Marketplace

Paid

OpenAI API

Access GPT-4o and GPT-3.5 models via API for any natural language task

Web API

41

Visit Details

Freemium

Cohere

Enterprise NLP API for search, classification, and text generation

Web API

58

Visit Details

Freemium

DeepL Write

AI writing assistant that improves grammar, tone, and written communication

Web API Browser Extension

350

Visit Details

Freemium

QuillBot

AI paraphrasing, summarization, and grammar checking tool for writers

Web Browser Extension Word Add-in

291

Visit Details

Freemium

Wordtune

Personal AI writing assistant for rewriting, expanding, and clarifying text

Web Browser Extension

435

Visit Details

Open Source

LangChain

Framework for building LLM-powered applications with memory, tools, and agents

API Python JavaScript

353

Visit Details

Open Source

Haystack

Open-source NLP framework for building production-ready AI search and QA systems

API Python Docker

253

Visit Details

Open Source

LlamaIndex

Data framework for connecting LLMs to external data sources and knowledge bases

API Python TypeScript

168

Visit Details

Freemium

Perplexity AI

AI-powered answer engine that provides accurate, sourced responses in real time

Web iOS Android

294

Visit Details

Freemium

You.com

Privacy-first AI search engine with customizable results and built-in AI assistant

Web Browser Extension

148

Visit Details