Compare
Fastgen vs Prim+RPC
Fastgen builds backend UI, whereas Prim+RPC handles RPC communication.
Which to pick
Pick Fastgen if you want…
- Webflow-style backend builder
Pick Prim+RPC if you want…
- Transport-agnostic JavaScript RPC
- Open-source code (doseofted/prim-rpc on GitHub, Apache-2.0 license)
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
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.
Fastgen vs Prim+RPC FAQ
Is Fastgen or Prim+RPC free?+
Fastgen is listed on DevHunt as a paid subscription. Prim+RPC is free and open source.
Is Fastgen or Prim+RPC open source?+
Prim+RPC is open source (doseofted/prim-rpc on GitHub, Apache-2.0 license). DevHunt has no public source repository on record for Fastgen.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.