GPT LLMs Applications Tools

Morphik.ai

Morphik

Open source AI-driven search engine for private documents

A unified API gateway for 400+ AI models (OpenAI, Anthropic, Google, Mistral, etc.). Zero markup pricing, 5% commission on inference traffic, supports smart routing/failover

Self-hostable AI gateway with 4-tier automatic fallback routing across 36+ providers. OpenAI-compatible API with quota tracking and zero-cost fallback to free tiers.

NoteGPT

Notegpt

NoteGPT is a smart note-taking tool that can record, transcribe, and summarize various content, such as meetings, lectures, podcasts, YouTube videos, news briefings, and articles.

Open-source platform to simulate, evaluate, trace, guardrail, route, and optimize LLM and AI agent apps in one feedback loop, so agents don't just get monitored, they self-improve. Self-hostable. Apache-2.0.

Get up and running with Llama 2, Mistral, Gemma, and other large language models.

Learn about

Google

AI learning Assistant developed by Google.Grasp new topics and deepen your understanding with a conversational learning companion that adapts to your unique curiosity and learning goals.

The official Python library for the OpenAI API, It is generated from OpenAI specification with Stainless

Crawl a site to generate knowledge files to create your own custom GPT from a URL

ChatGPT Sidebar

Google

ChatGPT Sidebar is an artificial intelligence assistant you can use while browsing any website.

LangChain is a framework for developing applications powered by language models.

Google AI Studio is a free, web-based developer tool that enables you to quickly develop prompts using the latest Gemini 3.5 Flash models and then get an API key to use in your app development. Available regions

AIPRM for ChatGPT

Google

Browser plug-in, providing a series of selected ChatGPT instruction templates, and even creating your own, and adjusting AI tone and writing style

AI product built by Quora. Can use ChatGPT, Sage, Dragonfly, Claude bots for free. All you need is an email address to register. GPT-4 can be used once a day for free

AI Research Assistant developed by Google. Upload PDFs, websites, YouTube videos, audio files, Google Docs, or Google Slides, and NotebookLM will summarize them and make interesting connections between topics. Audio Overview feature can turn your sources into engaging “Deep Dive” discussions with one click.

This library provides unofficial Go clients for OpenAI API. support: ChatGPT, GPT-3, GPT-4, DALL·E 2

Open source, ChatGPT shortcut commands that double productivity, partitioned by domain and function, can filter prompt words by tag, keyword search and one-click copy.

Open-source LLM router that classifies prompts in ~10ms and routes to the optimal model tier (free/cheap/premium/reasoning). OpenAI-compatible proxy with agentic detection, session pinning, and 429 fallback.

Desktop application that uses ChatGPT API (OpenAI API) to store all chat messages and prompts locally, thus reducing the risk of data loss. A bit more stable to use than the web version

Use different chatbots in one app, currently supporting ChatGPT, new Bing Chat, Google Bard, Claude, and 10+ open-source models including Alpaca, Vicuna, ChatGLM etc.

Open source codebase powering the HuggingChat app. URL

Helicone is the open-source LLM observability platform for logging, monitoring, and debugging AI applications.

Effortlessly run LLM backends, APIs, frontends, and services with one command.

One-Click to get a well-designed cross-platform ChatGPT web UI, with GPT3, GPT4 & Gemini 3.5 Flash support.