Best SWE-Agent Alternatives

Open-source AI agent platform (formerly OpenDevin) for building developer agents that modify code, run shell commands, browse the web, and call APIs through a composable Python SDK and CLI. OpenHands runs agents in sandboxed Docker containers accessed via SSH, supports Claude/GPT/any LLM, and has solved 50%+ of real GitHub issues in software engineering benchmarks.

Devin is Cognition's managed AI software engineer for delegating engineering tasks to cloud and desktop agents. It can plan work, navigate codebases, write and run code, test changes, open PRs, review/autofix issues, and collaborate through GitHub, GitLab, Bitbucket, Linear, Jira, Slack, and Teams. Current Devin surfaces include Devin Cloud, Devin Desktop, Devin CLI, Devin Review, Windows VM support, DeepWiki, Ask Devin, and team/enterprise controls.

Open-source AI coding assistant that runs in your terminal, letting developers chat naturally with an LLM that has full project context. Mentat coordinates multi-file edits across entire codebases — refactoring, feature implementation, bug fixing — with Git integration for review and revert. Requires GPT-4 API access, installs via pip; eliminates copy-paste friction of web AI tools.