Alternatives
10 best Antigen alternatives
Tools that cover the same task as Antigen (code), ranked by how completely their pricing, free tier and API access are documented. Checked Oct 4, 2026.
- Antigen starts at
- Not listed
- Free plan
- Free tier unknown
- API
- API available
- 01
Superagent
Superagent is an autonomous security factory for applications and repositories, combining PR security scans, dependency updates, red-team reports, runtime guardrails, and MCP/API access so agents can retrieve findings and return remediation reports.
Best for: Engineering teams that want agent-driven security loops tied to GitHub repositories and CI rather than manual checklist reviews alone.
- 02
Qodex
Qodex provides continuous testing for AI-speed engineering with real test runs on pull requests across API, UI, and security surfaces. Scenarios import from OpenAPI or Postman, evolve with code changes, and run via GitHub, CLI, chat, schedules, and deploy checks.
Best for: Engineering teams shipping frequently who want durable automated scenarios tied to PRs and production incidents.
- 03
Devin
Devin is Cognition’s autonomous software engineering agent that runs in the cloud or locally, tests in its own browser, and works toward merge-ready pull requests. Plans span individual coding quotas through team collaboration with Devin Cloud, DeepWiki, and enterprise controls.
Best for: Engineers and teams that want parallel cloud agents for implementation, review, and repo maintenance.
- 04
Pangolin
Pangolin is an open-source secure access and networking platform connecting workforces, AI agents, and infrastructure with identity-aware controls. Cloud plans add SSO, RBAC, audit logging, device posture, and an AI Gateway for identity-aware access to AI providers without sharing API keys.
Best for: Teams securing remote access to private apps, infrastructure, and AI workloads who want open-source software with optional managed cloud tiers.
- 05
Agno
Agno is a self-driving agent platform with an open Agent SDK, AgentOS runtime, and control plane that runs in your cloud. Teams build and serve customer-facing or internal agents with sessions, traces, memory, knowledge, evals, and integrations to Claude Code, Codex, and Cursor.
Best for: Platform engineers owning agent infrastructure in their own cloud who want a control plane without usage-based egress fees.
- 06
Capy
Capy is an AI software engineer that orchestrates parallel cloud coding agents to plan, build, review, and ship changes from Slack, desktop, and web clients. Use cases include PR review, visual QA, issue triage, documentation, migrations, refactors, and scheduled E2E testing.
Best for: Engineering teams that want fleet-style coding agents integrated into existing chat and desktop workflows.
- 07
Specific
Specific is a cloud platform built for coding agents to define infrastructure, run local dev environments, and deploy full stacks with one command. Pricing includes a free hobby tier plus paid Pro and Scale plans with usage-based compute, Postgres, storage, and Temporal workflows.
Best for: Teams using coding agents who want integrated define-deploy-observe infrastructure without stitching multiple vendors.
- 08
App Quality Copilot
Maestro is an open-source end-to-end UI testing stack for mobile and web, with free local CLI and Studio tools plus Maestro Cloud to run parallel tests on hosted devices.
Best for: Mobile and web teams who want YAML-readable UI tests and optional cloud parallel runs.
- 09
CodeReviewBot
CodeReviewBot is an AI code review service that integrates with GitHub pull requests. It automatically reviews changes, flags bugs and security or performance issues, and leaves detailed inline feedback so teams can merge with more confidence.
Best for: Developers and small teams using GitHub who want automated pull request reviews without building their own review tooling.
- 10
CodeThreat
CodeThreat is an AI-native application security platform combining SAST, SCA, secret scanning, and agentic pull request review. It targets false-positive reduction and autonomous security workflows for shipping teams.
Best for: Development teams that want consolidated AppSec scanning and AI-assisted PR review without surprise enterprise fees on the published tiers.
Antigen alternatives: common questions
What is the best free alternative to Antigen?
Superagent has an ongoing free plan. Open-source public repositories receive unlimited usage; private repos get 100 credits per month on the free tier. Free plans change, so check the vendor before relying on one.
What is the cheapest Antigen alternative?
Pangolin has the lowest listed starting price at $4/mo.
Which Antigen alternatives have an API?
Superagent, Qodex, Devin, Pangolin, Agno mention API or developer access.