Node File Router vs Prim+RPC

File-router focuses on routing, not RPC function calls.

Side by side

What it is: Node File Router:Node File Router lets you define a Node.js API with file-based routes, similar to Next.js or Nuxt.; Prim+RPC:Prim+RPC provides type-safe, transport-agnostic RPC/IPC for JavaScript environments.
Best for: Node File Router:File-based routing for Node APIs; Prim+RPC:Transport-agnostic JavaScript RPC
Who it’s for: Node File Router:Node.js developers who want simple, framework-agnostic routing.; Prim+RPC:JavaScript developers needing simple client-server function calls.
Pricing: Node File Router:Open source; Prim+RPC:Open source
Open source: Node File Router:Yes, 207 GitHub stars; Prim+RPC:Yes, 110 GitHub stars
Works with: Node File Router:Node.js, Bun, Express.js, WebSockets, ES modules, TypeScript; Prim+RPC:Node, Deno, Bun, Express, Fastify, Hono, Next.js, Remix
DevHunt upvotes: Node File Router:123; Prim+RPC:9
Launched on DevHunt: Node File Router:Jan 2023; Prim+RPC:Jan 2023

Technology Agnostic. Works with pure Node.js, Bun, Express.js, WebSockets and more.
Works Everywhere. Supports CommonJS, ES modules and provides TypeScript out of the box.
Powerful Routing. Dynamic routes with wildcard parameters using a Next.js-like interface.
Zero Dependencies. No external packages and 100% test coverage.

Type-safe calls. Full TypeScript or JSDoc typings are generated at runtime.
Zero client generation. Functions are called directly without a build step.
Transport agnostic. Works over HTTP, WebSocket, Web Workers, processes, etc.
Framework agnostic. Integrates with Express, Fastify, Hono, Next.js, Deno, Bun and more.
File & Blob support. Upload and download files without extra handling.
Batching. Multiple RPC calls can be combined into a single request.
Custom serialization. Plug-in JSON handlers for Dates, RegExps, Errors, etc.
Error propagation. Server errors are thrown directly on the client.

Based on each tool's website and DevHunt data. Details may change; check the official sites.