What is opengravity?

OpenGravity is a browser-based coding workspace built with plain HTML, CSS, and JavaScript, meant to work as a free clone of Google's Antigravity interface. It requires no installation: you just serve the project files and open them in a browser. The creator built it after running into rate limits on the original Google tool and wanted something similar without the restrictions, so they used Google AI Studio and Gemini to recreate the look and basic behavior of that interface. Inside the browser, OpenGravity gives you a real terminal (powered by a project called WebContainer API, shown through a tool called xterm.js) that behaves like a Linux command line, along with a file system that stays in sync with your local files. A built in agent can read your instructions, run commands in that terminal, and edit files on its own to carry out basic coding tasks, such as setting up a new project and installing packages. This is a bring your own key tool, meaning you supply your own Gemini API key rather than paying the maker for access. Right now it only works with Google's Gemini models, and the key is entered through a small icon in the interface, then stored privately in your browser rather than sent to any outside server. The project describes itself as an early, work in progress alpha. The author is a student who built this in their spare time and says the agent logic, orchestration, and interface still need real work from other contributors, including support for AI providers besides Gemini, better handling of complex tasks, and a proper settings screen. OpenGravity is released under the GPL-3.0 license, which requires that any modified versions you share stay open source under the same terms.