Fly.io vs fortrabbit

Q: Is Fly.io or fortrabbit free?

Fly.io has a free plan; paid plans start at $29/month (Support Standard). fortrabbit has a free plan and paid plans.

Q: Do Fly.io and fortrabbit integrate with the same tools?

Partly. Both list GitHub. Fly.io also lists OpenRouter, Slack and any HTTP API; fortrabbit also lists Composer, MySQL, SSH, SFTP and 9 more.

Fly.io runs full-stack apps close to users with edge deployment; fortrabbit runs PHP apps on AWS with regional data centers.

Short answer: Pick Fly.io if you want hardware-isolated edge VMs for agents; pick fortrabbit if you want managed PHP hosting with built-in scaling. Fly.io has a free plan, paid from $29/month; fortrabbit has a free plan.

Fly.ioRun full-stack apps close to your users

fortrabbitA different kind of hosting

Which to pick

Pick Fly.io if you want…

Hardware-isolated edge VMs for agents
Edge-focused full-stack deployment
Integrations with OpenRouter, Slack or any HTTP API (on Fly.io's list, not fortrabbit's)

Pick fortrabbit if you want…

Managed PHP hosting with built-in scaling
Integrations with Composer, MySQL or SSH (on fortrabbit's list, not Fly.io's)

Side by side

What it is: Fly.io:Fly.io provides hardware-isolated Linux VMs (Sprites and Machines) that run close to users for AI agents and full-stack apps.; fortrabbit:fortrabbit is a managed PHP PaaS offering automated deployments, scaling and team collaboration.
Best for: Fly.io:Hardware-isolated edge VMs for agents; fortrabbit:Managed PHP hosting with built-in scaling
Who it’s for: Fly.io:Developers building AI agents, personal assistants, or apps that need low-latency edge compute.; fortrabbit:PHP developers, agencies and freelancers building web apps with Git and Composer.
Pricing: Fly.io:Freemium; fortrabbit:Freemium
Starting price: Fly.io:$29/month (Support Standard); fortrabbit:—
Free plan or trial: Fly.io:—; fortrabbit:Free trial
Plans: Fly.io:Machines shared-cpu-1x $0.0027 per hour · Machines performance-2x $0.0861 per hour · Sprites compute $0.07 / CPU-hour · Support Standard $29 per month · Support Premium $199 per month; fortrabbit:—
Works with: Fly.io:OpenRouter, GitHub, Slack, any HTTP API; fortrabbit:GitHub, Composer, MySQL, SSH, SFTP, MCP server, CLI, Public API

Fly.io features

Sprites. Sleep-aware VMs that checkpoint filesystem and services, allowing instant wake-up and rollback.
Machines. Fast-booting, hardware-isolated VMs that scale to tens of thousands of users.
Block Device Storage. Object-storage backed block device with automatic checkpointing and unlimited scaling.
Connectors. Configure a credential once and share it across all Sprites with granular permissions and auto-rotation.
Zero-Management Disk. Disk grows automatically up to 100 GB per Sprite, billed only for used bytes.
Global Edge Network. Deploy in 18+ regions with <1 s boot time and 99.9 % SLA.

fortrabbit features

One-click GitHub deployments. Connect a GitHub repo, detect the framework and deploy with a git push.
Staging environments. Create isolated environments with their own domain, branch and resources.
Automatic SSL certificates. TLS certificates are provisioned and renewed automatically for each environment.
SSH & SFTP access. Jailed shell access with SSH keys and SFTP for file sync and inspection.
MCP server & Agent skills. API and CLI allow AI agents or scripts to create environments, sync files and read logs.
MySQL & backups. Managed MySQL databases with automated backups and restore options.
Autoscaling. Storage, traffic and MySQL scale up/down automatically based on usage.
Team collaboration. Invite teammates, share payment methods and hand over apps to clients.