Build and run infrastructure on free tiers. 10 DevOps categories — CI/CD, monitoring, logging, container registries, secrets management, and more. Exact limits, scaling guidance.

AgentDeals › Alternatives › Free DevOps Stack

The Complete Free DevOps Stack

Everything you need to build, deploy, and operate software infrastructure — without spending a dollar. This guide recommends the best free tier for each layer of a DevOps stack — 10 categories from CI/CD pipelines to secrets management — with exact limits pulled from our index of 1,547+ verified developer tools.

Designed for solo developers, small teams, and startups setting up their first production infrastructure. Each recommendation includes alternatives, a "when you'll outgrow it" guide, and stability notes based on our tracking of 554 real pricing changes. The limits on this page were read from vendor pricing pages between 2026-04-19 and 2026-09-06.

$0/month
Total estimated monthly cost for a solo developer or small team
$0 covers the 8 of 10 picks whose free tier our own badge still reads as active. It does not cover GitHub Container Registry (unrated — page states no price), HCP Terraform (at risk).

Stack Overview

Category Recommended Key Limit Stability
🔄 CI/CD Pipeline GitHub Actions Free CI/CD for public repos (unlimited minutes). Private repos: 2,000 min/mo GitHub-hosted runners, 500 MB… active
📊 Monitoring & APM Grafana Cloud Free tier with 10K metric series, 50 GB logs, 50 GB traces, 14-day retention, 3 users active
🟢 Uptime Monitoring BetterStack 10 uptime monitors, 3 GB logs (3-day retention), 100K exceptions/mo, 5K session replays, 30 GB metrics, 1… active
📝 Logging & Log Management Axiom Observability platform — 500 GB ingest/month, 25 GB storage, 30-day retention, 2 datasets, 1 user, 10… active
🚨 Incident Management PagerDuty Incident management — 5 users, 1 on-call schedule, 1 escalation policy, 100 intl phone/SMS… active
📦 Container Registry GitHub Container Registry Container images currently free for both public and private repos (GitHub may change with 1-month notice)… unrated — page states no price
🖥️ Cloud Hosting & PaaS Railway Free plan: $0/month with one-time $5 credit (30-day trial), 1 vCPU, 0.5 GB RAM per service, 0.5 GB volume… active
🏗️ Infrastructure as Code HCP Terraform HashiCorp managed Terraform — enhanced free tier (replacing legacy plan EOL March 31, 2026): 500 managed… at risk
🔐 Secrets Management Doppler Secrets management — up to 3 users, 10 projects, 4 environments per project. CLI, SDKs, and integrations… active
🐛 Error Tracking Sentry Developer tier: 1 user, 5K errors/month, 5M spans/month, 50 session replays, 5GB application logs, 1GB… active

🔄 CI/CD Pipeline

Recommended GitHub Actions Free active

Unlimited minutes for public repos, 2,000 min/month for private repos. Native GitHub integration with 19,000+ marketplace actions. The default CI/CD for most open-source and private projects.

Free CI/CD for public repos (unlimited minutes). Private repos: 2,000 min/mo GitHub-hosted runners, 500 MB artifact storage, 10 GB cache/repo. Self-hosted runners remain free — planned $0.002/min charge was postponed…

Full profile Alternatives Pricing ↗

Also consider:

GitLab CI Free active CircleCI Free active Harness CI Free at risk Buildkite Personal active
When you'll outgrow it: When you exceed 2,000 private-repo minutes/month or need more than 20 concurrent jobs. GitLab CI (400 min/month) is a solid alternative with built-in container registry.
Full comparison guide →

📊 Monitoring & APM

Recommended Grafana Cloud Free active

10K metric series, 50 GB logs, 50 GB traces with 14-day retention. 3 users free. The most generous free observability stack — dashboards, alerting, and tracing in one platform.

Free tier with 10K metric series, 50 GB logs, 50 GB traces, 14-day retention, 3 users

Full profile Alternatives Pricing ↗

Also consider:

New Relic Free active Datadog Free active Sentry Developer active AppSignal Free active
When you'll outgrow it: When you exceed 10K active metric series or need longer retention than 14 days. New Relic offers 100 GB data ingest/month with 1 full platform user — better for single-operator setups.
Full comparison guide →

🟢 Uptime Monitoring

Recommended BetterStack Free active

10 uptime monitors with 3-minute checks, incident management, and status pages. Plus 3 GB logs and 100K exceptions/month. Best all-in-one uptime + incident platform on a free tier.

10 uptime monitors, 3 GB logs (3-day retention), 100K exceptions/mo, 5K session replays, 30 GB metrics, 1 status page, 1 responder

Full profile Alternatives Pricing ↗

Also consider:

UptimeRobot Free active StatusCake Free active Healthchecks.io Free active Cronitor Hacker active
When you'll outgrow it: When you need more than 10 monitors or sub-minute check intervals. UptimeRobot offers 50 monitors free but with 5-minute intervals. Healthchecks.io is ideal for cron job monitoring specifically.
Full comparison guide →

📝 Logging & Log Management

Recommended Axiom Personal active

500 GB ingest/month with 30-day retention — orders of magnitude more than competitors. SQL-compatible queries, dashboards, and alerting. 2 users free.

Observability platform — 500 GB ingest/month, 25 GB storage, 30-day retention, 2 datasets, 1 user, 10 GB-hrs/mo query compute, 256 fields/dataset, 3 monitors, Email/Discord notifiers only

Full profile Alternatives Pricing ↗

Also consider:

Grafana Cloud Free active Highlight.io Free OSS unrated — page states no price Baselime Free unrated — page states no price
When you'll outgrow it: When you need more than 2 users or longer than 30-day retention. Grafana Cloud's 50 GB logs integrate with its metrics and traces — better if you're already using Grafana for monitoring.

🚨 Incident Management

Recommended PagerDuty Free active

Free for up to 5 users with 1 on-call schedule, 1 escalation policy, and 100 integrations. The industry standard for on-call — integrates with everything.

Incident management — 5 users, 1 on-call schedule, 1 escalation policy, 100 intl phone/SMS notifications/month, 700+ integrations, API access

Full profile Alternatives Pricing ↗

Also consider:

incident.io Basic active BetterStack Free active
When you'll outgrow it: When you need more than 1 on-call schedule or more than 5 users. incident.io's free plan includes Slack-native incident workflows. BetterStack bundles uptime monitoring with on-call.
Full comparison guide →

📦 Container Registry

Recommended GitHub Container Registry Free unrated — page states no price

Unlimited public container images, free for public repos. Tight integration with GitHub Actions for CI/CD pipelines. No pull rate limits for authenticated users.

Container images currently free for both public and private repos (GitHub may change with 1-month notice). Non-container packages: 500 MB storage, 1 GB transfer/mo

Full profile Alternatives Pricing ↗

Also consider:

Docker Hub Personal active Quay.io Free unrated — page states no price Amazon ECR Public Always Free unrated — page omits product
When you'll outgrow it: When you need private container images beyond GitHub's included storage. Docker Hub allows 1 free private repo with 200 pulls per 6-hour window. For high-volume pulls, Amazon ECR Public offers 500 GB/month bandwidth.

🖥️ Cloud Hosting & PaaS

Recommended Railway Free active

$5/month Hobby plan with $5 credit included — effectively free for small workloads. 48 GB RAM, 48 vCPU available. Simple Git-based deploys with managed Postgres, Redis, and cron.

Free plan: $0/month with one-time $5 credit (30-day trial), 1 vCPU, 0.5 GB RAM per service, 0.5 GB volume storage, 1 project, 3 services max ($1/month minimum after trial). Hobby plan: $5/month with $5 resource credit…

Full profile Alternatives Pricing ↗

Also consider:

Render Hobby at risk Cloudflare Workers Free active Koyeb Free (Database Only) active Fly.io Legacy Free unrated — not a free offer
When you'll outgrow it: When your workloads exceed the $5 credit. Render's free web services (512 MB RAM, 0.1 CPU) are truly free but spin down on inactivity. Cloudflare Workers offers 100K requests/day for edge compute.
Full comparison guide →

🏗️ Infrastructure as Code

Recommended HCP Terraform Free (Enhanced) at risk

HashiCorp-managed Terraform with enhanced free tier: 500 managed resources, remote state, VCS integration, and run tasks. The standard for multi-cloud infrastructure provisioning.

HashiCorp managed Terraform — enhanced free tier (replacing legacy plan EOL March 31, 2026): 500 managed resources, unlimited users, SSO, policy as code (Sentinel + OPA), unlimited apply cycles. Legacy free plan users…

Full profile Alternatives Pricing ↗

Also consider:

Pulumi Individual active Spacelift Free active Scalr Free at risk
When you'll outgrow it: When you exceed 500 managed resources or need team collaboration features. Pulumi's free Individual plan offers unlimited projects with state management. Spacelift adds policy-as-code and drift detection.

🔐 Secrets Management

Recommended Doppler Free active

Up to 3 users, 10 projects, 4 environments per project. CLI, SDKs, and integrations with all major platforms. The simplest secrets management with automatic rotation and sync.

Secrets management — up to 3 users, 10 projects, 4 environments per project. CLI, SDKs, and integrations included

Full profile Alternatives Pricing ↗

Also consider:

Infisical Free active HashiCorp Vault Community / HCP Free unrated — page unreadable Google Secret Manager Always Free active
When you'll outgrow it: When you exceed 3 users or 10 projects. Infisical offers 5 identities and 3 projects free with K8s operator. HashiCorp Vault (self-hosted) is unlimited but requires ops investment.

🐛 Error Tracking

Recommended Sentry Developer active

Developer tier: 5K errors/month, 5M spans/month, 50 session replays, 5 GB attachments. Real-time error tracking with stack traces, breadcrumbs, and release tracking. 1 user free.

Developer tier: 1 user, 5K errors/month, 5M spans/month, 50 session replays, 5GB application logs, 1GB attachments

Full profile Alternatives Pricing ↗

Also consider:

Highlight.io Free OSS unrated — page states no price BetterStack Free active AppSignal Free active
When you'll outgrow it: When you exceed 5K errors/month or need more than 1 user. Highlight.io offers 500 sessions + 1K errors + 1M logs bundled. BetterStack includes 100K exceptions/month in its free tier.
Full comparison guide →

Stability Notes

Recent pricing changes affecting vendors in this stack. Based on our tracking of 554 deal changes across 1,547+ developer tools.

pricing postponed GitHub Actions: Self-hosted runner per-minute fee ($0.002/min) announced for March 2026 was postponed indefinitely after community backlash. Self-hosted ... Source ↗
pricing restructured Fly.io: Volume snapshots now billed — previously free automatic snapshots now cost $0.08/GB-month Source ↗
pricing restructured Sentry: Switched from performance units to spans-based metrics for error and performance monitoring Source ↗
pricing restructured Docker Hub: Docker Pro +80% ($5→$9/mo), Team +67% ($9→$15/mo). Free tier: Build Cloud minutes removed, Scout repos cut 3→1, private repos limited to ... Source ↗
pricing restructured HCP Terraform: HashiCorp legacy free plan for HCP Terraform ends March 31, 2026. All legacy free plan users auto-migrated to enhanced free tier with dif... Source ↗
limits increased Railway: Railway expanded free tier following $100M Series B. Trial plan now includes $5 in free credits/month, sufficient for small hobby project... Source ↗
limits reduced Render: Free web services now spin down after 15 minutes of inactivity (previously 30 minutes). Cold starts take 30-60 seconds. Free tier remains... Source ↗
free tier removed Papertrail: No free plan, log observability starts at $5/GB/month We hold no source for this record, so it does not set Papertrail's rating.
limits reduced Harness CI: The free plan now has significantly reduced limits. Previously 2,000 build credits/month. The current page details limits for concurrent ... Source ↗
free tier removed Highlight.io: Retracted — this record was our error (2026-09-03). Highlight.io's own page now redirects to launchdarkly.com. Retracted 2026-09-03: no f... Source ↗
limits reduced Infisical: Retracted — this record was our error (2026-09-10). The free tier now offers unlimited projects instead of 3. The number of secret syncs ... Source ↗
limits increased Amazon ECR Public: The free tier for public repositories is now 50 GB/month, up from 500 MB/month. The anonymous data transfer limit is 500 GB/month, and wi... Source ↗

View all 554 pricing changes →

Open-Source Self-Hosted Alternatives

For each category, there's an open-source option you can run on your own hardware — no limits, no vendor lock-in, complete control over your infrastructure.

Category Tool Details
CI/CD Gitea Actions GitHub Actions-compatible CI/CD built into Gitea. Self-host for unlimited minutes and runners.
Monitoring Prometheus + Grafana Industry-standard metrics collection and visualization. Unlimited metrics, retention, and users.
Uptime Uptime Kuma Beautiful self-hosted uptime monitoring. Unlimited monitors, 1-second intervals, notification integrations.
Logging ELK Stack Elasticsearch + Logstash + Kibana. Unlimited log ingestion, powerful full-text search, custom dashboards.
Incident Management Grafana OnCall Open-source on-call management. Integrates with Grafana, Slack, PagerDuty. Unlimited users and schedules.
Container Registry Harbor CNCF graduated container registry. RBAC, vulnerability scanning, image signing, replication. Unlimited storage.
IaC OpenTofu Open-source Terraform fork (MPL 2.0). Drop-in compatible, community-driven, no vendor lock-in.
Secrets HashiCorp Vault (OSS) Self-hosted secrets management. Dynamic secrets, encryption as a service, identity-based access.

When You'll Outgrow Free Tiers

Most solo developers and small teams can run their entire DevOps stack on free tiers. Here's what typically hits limits first:

  1. CI/CD build minutes (GitHub Actions 2,000 min/month) — large test suites and frequent deploys burn through minutes fast
  2. Monitoring metric series (Grafana Cloud 10K) — microservice architectures with many custom metrics
  3. Log retention (Axiom 30 days) — compliance requirements or debugging long-running issues need longer retention
  4. Error volume (Sentry 5K/month) — high-traffic applications with noisy error reporting
  5. User seats (PagerDuty 5 users) — growing teams that need shared on-call rotations

The good news: the open-source alternatives above have no limits. Gitea Actions + Prometheus + Grafana + ELK Stack + Uptime Kuma gives you a complete self-hosted DevOps stack at zero ongoing cost.

Need application infrastructure too? See our Free Startup Stack for databases, auth, and email. Building AI? Check the Free AI/ML Stack. Or search our full index of 1,547+ developer deals.

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