Marketplace

Freemium

QuillBot

AI paraphrasing, summarization, and grammar checking tool for writers

Web Browser Extension Word Add-in

291

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Open Source

LangChain

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

API Python JavaScript

353

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Paid

OpenAI API

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

Web API

41

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Freemium

Rytr

Affordable AI writing assistant for creating quality content in 40+ languages

Web Browser Extension

169

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Freemium

Consensus

AI search engine that finds and summarizes scientific consensus on any question

Web

468

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Freemium

Elicit

AI research assistant that automates literature review and evidence synthesis

Web

134

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Open Source

Haystack

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

API Python Docker

253

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Freemium

You.com

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

Web Browser Extension

148

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Freemium

HyperWrite

AI writing assistant that helps you draft, rewrite, and complete any written content

Web Browser Extension

322

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Open Source

LlamaIndex

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

API Python TypeScript

168

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