15 Open-Source Alternatives to Expensive SaaS Tools You Use Daily 💸

You don’t need to pay a subscription for everything. Seriously.

We live in a world dominated by sleek SaaS tools — Webflow for design, Firebase for your backend, Mailchimp for newsletters, and a dozen others you’ve probably signed up for (and forgotten about). They’re easy. They work out of the box. But there’s a catch: you’re renting convenience.

The moment you stop paying, you’re out. And for developers, startups, and bootstrappers trying to cut costs or gain control, that’s a huge red flag.

Luckily, there’s a growing movement of powerful open-source tools ready to replace those SaaS giants — no monthly fees, no vendor lock-in, and full control.

Here are 15 open-source tools that punch well above their weight, letting you build like a boss without breaking the bank.

1. Webstudio

Alternative to: Webflow
Category: Web Builder

A visual builder that doesn’t box you in. Webstudio lets you design pixel-perfect websites while keeping the…