Updated October 2026
Best infrastructure automation tools 2026: 29 ranked by the Infrastructure Automation Ledger
The best infrastructure automation tools in 2026 by Ledger Index are Spacelift (69), Ansible Automation Platform (68.6), Terraform (66.5), out of 29 scored in the Infrastructure Automation Ledger (28 ranked). Scores come from public release records only; no vendor pays for placement.
Dependable builder
Integrated stack with an AI-led roadmap
Dependable builder
Full ranking
| # | Product | Index /100 | Capability /100 | Credibility /25 | Commercial risk /25 | Lock-in /25 | User rating |
|---|---|---|---|---|---|---|---|
| 1 | Spacelift Dependable builder | 69 | 70.3 | 19 | 12 | 7 | none yet |
| 2 | Ansible Automation Platform Integrated stack with an AI-led roadmap | 68.6 | 76.6 | 16.5 | 12 | 8.5 | none yet |
| 3 | Terraform Dependable builder | 66.5 | 68.7 | 18 | 14.5 | 5 | none yet |
| 4 | CloudFormation Dependable builder | 62 | 62.3 | 17.5 | 4 | 17 | none yet |
| 5 | Pulumi Real innovator | 61.2 | 60.7 | 17 | 11 | 8 | none yet |
| 6 | Ansible Dependable engine on a published calendar | 60.4 | 58.6 | 19.5 | n/a | 4.5 | none yet |
| 7 | Bicep Dependable builder | 59.6 | 55.8 | 17.5 | 3 | 15 | none yet |
| 8 | Harness IaCM Dependable builder | 59.3 | 64.3 | 18.5 | 13 | 9.5 | none yet |
| 9 | env zero Dependable builder | 58.8 | 60.3 | 15.5 | 11.5 | 8.5 | none yet |
| 10 | Crossplane Dependable builder | 57.2 | 50.1 | 20 | 9 | 11.5 | none yet |
| 11 | Puppet Gated builds, portfolio pull | 57 | 67.2 | 14 | 17.5 | 9 | none yet |
| 12 | Scalr Dependable builder | 56.7 | 54.6 | 15 | 7.5 | 8 | none yet |
| 13 | OpenTofu Dependable builder | 55.8 | 49.5 | 20 | 7.5 | 4 | none yet |
| 14 | Ironic Dependable builder | 55.7 | 43.6 | 20.5 | 6 | 7.5 | none yet |
| 15 | Terragrunt Dependable builder | 54.3 | 45.5 | 18.5 | 8 | 5 | none yet |
| 16 | CFEngine Dependable builder, narrow field | 54.1 | 50.4 | 19 | 7 | 11 | none yet |
| 17 | Semaphore UI Founder-led orchestration layer, fast cadence | 53.3 | 41.3 | 17 | 9 | 3 | none yet |
| 18 | Satellite Integrated stack | 52.5 | 53.6 | 16.5 | 12 | 10 | none yet |
| 19 | Foreman Dependable builder | 52 | 53.4 | 16 | n/a | 8 | none yet |
| 20 | OpenVox Community continuation at upstream pace | 49.5 | 52.4 | 16.5 | 10.5 | 9 | none yet |
| 21 | Chef Platform consolidator, forced moves | 49.1 | 60.4 | 14 | 17 | 11 | none yet |
| 22 | Juju Slow follower | 47.8 | 49.6 | 14.5 | 6.5 | 12.5 | none yet |
| 23 | MAAS Dependable builder | 47.6 | 41.7 | 15 | 9 | 8 | none yet |
| 24 | Salt Capable core, shrinking under a portfolio owner | 47.5 | 60 | 12.5 | 15.5 | 8 | none yet |
| 25 | Metal3 Dependable builder | 43.9 | 34.3 | 15.5 | 7.5 | 8 | none yet |
| 26 | Digger Slow follower | 42.8 | 34.1 | 14.5 | 11 | 4.5 | none yet |
| 27 | Cinc Volunteer rebuild, now a fork | 41.6 | 45.4 | 13.5 | 14.5 | 10 | none yet |
| 28 | Tinkerbell Slow follower | 36.9 | 29.7 | 12 | 11 | 9.5 | none yet |
| Not ranked: these fail one of the Ledger's inclusion tests, so their scores are for reference only. | |||||||
| Atlantis Dependable builder | 46 | 34.7 | 15.5 | 11 | 2.5 | none yet | |
Risk and lock-in: lower is better. Source: Infrastructure Automation Ledger 2026, methodology.
Questions
What is the best automation tool in 2026?
Spacelift has the highest Ledger Index (69 out of 100) in the Infrastructure Automation Ledger, followed by Ansible Automation Platform (68.6) and Terraform (66.5). The best choice for you depends on your size, skills and budget.
How are the scores calculated?
The Ledger Index adds capability (what shipped, by domain and year), release credibility, commercial risk, technical lock-in and AI delivery, all from public release notes, roadmaps and pricing pages. The methodology page explains every score.
Can vendors pay to be listed or ranked?
No. Mr.PlanB takes no vendor money for listings, rankings or reviews, and the scores use no vendor briefings.
Who writes the user reviews?
Anyone who has used the product. Reviews are anonymous, need no account, and are checked by a person before they appear. Adverts, spam and personal attacks are removed.