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Fastgen vs Prim+RPC

Fastgen builds backend UI, whereas Prim+RPC handles RPC communication.

Side by side

What it is
Fastgen:Webflow for the Backend
Prim+RPC:Prim+RPC provides type-safe, transport-agnostic RPC/IPC for JavaScript environments.
Best for
Fastgen:Webflow-style backend builder
Prim+RPC:Transport-agnostic JavaScript RPC
Who it’s for
Fastgen:—
Prim+RPC:JavaScript developers needing simple client-server function calls.
Pricing
Fastgen:Subscription
Prim+RPC:Open source
Open source
Fastgen:—
Prim+RPC:Yes, 110 GitHub stars
Works with
Fastgen:—
Prim+RPC:Node, Deno, Bun, Express, Fastify, Hono, Next.js, Remix
DevHunt upvotes
Fastgen:95
Prim+RPC:9
Launched on DevHunt
Fastgen:Jan 2023
Prim+RPC:Jan 2023

Fastgen features

Webflow for the Backend

Prim+RPC features

  • 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.