@fastify/rate-limit is a free API security solution. Wallarm API Security is a commercial API security solution by Wallarm. Features, integrations, deployment and the company behind each one, side by side.
What our shortlists say about the one we picked.
Best for: Teams wanting inline API blocking without specifications
Wallarm earns its place because it can start blocking before your APIs are documented, which helps when your specs lag behind the code. It runs hybrid, so you can put the filtering where your traffic is. Before you choose it, test its blocking modes on your busiest APIs, because a wrong block there lands on real users.
From Best API Security Solutions for Business, Fall 2026
Reviewed by Nika (Nikoloz) Kokhreidze.
A low overhead rate limiter for your routes
Inline API discovery and protection platform blocking attacks, abuse, and ATO.
See more solutions in this category, or build a security stack from your picks.
Based on what each listing shows: deployment, company size, price and open source.
@fastify/rate-limit fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.
Wallarm API Security fits if you need both cloud and on-premises options.
Common questions when comparing @fastify/rate-limit vs Wallarm API Security for API security.
@fastify/rate-limit: A low overhead rate limiter for your routes.
Wallarm API Security: Inline API discovery and protection platform blocking attacks, abuse, and ATO, built by Wallarm.
The table above shows where their features, integrations, deployment and company size fit differ.
@fastify/rate-limit is open-source with 588 GitHub stars. Wallarm API Security is made by Wallarm. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. @fastify/rate-limit and Wallarm API Security are both API Security products. Key differences: @fastify/rate-limit is Free while Wallarm API Security is Commercial, @fastify/rate-limit is open-source. Use the table above to see where features, deployment and company size fit differ.
Need the answer fast? Best API Security Solutions for Business picks Akamai API Security, Salt Security Salt Collect, Cloudflare API Shield and 4 more.See the shortlist
