Comparison

Runatlantis (Atlantis) vs Spacelift

Runatlantis (Atlantis) and Spacelift both land on Depends.

Runatlantis (Atlantis)

Depends

Confidence: Medium

Great fit if you have 3+ engineers collaborating on Terraform via pull requests and someone to operate a server.

Depends

Confidence: Medium

Buy if you're a DevOps or platform team orchestrating Terraform, OpenTofu, and Ansible at scale with governance needs.

Runatlantis (Atlantis) versus Spacelift
Compare	Runatlantis (Atlantis)	Spacelift
Verdict	Depends	Depends
Best for	Teams of 3+ engineers on Terraform	Platform teams running multi-tool IaC
Who it's not for	Solo developers . running terraform plan locally is enough	Solo devs running terraform apply locally
Privacy	Active advisory stream: auth bypass, path traversal (CVSS 8.1), and info exposure fixed across 2025-2026 releases . patch promptly.^⁸	No known public vulnerabilities found in the sources reviewed.
Support quality	Guess: community GitHub support, no SLA	No support evidence found in sources.
Public sentiment	Users on Reddit actively champion Atlantis for Terraform PR automation, though some hesitate about self-hosting responsibilities.^⁵	Users on Reddit and review sites generally praise Spacelift's multi-tool orchestration and ease of management, often preferring it over Terraform Cloud, though independent review volume remains small.¹⁶
Biggest gotcha	Four public security advisories in 2025-2026; track releases and patch fast	Starter tier starts at $399/month . steep for small teams.¹³