Alternatives to fanbox

Open-source agentic coding assistant that runs inside your terminal and wires any LLM into your CLI workflow.

Open-source coding agent that reads your repo, edits files, and runs terminal commands across VS Code, JetBrains, CLI, and a desktop app.

Free, open-source AI code assistant plugin for JetBrains IDEs with spec-driven development and agent mode

Open-source AI coding agent that runs in your terminal, IDE, or desktop app and connects to 75+ LLM providers.

Open-source AI coding agent for VS Code and JetBrains, acquired by Cursor in January 2026 and now an unmaintained codebase you fork, not subscribe to.

Open platform for running fleets of cloud coding agents across your SDLC, with an agentic terminal and a CLI agent that works anywhere

Open-source autonomous AI coding agent that plans, executes, and deploys tasks inside VS Code and JetBrains IDEs.

Open-source AI pair programming in your terminal, with Git-native commits and whole-codebase awareness.

GPT Engineer is a free, MIT-licensed open-source CLI and browser tool that turns a plain-English spec into a runnable web app codebase.

Pi Coding Agent is a free, MIT-licensed terminal coding agent harness you shape to your own workflow with TypeScript extensions, skills, prompts, and themes.

Open-source agent skills that turn text or image prompts into CAD models, G-code, and robot files.

Kilo is an open-source AI coding agent with 500+ models across VS Code, JetBrains, CLI, cloud, and Slack — at exact provider rates.

Open-source desktop workspace that runs Claude Code, Codex, OpenClaw, and other CLI coding agents side by side with per-task model routing.

Open-source spec framework that keeps AI coding agents building the right thing, spec-first.

Open-weight agentic coding models — Laguna XS 2.1 (33B) and Laguna S 2.1 (118B) — built for code that cannot leave your security boundary.

Replit Agent turns a plain-English prompt into a runnable full-stack app inside your browser, then deploys it to a live URL.

Apidog binds API design, debugging, mocking, testing, and docs to one OpenAPI definition — with MCP and agent debugging built in.

Open-source dev platform that combines no-code, full-code, and AI with reusable full-stack MicroApps.

Devin Desktop is a free AI coding assistant and agent IDE with unlimited Tab completions and an Agent Command Center for fleets of local

Sourcegraph Cody is an AI coding assistant that grounds chat, completions, and agent workflows in your entire multi-repo codebase.

Claude Code is Anthropic's agentic coding assistant that plans, edits, and runs commands across your repo from the terminal, IDE, or browser.

Junie is JetBrains' AI coding agent — terminal, IDE, GitHub, or GitLab — running on any model you bring, with zero-markup BYOK and a local Mac build.

Open Design turns the coding agent you already run into a local-first design engine for prototypes, slides, and HTML video

Terminal-native coding agent with a native Rust core, hash-anchored edits, and the IDE wired into your shell

Z.ai is a free browser-based AI assistant for presentations, writing, and agentic coding, running on the GLM model series.

Moonshot AI's agentic workspace where deep research, slides, sheets, sites and always-on agents produce a finished deliverable instead of a draft.

Open-source screenshot-to-code converter: drop in a mockup, Figma file, or screen recording, get HTML, React, or Vue back.

Ponytail is a free, MIT-licensed ruleset that makes AI coding agents write the least code that works.

Open-source self-hosted AI assistant that actually does the work — browser, email, calendar, code, SEO, and multi-platform publishing.

A desktop console that starts, tracks, and lands the work of every coding agent you run, each in its own terminal and branch.