Infrastructure
The clouds, orchestration and plumbing that turn silicon into something you can rent by the hour.
This is where the money leaks. Nearly every recurring bill a technical team complains about — GPU hours, CI minutes, log ingestion, cluster management — is billed at this layer, and nearly every one of them has a free engine underneath the paid convenience.
29 decisions · 135 verified alternatives · 25 categories
Every decision at this layer
Ranked by how self-sufficient the leading alternative is. The score is a published rubric, not an opinion — see methodology.
MongoDB Atlas → PostgreSQL
The default answer, and JSONB means you may not need a document store.
Free and open source. Managed options exist from every cloud, usually cheaper than Atlas.
Docker Desktop → Podman + Podman Desktop
Fully open-source, daemonless containers with a polished cross-platform GUI.
Free / open-source
Redis → Valkey
The Linux Foundation fork — same Redis, governance that cannot be revoked.
Free and open source. Managed offerings from AWS, Google and others.
Pingdom → Uptime Kuma
The self-hosted monitor that beat the paid ones on features.
Free and open source. One Docker container on a server you already run.
Atlassian Statuspage → Uptime Kuma
The self-hosted monitor that beat the paid ones on features.
Free and open source. One Docker container on a server you already run.
Modal → vLLM
The standard open inference engine — the thing under most serving platforms.
Free and open source. You pay only for the GPUs you rent or own.
Red Hat OpenShift → k3s
Certified Kubernetes in a single small binary — no platform tax.
Free, open-source; optional SUSE Rancher Prime support subscription
Astronomer (Astro) → Apache Airflow
The same engine Astro runs, self-hosted and free.
Free and open source. You pay for the cluster and the people who run it.
HashiCorp Vault → OpenBao
Vault before the licence changed — forked, MPL-2.0, run by a foundation.
Free and open source. You run it on your own infrastructure.
Heroku → Coolify
Self-hosted Heroku — one server, Apache-2.0, everything included.
Free and open source. You pay only for the server. Paid cloud option available.
Replicate → vLLM
The throughput king. OpenAI-compatible, Apache-2.0, built for serious serving.
Free and unlimited. You pay only for the hardware you run it on.
GitHub Actions → Woodpecker CI
A small, container-native CI server you can run on one box.
Free and open source. You pay only for the machine it runs on.
Okta → Keycloak
Apache-2.0 identity, backed by Red Hat, running at enterprise scale.
Free and open source. Red Hat build with commercial support available.
Snowflake → ClickHouse
Analytical queries at a speed that reframes what you thought was slow.
Free and open source. ClickHouse Cloud is a paid managed option.
Sentry → GlitchTip
A lightweight, fully open-source, Sentry-SDK-compatible error tracker.
Free to self-host; optional hosted plans from $0 (1K events/mo) to $250/mo (3M events/mo)
Amazon S3 → MinIO
The S3 API on your own hardware — same calls, no egress bill.
Free and open source. Commercial licence and support available from MinIO Inc.
Locked-Down Consumer Routers → OpenWrt
Open-source Linux firmware for your router.
Free / open-source (flash onto supported hardware)
Firebase → Supabase
Postgres with Firebase's ergonomics — and you can take the database with you.
Free tier for small projects; hosted Pro from about $25/month. Fully self-hostable at no licence cost.
Datadog → Grafana + Prometheus
The open-source observability standard.
Free / self-host
Dropbox → Nextcloud
A full self-hosted cloud: files, sharing, and more.
Free / open-source (self-host); paid support/hosting optional
Google Drive → Nextcloud
A full self-hosted cloud: files, sharing, and more.
Free / open-source (self-host); paid support/hosting optional
LaunchDarkly → Unleash
The most complete open feature-flag platform, and it self-hosts properly.
Open-source server free and self-hostable. Hosted and enterprise tiers are paid.
Algolia → Meilisearch
Great search out of the box, on one small server.
Free and open source to self-host. Meilisearch Cloud is paid, from a small monthly tier.
New Relic → SigNoz
An OpenTelemetry-native, single-app APM and observability platform.
Free / self-host; optional managed cloud
Splunk → OpenSearch
The Apache-2.0 search and log-analytics platform (the Elasticsearch fork).
Free / self-host; managed options available from AWS and others
AWS (EC2 compute) → Hetzner Cloud
Two to four times the hardware per dollar, 20 TB of traffic included.
From €5.49/mo excl. IPv4 and VAT (CX23: 2 vCPU / 4 GB, 20 TB EU traffic) since the 15 June 2026 price rise; plans are often marked unavailable for new orders; US locations cost more and include less traffic
Segment → RudderStack
Warehouse-first customer data — and its licence is not what lists claim.
Self-hostable free within ELv2 terms. Cloud tiers are paid, with a free tier.
GoDaddy → Porkbun
Flat, honest domain pricing with free privacy — the community favorite.
~$11/yr for .com — the renewal matches the intro price; free WHOIS privacy and SSL
AWS GPU Instances → RunPod
H100s from about $1.99/hr, running in under a minute.
Per-second billing, no commitment. H100 around $1.99/hr, with cheaper Community Cloud capacity and a pricier Secure Cloud tier. Serverless scales to zero, so idle inference endpoints cost nothing. Verified 2026-07-30.
Categories in this layer
Where this sits in the stack
L2 below · Chips & silicon — The physical accelerators — GPUs, TPUs, custom inference silicon — and the fabs that make them.
L4 above · Models & tooling — The models themselves, plus the gateways, vector stores, frameworks and observability that make them usable.