Host your SaaS apps for less.
.NET, Java, PHP and Python, each in its own container. Your own subdomain, PostgreSQL, sign-in and security tools included.
| Name | Runtime | Address | Status |
|---|---|---|---|
| shop-api | .NET 8 | shop-api.systemi.in | Running |
| crm | Python | crm.systemi.in | Deploying |
| blog | PHP 8.3 | blog.systemi.in | Sleeping |
crm › pip install -r requirements.txt
crm › database crm_db ready (PostgreSQL 18)
✓ live at https://crm.systemi.in · 41 s
Your code in a real container. The rest is done for you.
Bring a zip or a git repo. We build it, give it an address, a database and the safety rails.
Any language
.NET, Java, PHP, Python or a static site. One base image per language, kept patched.
A real container
Your own process, memory and disk. Not a shared PHP folder.
PostgreSQL + DB API
A database per app, a table editor in the browser and a ready REST API.
Your own subdomain
your-app.systemi.in with HTTPS from the first deploy.
Sign-in built in
Email and social sign-in for your users without writing it yourself.
Rate limits + firewall
Bot and abuse protection in front of every app, on by default.
Live in three steps
Sign up
Email or Google. No card, no trial clock.
Upload a zip or connect git
Pick the runtime, add env vars, tick "create a database".
You're live
At your-app.systemi.in. Push again to redeploy.
From the articles
What apps really use and how fast they start, measured.
How much memory does a PostgreSQL connection use? Postgres 18, 1 to 300 connections, measured
We opened up to 300 connections to PostgreSQL 18 in a container: 1.56 MiB each when idle, 3.4 to 3.8 MiB once they have read 100 tables or prepared statements. 64 busy connections got a 256 MB container killed with every connection in it; 200 clients through PgBouncer used 132 MiB instead of 715 MiB. The numbers, the setup and how to size a pool.
Cold starts measured: how long Python, PHP, Java, Spring Boot and .NET take to answer the first request
We timed docker run to the first HTTP 200 for the same hello-world app 72 times. PHP and plain Java answer in about a third of a second, .NET and FastAPI in 0.6 to 0.7 s, Spring Boot in 2.1 s. A CDS archive cut Spring Boot to 1.17 s; ReadyToRun did nothing for .NET. Memory limits didn't change start times.
How much memory does a web app need? Idle memory for PHP, Python, Java, Spring Boot and .NET, measured
We ran the same hello-world JSON endpoint in eight containers and read docker stats after 50 requests: 6.1 MiB for nginx, 12.8 MiB for PHP, 27 to 32 MiB for .NET, Python and plain Java, and 164 MiB for Spring Boot, which drops to 114 MiB under a 256 MB limit. The numbers, the setup and what they mean for sizing a plan.
Your next app could be live today.
Start small. Upgrade only when it grows.