Alternatives to Blacksmith

5 editor-selected alternatives · Blacksmith overview →

source: tools.alternatives · stored order · active records only; review scores are annotations and never change membership or order

A directional evidence panel appears only when the substitute rationale, trade-offs, sources, and verification date have been recorded. Older selections without that panel remain visible but are unclassified under the new evidence contract.

Woodpecker CI

open sourcefreeexplicit relation

Woodpecker CI is a community-maintained open-source CI/CD engine forked from Drone CI, designed as the default continuous integration solution for self-hosted Git platforms like Gitea, Forgejo, and Codeberg. With simple YAML pipeline configuration, minimal resource usage (~100MB RAM), and Apache-2.0 licensing, it provides a lightweight alternative to Jenkins and GitHub Actions for developers who prefer infrastructure they control.

100% Free and Open Source under the Apache-2.0 license ($0 software licensing). Entirely self-hosted on your own servers or Kubernetes clusters with no user seat fees, runner limits, or licensing costs.

Aviator

freemiumexplicit relation

Aviator is a developer productivity platform combining merge queues, stacked PRs, automated code review, and flaky test management. Its merge queue prevents broken main branches by testing PRs in order before merging. Flaky test detection identifies unreliable tests causing CI failures. Founded by ex-Google engineers who built internal developer tools at scale. YC-backed with $2.3M seed from Elad Gil. Used by Bosch, Benchling, and Lightspeed.

Freemium / subscription-based merge queue and engineering productivity platform. Developer tier ($0/mo) includes PR review workflows, stacked PR CLI (av), Chrome extension, and limited verification (10 PRs/mo). Pro tier ($24/user/mo) includes automated MergeQueue with parallel queues, batching, flaky test management / TestPilot quarantine, and release automation. Enterprise tier (custom pricing) adds monorepo-aware MergeQueue, SAML SSO, advanced RBAC, audit logs, and dedicated SLA.

Atlantis

82/100open sourceexplicit relation

Atlantis is a self-hosted Terraform pull request automation tool that runs plan and apply operations triggered by GitHub, GitLab, Bitbucket, or Azure DevOps comments. Type 'atlantis plan' on a PR to see infrastructure changes, then 'atlantis apply' to deploy. 9,100+ GitHub stars, Apache 2.0 licensed. Widely adopted as the standard for GitOps-style Terraform workflows, with locking to prevent concurrent modifications to the same resources.

100% free and open source under the Apache-2.0 license (9.2k+ GitHub stars) with $0 software licensing fees. Atlantis provides pull request-driven GitOps automation for Terraform and OpenTofu with zero seat fees, PR limits, or resource-under-management (RUM) charges. Teams self-host Atlantis as a Docker container or Kubernetes Helm deployment, paying only for their underlying cloud infrastructure.Review →

Dagger Container Use

open sourceexplicit relation

Dagger Container Use provides isolated container environments for AI coding agents, enabling multiple agents to work in separate sandboxed branches simultaneously. Built by the Dagger team, it ensures reproducibility and safety for autonomous code execution by giving each agent its own containerized workspace with full toolchain access.

Free and 100% open source under the Apache-2.0 license ($0 software cost). dagger-container-use runs locally on top of the open-source Dagger Engine and Docker runtime with zero licensing fees or seat subscriptions. Dagger Cloud offers optional paid enterprise pipeline caching, but local execution is completely free.

Argos CI

open sourcefreemiumexplicit relation

Argos CI is a visual regression testing platform that automatically catches unintended UI changes in CI/CD pipelines. It integrates with Playwright, Cypress, Storybook, and Puppeteer, featuring a stabilization engine that filters flaky pixel differences from genuine regressions. Used by teams at Meta and MUI for frontend quality gates.

Freemium visual regression testing and screenshot comparison platform with an open-source core on GitHub. Argos Cloud offers a Free Hobby plan ($0/mo, no credit card required) with 5,000 screenshots/month and 30-day retention. Pro plan starts at $30-$100/mo (with 15,000-35,000 included screenshots, 1-year retention, Slack/Teams alerts, and ~$0.004/screenshot overage). Enterprise offers custom volume, SAML SSO, fine-grained RBAC, and a 99.99% uptime SLA. Open-source core available for self-hosting.

Open-source Blacksmith alternatives

Woodpecker CI, Atlantis, Dagger Container Use, Argos CI — see all open-source developer tools.

Free Blacksmith alternatives

Woodpecker CI, Aviator, Argos CI offer a free plan or free tier.

More CI/CD Tools tools

same category, not editor-selected alternatives — see how Blacksmith compares →

CiliumCilium is a CNCF Graduated, Apache-2.0 project for Kubernetes networking, security, and observability using eBPF. It can replace kube-proxy, enforce identity-aware L3-L7 network policies, and add Hubble flow observability plus Tetragon runtime-security signals. Current source checks support GKE Dataplane V2 using Cilium/eBPF and Azure CNI Powered by Cilium for AKS.OrbStackOrbStack is a macOS application that replaces Docker Desktop with lightweight container and Linux VM management. Its docs emphasize fast starts, lower CPU and memory overhead, and native macOS integration with menu bar controls, file sharing, and network access to containers by name, with exact gains depending on workload. Supports Docker, Kubernetes, and full Linux VMs.RayRay is an open-source distributed computing framework built for scaling AI and Python applications from a laptop to thousands of GPUs. It provides libraries for distributed training, hyperparameter tuning, model serving, reinforcement learning, and data processing under a single unified API. Ray's public site highlights OpenAI and other enterprise users. Maintained by Anyscale with Apache-2.0 open-source licensing.ActAct is an open-source tool that runs GitHub Actions workflows locally using Docker containers that match GitHub's execution environment. It provides instant feedback on workflow changes without pushing to a repository, supports matrix builds, secret management, and artifact handling. Act can also replace Makefiles by using workflow files as task definitions, making it useful for both CI/CD development and local task automation across development teams.ClerkClerk is a complete authentication and user management platform for React, Next.js, and modern JavaScript frameworks. It provides pre-built UI for sign-in, sign-up, user profiles, organizations, MFA, passkeys, JWT sessions, webhooks, and billing. The Hobby plan supports up to 50,000 monthly retained users per app, with Pro, Business, and Enterprise tiers for growing teams.DockerIndustry-standard container platform for building, shipping, and running applications in isolated, reproducible environments. Package apps with all dependencies into portable containers using Dockerfiles and images. Docker Compose orchestrates multi-container applications. Docker Hub hosts millions of pre-built images. Docker Desktop provides GUI management on Mac/Windows. Essential for local development, CI/CD, and production deployments. The foundation of modern containerized infrastructure.ModalModal is a serverless compute platform that lets developers run AI workloads on GPUs with a Python-first SDK. Functions deploy with decorators, auto-scale from zero to thousands of containers, and bill per second. It supports LLM inference, fine-tuning, batch jobs, and sandboxes, with current GPU options including B200, H200, H100, A100, L40S, A10, L4, and T4. Modal’s 2026 Series C valued the company at $4.65B.PangolinIdentity-based remote access platform built on WireGuard that combines reverse proxy and VPN capabilities. Pangolin supports clientless browser access for web apps and client-based private-resource access across macOS, iOS, Windows, Linux, and Android, with zero-trust rules, peer-to-peer tunnels, automatic SSL, SSO/OIDC options, and cloud or self-hosted deployment.ArgoCDArgo CD is the most popular GitOps continuous delivery tool for Kubernetes. It continuously monitors Git repositories and automatically syncs application state to match the desired configuration. A CNCF graduated project used by thousands of organizations for deploying to Kubernetes clusters.

Blacksmith head-to-head

FAQ

Which Blacksmith alternative is listed first?

Woodpecker CI is first in the editor-selected list of 5 Blacksmith alternatives. The stored order is editorial; review scores do not determine membership or position.

Are there open-source Blacksmith alternatives?

Yes — Woodpecker CI, Atlantis, Dagger Container Use, and more are open source.

Are there free Blacksmith alternatives?

Yes — Woodpecker CI, Aviator, Argos CI offer a free plan or free tier.