Prompto
Interact with various LLMs in your browser
Prompto launched on May 3, 2024 with 202 votes, #254 of 4,539 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 2 years on.
What it does
Prompto is an open-source web app to easily interact with different large language models. Fine-tune results, chat or query, save prompts & more.
Prompto is an open-source web application designed to make interacting with LLMs simple and efficient.
Does a similar job
all alternatives →
Promptui – Rich UI elements for cli prompts in Go2017 · github.com · ▲196Interactive prompt for command-line applications. Contribute to manifoldco/promptui development by creating an account on GitHub.

Prompto - Your Prompt Engineer2025 · prompto.cc · ▲11Prompt Engineering Toolkit for Developers & Creators
I wrote an open-source browser alternative for Computer Use for any LLM2024 · github.com · ▲180Hey HN, I made Browser-Use, an open-source tool that lets (all Langchain supported) LLMs execute tasks directly in the browser just with function calling. It allows you to build agents that interact with web elements using natural language prompts. We created a layer that simplifies website interaction for LLMs by extracting xPaths and interactive elements like buttons and input fields (and other fancy things). This enables you to design custom web automation and scraping functions without manual inspection through DevTools. Hasn't this been done a lot of times? Good question, as a general…


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