GitHub Copilot

Zed

Freemium

Zed is an open-source code editor built for speed, with a native interface and GPU-accelerated rendering. It includes an agent panel that can read your project, edit files, and run commands, plus edit predictions that suggest the next change as you type. Zed connects to hosted models through a Pro subscription or to your own keys from Anthropic, OpenAI, Google, Bedrock, Ollama, and other providers. It also runs external agents such as Claude Agent and Codex CLI through the Agent Client Protocol. Multiplayer editing lets several developers share one workspace in real time.

Warp

Freemium

Warp is a terminal built for coding agents, available as a desktop app and a command-line agent. You can run its agent in any terminal, launch cloud agents that work on a repository without your machine, and review what they changed. The terminal keeps command history, blocks, and workflows in a searchable drive, and indexes your codebase so the agent can find relevant files. It supports frontier and open-weight models, or you can bring your own API keys and inference endpoint. Paid plans include a monthly pool of agent usage at API rates, with add-on spending controls.

Replit

Freemium

Replit is a browser-based development platform where an agent builds apps and websites from a plain-language description. You start with a prompt or the design canvas, then edit the generated code in a cloud IDE. The Agent writes full-stack code, and Replit provides authentication, a database, object storage, hosting, and monitoring without separate setup. More than 100 integrations connect services such as Stripe, OpenAI, and Google Workspace, and projects publish to a public URL. The free Starter plan includes daily Agent credits and one published app; Core adds fuller builds, more storage, and removes the Replit badge.

Kiro

Freemium

Kiro is an agentic IDE from AWS that turns a prompt into a written specification before it writes code. The agent produces requirements, a design, and a sequenced task list as markdown files, then implements them with parallel agents on your machine or in the cloud. It checks requirements for gaps and uses property-based tests to catch edge cases that unit tests miss. A headless CLI runs the same agent in CI pipelines. It supports MCP servers, Agent Client Protocol, AGENTS.md, and Open VSX extensions. The free tier includes 50 credits per month.

Devin

Freemium

Devin is a cloud coding agent that takes a task, works through it in its own virtual machine, and opens a pull request when it finishes. It runs in the cloud or on your machine, can start Windows, Mac, or Linux environments, tests changes in a browser, and records what it did. Large jobs split across parallel agents, and sessions continue after you close your laptop. It connects to GitHub, GitLab, Bitbucket, Slack, Jira, and Linear, and offers an API plus a generated repository wiki. Paid plans meter usage with daily and weekly quotas instead of charging per seat.

CodeRabbit

Paid

CodeRabbit reviews pull requests automatically and posts line-level comments, a change summary, and suggested fixes. It works with GitHub, GitLab, Bitbucket, and Azure DevOps, and can also review from the command line, an IDE, or inside coding-agent loops. Reviews use repository context and learn from replies to earlier comments. Pre-merge checks enforce team rules, and the triage view ranks open pull requests by risk and urgency. The bot can generate unit tests, resolve merge conflicts, and scan changes for security issues. Public repositories are reviewed free; private repositories need a paid per-developer plan after a 14-day trial.