GPT LLMs Applications Tools

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.

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

Morphik.ai

Morphik

Open source AI-driven search engine for private documents

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.

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

Converts screenshots, mockups, Figma designs, and screen recordings into clean, functional code. Supports multiple AI models (Gemini 3 Flash, GPT-5.5, Claude Opus 4.8) and output stacks (HTML+Tailwind, React, Vue, Bootstrap, etc.). Also supports URL cloning and video-to-code conversion.

Get started with building Fullstack Agents using Gemini 3.5 Flash and LangGraph

together.ai chat

Together

Similar to HuggingChat, with the option of different open source models, support for DeepSeek R1, LLaMA, QWen, Flux Schnell. 60 free messages per day.

ChatGPT Sidebar

Google

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

monica

Monica

AI assistant that provides help with a variety of tasks such as searching, reading, writing, translating, drawing, and more. Standalone apps and browser plug-ins available

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

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

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

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

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

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.

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

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

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.

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

Open source codebase powering the HuggingChat app. URL

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