Editor extensions

Compare all Open in the finder

Extensions install into the editor you already use. They are the cheapest way to try a new model or provider, many are open source and bring your own key, and the host editor matters more than the operating system.

Amazon Q Developer

Amazon Web Services

Editor extension

AWS's assistant in IDE plugins and a CLI. New signups closed in May 2026 and support ends 30 April 2027, AWS points subscribers to Kiro.

Free tier2026-08-24

Augment Code

Editor extension

Augment's agent and Context Engine in VS Code, JetBrains and Vim, the Auggie CLI and Cosmos cloud Experts. One flat Business plan covers up to 50 seats.

From $100/mo2026-08-23

BLACKBOX AI

Editor extension

BLACKBOX AI's VS Code extension, CLI and web app with chat, completions and a multi-agent mode that fans one task out to Blackbox, Claude Code, Codex and Gemini.

Free tier2026-08-23

Cline

Cline Bot Inc.

Editor extension

Open source agent for VS Code, JetBrains and the terminal. Bring your own key for any provider, local models included, with an MCP marketplace and plan-then-act modes.

Free tier2026-08-23

Cody

Sourcegraph

Editor extension

Sourcegraph's editor assistant with chat, autocomplete and context from code search. Free and Pro ended on July 23, 2025, and Cody now ships only with Sourcegraph Enterprise.

2026-08-23

Continue

Editor extension

Apache-2.0 coding agent for VS Code and JetBrains with a terminal CLI, configured in YAML for any provider. Cursor acquired the team in June 2026, the repo is read-only.

Free2026-08-23

Gemini Code Assist

Google

Editor extension

Google's extension for VS Code and JetBrains with chat, completions, agent mode and a Gemini CLI quota. Sold per user as Standard or Enterprise, the free tier ended in June 2026.

From $22.8/mo2026-08-23

GitHub Copilot

GitHub

Editor extension

GitHub's assistant for VS Code, JetBrains, Visual Studio, Xcode and Neovim, with a cloud agent. Paid plans meter agent usage in AI credits.

Free tier2026-08-23

JetBrains AI

JetBrains

Editor extension

AI Assistant and the Junie agent in JetBrains IDEs. Completions on JetBrains models are free, cloud agents draw from monthly AI Credits. Claude Agent and Codex plug in over ACP.

Free tier2026-08-23

Kilo Code

Kilo

Editor extension

Open source agent for VS Code, JetBrains and the terminal, with cloud agents and a phone app. The Kilo Gateway serves 500+ models at provider rates, or bring your own keys.

Free tier2026-08-23

Roo Code

Roo Code, Inc.

Editor extension

Open source VS Code agent forked from Cline, with modes, an orchestrator that delegates subtasks, checkpoints and an MCP marketplace. The extension was shut down on May 15, 2026.

Free2026-08-23

Sweep

Sweep AI

Editor extension

JetBrains plugin from Sweep AI with an agent, next-edit autocomplete on its own Tab model, inline editing and code review. The VS Code and Zed builds ship autocomplete only.

Free tier2026-08-23

Tabby

TabbyML

Editor extension

Self-hosted open source code completion server with VS Code, JetBrains and Vim extensions. Runs local models or any OpenAI compatible endpoint.

Free tier2026-08-24

Tabnine

Editor extension

Enterprise code assistant with completions, chat and an agent in VS Code, JetBrains, Visual Studio and Eclipse, plus a CLI. Deploys as SaaS, in a VPC, on premises or air-gapped.

From $39/mo2026-08-23

Also available as a editor extension (11)

Products whose primary form is something else but ship one of these too.

Amp

Sourcegraph

Terminal agent

Sourcegraph's terminal agent. Low, medium, high and ultra modes pick the model per task, subagents run in parallel, orbs run threads on remote machines.

Free tier2026-08-23

Claude Code

Anthropic

Terminal agent

Anthropic's terminal agent. Reads the codebase, edits files and runs commands, with a VS Code and JetBrains extension and a web surface on the same engine.

From $20/mo2026-08-23

CodeRabbit

Cloud agent

Reviews pull requests on GitHub, GitLab, Bitbucket and Azure DevOps, with a CLI and a VS Code extension for pre-commit review. Public repositories are reviewed at no charge.

Free tier2026-08-23

Codex CLI

OpenAI

Terminal agent

OpenAI's open source terminal agent. Signs in with a ChatGPT account and shares the plan's usage window, or bills an API key at token prices.

Free tier2026-08-23

Google Antigravity

Google

AI-native IDE

Google's agentic development platform. A desktop app, a VS Code based IDE, a CLI and editor extensions share one harness. Free, with higher limits on Google AI Pro and Ultra.

Free tier2026-08-23

Kimi Code CLI

Moonshot AI

Terminal agent

Moonshot AI's terminal agent for the Kimi models, a single binary with a VS Code extension. Logs in with a Kimi membership or a platform key, runs in Zed or JetBrains over ACP.

Free tier2026-08-23

Mistral Vibe

Mistral AI

Terminal agent

Mistral's open source terminal agent on Devstral and Mistral Medium, with VS Code and JetBrains extensions and a web sandbox. Signs in with a Mistral account or an API key.

Free tier2026-08-24

OpenCode

Anomaly

Terminal agent

Open source terminal coding agent from Anomaly, with a desktop app in beta and a VS Code extension. Works with any provider through your own keys, plus the hosted Zen and Go plans.

Free tier2026-08-23

Qoder

Alibaba

AI-native IDE

Alibaba's agentic IDE for macOS, Windows and Linux with a JetBrains plugin, a CLI and cloud agents. Quest runs multi agent tasks in a sandbox, with a phone app for approvals.

Free tier2026-08-23

Qodo

Cloud agent

Reviews pull requests on GitHub, GitLab, Bitbucket and Azure DevOps and runs pre-PR review in VS Code and JetBrains. Code generation is deprecated. Formerly Codium.

From $30/mo2026-08-23

Rovo Dev

Atlassian

Terminal agent

Atlassian's coding agent, run from the ACLI, the VS Code extension or as reviews on Bitbucket and GitHub. Paid per developer with monthly credits, no free tier.

From $20/mo2026-08-24