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Comparison

Fly.io vs Tau

Compare categories, runtimes, pricing, regions, infrastructure, and platform trade-offs.

Comparison space

Updated

Comparison facts

Platform

Hosting model
Managed
Supported
Managed
Not supported
Self-Hosted
Not supported
Self-Hosted
Supported
Open source / license
—
Open source / license
bsd-3-clause
Services
CDN
Not supported
CDN
Supported
Compute
Supported
Compute
Not supported
Functions
Not supported
Functions
Supported
GPU Compute
Supported
GPU Compute
Not supported
Key-Value Store
Not supported
Key-Value Store
Supported
Managed Databases
Supported
Managed Databases
Not supported
Object Storage
Supported
Object Storage
Supported
Queues
Not supported
Queues
Supported
Workloads
APIs
Supported
APIs
Supported
Backend Services
Supported
Backend Services
Supported
Background Workers
Supported
Background Workers
Supported
Real-Time Applications
Not supported
Real-Time Applications
Supported
Scheduled Jobs
Not supported
Scheduled Jobs
Supported
Static Sites
Not supported
Static Sites
Supported
Web Applications
Supported
Web Applications
Supported
Capabilities
Compute Autoscaling
Supported
Compute Autoscaling
Not recorded
Scale to Zero
Supported
Scale to Zero
Not recorded
Zero-Downtime Application Deployments
Supported
Zero-Downtime Application Deployments
Not recorded

Development & Execution

Deployment & packaging
Bare metal / VM
Not supported
Bare metal / VM
Supported
Docker / OCI
Supported
Docker / OCI
Not supported
Kubernetes
Supported
Kubernetes
Not supported
Local Emulator
Not supported
Local Emulator
Supported
Serverless (Managed Runtime)
Not supported
Serverless (Managed Runtime)
Supported
Runtimes
.NET Runtime
Supported
.NET Runtime
Not supported
Custom Runtime
Supported
Custom Runtime
Not supported
Deno
Supported
Deno
Not supported
JVM
Supported
JVM
Not supported
Node.js
Supported
Node.js
Not supported
WebAssembly
Not supported
WebAssembly
Supported
Languages
C#
Supported
C#
Not supported
Crystal
Supported
Crystal
Not supported
Elixir
Supported
Elixir
Not supported
Go
Supported
Go
Supported
Java
Supported
Java
Not supported
JavaScript
Supported
JavaScript
Supported
PHP
Supported
PHP
Not supported
Python
Supported
Python
Supported
Ruby
Supported
Ruby
Not supported
Rust
Supported
Rust
Supported
TypeScript
Supported
TypeScript
Supported
Frameworks
Django
Supported
Django
Unknown
Express.js
Supported
Express.js
Unknown
Fastify
Supported
Fastify
Unknown
Laravel
Supported
Laravel
Unknown
Next.js
Supported
Next.js
Unknown
Ruby on Rails
Supported
Ruby on Rails
Unknown
Spring Boot
Supported
Spring Boot
Unknown
SvelteKit
Supported
SvelteKit
Unknown

Pricing

Billing basis
Instance based Fly Machines
Plan based Tau Software
Software charge
$0.0028 / hour shared-cpu-1x
Tau is free to self-host; users fund compute, storage, networking, monitoring, backups, and operations.
Starting price
$0.0028 / hour shared-cpu-1x
Unknown
Free entry / commitment
Started Machines are billed per second for provisioned compute and memory stopped Machines retain separately billed root file systems.
Free plan Available in public plans

Infrastructure & Availability

Infrastructure provider
  • Own Network
  • Amazon Web Services
  • Microsoft Azure
  • Google Cloud Platform
  • DigitalOcean
  • Customer-operated bare-metal, virtual-machine, sovereign-cloud, and edge infrastructure
Supported providers
  • Own Network
  • Amazon Web Services
  • Microsoft Azure
  • Google Cloud Platform
  • DigitalOcean
  • Customer-operated bare-metal, virtual-machine, sovereign-cloud, and edge infrastructure
Placement control
  • Regional
Unknown

Security & Compliance

Access & identity
Access Control
Organization roles and scoped tokens Fly.io organizations and applications
Auth service authentication, authorization, and repository-to-project mapping Tau self-hosted platform services
Single Sign-On
Required Google or GitHub organization sign-in Fly.io organizations
Unknown
Encryption & secrets
Secrets Management
Encrypted application secrets Fly.io applications
Deployment keys, webhook secrets, and X.509 certificates Tau Auth service
Encryption at Rest
LUKS-encrypted volumes and managed database storage Persistent Fly.io storage
Unknown
Encryption in Transit
Unknown
Automatic Let's Encrypt certificates and authenticated encrypted node traffic Tau platform; deployment infrastructure remains operator-owned
Network isolation & protection
Network Isolation
Firecracker microVMs with no shared guest kernel Fly Machines
Unknown
Private Networking
Per-organization 6PN WireGuard network Applications are private unless explicitly exposed
Unknown
Assurances & programs
HIPAA
Eligible use Signed BAA and $99/month compliance package required; customer safeguards apply
Unknown
SOC Reports
SOC 2 Type II Fly.io managed platform
Unknown