PER-USEVIEW →

Helicone

Open-source LLM observability platform for monitoring costs, latency, and usage across AI models. Simple integration.

FREEMIUMVIEW →

AutoGPT

Open-source application that chains LLM instances to autonomously complete tasks. AI agent framework for complex workflows.

OPEN-SOURCEVIEW →

Vercel AI SDK

Toolkit for building AI-powered applications with React, Vue, and other frameworks. Streamlined AI app development.

OPEN-SOURCEVIEW →

Hugging Face Transformers

Open-source library and platform for natural language processing with pre-trained models. Access thousands of AI models.

FREEMIUMVIEW →

Chainlit

Python framework for building conversational AI applications with a focus on developer experience and UI components.

OPEN-SOURCEVIEW →

Mem0

Memory infrastructure for AI applications that provides personalized AI experiences through intelligent memory management.

FREEMIUMVIEW →

Pydantic AI

Python framework for building production AI applications with type safety and structured outputs from LLMs.

OPEN-SOURCEVIEW →

PromptLayer

Tool for tracking, evaluating and managing prompts across different LLM providers with detailed analytics and versioning.

FREEMIUMVIEW →

Promptfoo

Command-line tool and library for evaluating and red-teaming LLM outputs with automated testing capabilities.

OPEN-SOURCEVIEW →

Dust

Platform for building AI assistants and workflows with advanced prompt engineering and model orchestration tools.

FREEMIUMVIEW →

LiteLLM

Python SDK that provides a unified interface for 100+ LLM APIs with consistent formatting and error handling.

OPEN-SOURCEVIEW →

Marvin

Lightweight AI engineering framework that brings natural language interfaces to Python code and data.

OPEN-SOURCEVIEW →

BentoML

Open platform for high-performance ML model serving with support for LLMs and easy deployment workflows.

OPEN-SOURCEVIEW →

Instructor

Python library that provides structured outputs and validation for OpenAI's GPT models using Pydantic.

OPEN-SOURCEVIEW →

Haystack

Open-source framework for building search systems and RAG applications with advanced document processing capabilities.

OPEN-SOURCEVIEW →

LangGraph

Framework for building stateful, multi-actor applications with LLMs using graph-based workflow orchestration.

OPEN-SOURCEVIEW →

Guardrails AI

Framework for adding structure, type safety and quality guarantees to LLM outputs with validators and correctors.

OPEN-SOURCEVIEW →

Guidance

Microsoft's library for controlling large language models with structured generation and template-based prompting.

OPEN-SOURCEVIEW →

Rivet

Visual AI programming environment for creating complex AI agents and workflows using a node-based interface.

OPEN-SOURCEVIEW →

Mirascope

Python toolkit for building LLM applications with type safety, prompt management, and structured outputs.

OPEN-SOURCEVIEW →

Phidata

Platform for building AI assistants and agents with memory, knowledge, and tools integration capabilities.

OPEN-SOURCEVIEW →

Autogen

Microsoft's framework for multi-agent conversation systems that enable automated collaboration between AI agents.

OPEN-SOURCEVIEW →

PromptHero

A community-driven platform for discovering, sharing, and optimizing AI prompts across different models. Features a marketplace for buying and selling prompts.

FREEMIUMVIEW →

PromptPerfect

An AI-powered prompt optimization tool that helps improve prompts for ChatGPT, Midjourney, DALL-E, and other AI models. Automatically enhances prompt quality and effectiveness.

FREEMIUMVIEW →

PromptSource

An open-source toolkit for creating, sharing, and using natural language prompts for diverse NLP tasks with a large prompt collection.

OPEN-SOURCEVIEW →

Cohere

Platform providing access to large language models via API with fine-tuning capabilities. Enterprise-focused NLP solutions.

FREEMIUMVIEW →

Weights & Biases

MLOps platform for experiment tracking, model evaluation, and LLM fine-tuning. Track and compare AI model performance.

FREEMIUMVIEW →

Vertech Academy v2.1.1

Improve your grades in 60 days. Most students use AI to copy answers. Then exam day hits and they're lost. Vertech Academy gives you the exact prompts and frameworks top students use to master any subject, retain more, and ace their exams — using ChatGPT, Claude, or Gemini. ✅ Free to joi...

FREEMIUMVIEW →

CrewAI

Framework for orchestrating role-playing, autonomous AI agents to collaborate and complete complex tasks together.

FREEMIUMVIEW →

SpacePrompts

SpacePrompts is a tool designed to save, organize and sync AI prompts for greater productivity and workflow efficiency. It offers users a platform to manage and store their AI prompts in a structured, searchable library, eliminating the hassle of scattered or lost prompts. With SpacePrompts, prompts...

FREEMIUMVIEW →

Arize AI

ML observability platform for monitoring model performance and detecting issues. Comprehensive model monitoring solution.

ENTERPRISEVIEW →

Humanloop

A collaborative platform for managing prompts, fine-tuning models, and evaluating AI systems with comprehensive MLOps capabilities.

FREEMIUMVIEW →

Vellum

Platform for building, testing, and monitoring LLM applications with visual prompt engineering tools. Enterprise LLM operations.

ENTERPRISEVIEW →

PromptBase

Marketplace for buying and selling high-quality AI prompts for various models. Connect prompt engineers with users needing optimized prompts.

FREEMIUMVIEW →

Scale Spellbook

An enterprise-grade platform for building, testing, and deploying large language model applications with advanced prompt engineering tools.

ENTERPRISEVIEW →

FlowiseAI

An open-source UI visual tool to build customized LLM flows using LangChain. Create AI applications with drag-and-drop interface.

OPEN-SOURCEVIEW →

Promptify

A structured prompting library and framework for creating consistent, reliable prompts with built-in validation and optimization features.

OPEN-SOURCEVIEW →

LangWatch

A comprehensive monitoring and analytics platform for LLM applications with prompt tracking, performance metrics, and optimization insights.

FREEMIUMVIEW →

Prompt Injection

A security-focused tool for testing and detecting prompt injection vulnerabilities in LLM applications with comprehensive security analysis.

PAIDVIEW →

LangEvals

A comprehensive evaluation framework for language models and prompts with automated testing, benchmarking, and performance analysis.

FREEMIUMVIEW →

Promptable

A platform for building and deploying LLM applications with advanced prompt engineering tools and workflow automation.

FREEMIUMVIEW →

Promptmetheus

An IDE-like environment for prompt engineering with version control, collaboration features, and integrated testing capabilities.

FREEMIUMVIEW →

Weights & Biases Prompts

A specialized tool within W&B for tracking, versioning, and optimizing prompts with integrated experiment management and visualization.

FREEMIUMVIEW →

PromptLoop

A spreadsheet-native tool that brings AI text generation and analysis directly into Google Sheets and Excel with custom prompts.

FREEMIUMVIEW →

Pezzo

A developer-first LLMOps platform that streamlines prompt management, version control, and observability for AI applications.

FREEMIUMVIEW →

LangKit

An open-source toolkit for monitoring and evaluating LLM applications with focus on prompt performance and model behavior analysis.

OPEN-SOURCEVIEW →

Prompt Security

A comprehensive security platform for LLM applications that detects and prevents prompt injection attacks and other AI-specific vulnerabilities.

PAIDVIEW →

YiVal

An open-source GenAI-Ops framework for automatically tuning and evaluating prompts, model parameters, and retrieval configurations.

OPEN-SOURCEVIEW →

PromptBench

A comprehensive benchmarking platform for evaluating and comparing prompts across different models and tasks with standardized metrics.

OPEN-SOURCEVIEW →

PromptChainer

A visual flow-based tool for creating complex AI workflows by chaining multiple prompts and models together with conditional logic.

FREEMIUMVIEW →

LangChain Hub

A centralized repository for sharing and discovering LangChain prompts, chains, and agents with community contributions.

FREEMIUMVIEW →

aimag.me

A one-person project built from scratch — no frameworks, no templates, no team. Just PHP, Tailwind CSS, and carefully orchestrated AI models. Ask a question, draw cards from t...

UNKNOWNVIEW →

Agenta

Open-source platform for LLM app development with prompt management, evaluation, and A/B testing capabilities.

OPEN-SOURCEVIEW →

OpenPrompt

An open-source framework for prompt-learning that provides standardized interfaces for different prompt-based learning algorithms and models.

OPEN-SOURCEVIEW →

DSPy

Framework for algorithmically optimizing LM prompts and weights, especially for complex tasks requiring reasoning.

OPEN-SOURCEVIEW →