SafeLine

I recommend SafeLine because it fills a critical gap for teams that need strong web application security without the cost or complexity of traditional WAF solutions. It’s free and self-hosted, so you keep full control over your infrastructure and data while avoiding recurring license fees.

From a protection standpoint, it covers the most common and dangerous attack vectors out of the box: SQL injection, cross-site scripting (XSS), denial-of-service (DoS), and bot abuse. This makes it suitable not just for simple sites, but also for more complex applications and APIs that are frequently targeted.

SafeLine’s IP-based rate limiting and web access control list (ACL) are particularly valuable for API endpoints. They allow you to throttle abusive clients, block or allow specific IP ranges, and enforce access policies at the edge before traffic reaches your application. This reduces load on your backend and helps prevent abuse-driven outages.

An additional differentiator is the HTML/JS encryption feature, which raises the bar for casual code scraping and tampering by making it harder for attackers to directly inspect or modify client-side assets.

Overall, SafeLine offers a practical balance of security, control, and cost. For anyone exposing web services to the internet—especially developers and small teams who can’t justify expensive enterprise WAFs—it provides a comprehensive, manageable way to harden applications against common web threats.