How many runtimes does Square Cloud support?

Currently 11 runtimes : Node.js, TypeScript, Python, Java, Rust, Ruby, PHP, Go, .NET, Elixir, and static sites with Nginx. Each runs in an isolated, hardened container.

How do I pick a runtime version?

Use the VERSION= field in squarecloud.app . Runtimes like Node.js and Python have two tracks: latest (cutting edge) and recommended (production-stable). Others have a single version.

Can I switch runtimes later?

Yes. Upload a new ZIP with the appropriate runtime and Square detects it automatically. We recommend planning your runtime before deploy to avoid rework.

What's the minimum memory to run an app?

256 MB for background apps (no subdomain) or 512 MB for apps with a *.squareweb.app subdomain. Maximum per app: 32 GB.

Host any language on Square Cloud

11 production-ready runtimes. Isolated containers, smart auto-restart, and ZIP deploy — no server to manage.

Get started See plans

Supported runtimes

Pick your language and ship to production in minutes.

Node.js

Current version · 24

TypeScript

Current version · 24

Python

Current version · 3.13

Java

Current version · 25

Rust

Current version · 1.95

Ruby

Current version · 4

PHP

Current version · 8.5

Go

Current version · 1.26

.NET

Current version · 10

Elixir

Current version · 1.19

Static

SPAs, landings, docs

Quick comparison

Version, identifier, and focus of each runtime.

Runtime	Latest	Recommended	Identifier	Focus
Node.js	26	24	nodejs	Bots, APIs, full-stack
TypeScript	26	24	typescript	Typed APIs, SaaS
Python	3.14	3.13	python	Bots, AI, scrapers, APIs
Java	25	25	java	Spring, Quarkus, Lavalink
Rust	1.95	1.95	rust	Performance-critical workloads
Ruby	4	4	ruby	Rails, Sinatra
PHP	8.5	8.5	php	Laravel, dynamic sites
Go	1.26	1.26	go	Microservices, concurrency
.NET	10	10	dotnet	ASP.NET Core, games
Elixir	1.19	1.19	elixir	Phoenix, OTP, real-time
Static	—	—	static	SPAs, landings, docs

Frequently asked questions about runtimes

How to pick, version, and configure your runtime on Square Cloud.

Ready to scale your project?

Join hundreds of developers and companies that chose Square Cloud as their infrastructure partner.

Start now on Square Cloud

Predictable pricingNo billing surprisesDeploy in secondsHigh availabilityScale with stability24/7 monitoringSSL and security includedDedicated infrastructure

Host any language on Square Cloud

11 production-ready runtimes. Isolated containers, smart auto-restart, and ZIP deploy — no server to manage.

Get started See plans

Supported runtimes

Pick your language and ship to production in minutes.

Node.js

Current version · 24

TypeScript

Current version · 24

Python

Current version · 3.13

Java

Current version · 25

Rust

Current version · 1.95

Ruby

Current version · 4

PHP

Current version · 8.5

Go

Current version · 1.26

.NET

Current version · 10

Elixir

Current version · 1.19

Static

SPAs, landings, docs

Quick comparison

Version, identifier, and focus of each runtime.

Runtime	Latest	Recommended	Identifier	Focus
Node.js	26	24	nodejs	Bots, APIs, full-stack
TypeScript	26	24	typescript	Typed APIs, SaaS
Python	3.14	3.13	python	Bots, AI, scrapers, APIs
Java	25	25	java	Spring, Quarkus, Lavalink
Rust	1.95	1.95	rust	Performance-critical workloads
Ruby	4	4	ruby	Rails, Sinatra
PHP	8.5	8.5	php	Laravel, dynamic sites
Go	1.26	1.26	go	Microservices, concurrency
.NET	10	10	dotnet	ASP.NET Core, games
Elixir	1.19	1.19	elixir	Phoenix, OTP, real-time
Static	—	—	static	SPAs, landings, docs

Frequently asked questions about runtimes

How to pick, version, and configure your runtime on Square Cloud.

Ready to scale your project?

Join hundreds of developers and companies that chose Square Cloud as their infrastructure partner.

Start now on Square Cloud

Predictable pricingNo billing surprisesDeploy in secondsHigh availabilityScale with stability24/7 monitoringSSL and security includedDedicated infrastructure