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Side-by-side comparison

Pick up to four tools and compare adoption, momentum and maintenance at a glance. The crown marks the leader in each row.

Modern open-source API reference and client for OpenAPI, increasingly replacing Swagger UI.

End-to-end type-safe APIs for TypeScript monorepos without schemas or code generation.

High-performance RPC framework over HTTP/2 with Protocol Buffers; the standard for service-to-service calls.

Google's language-neutral binary serialization format and IDL behind gRPC.

Head to head

Metric	Scalar	tRPC	gRPC	Protocol Buffers
Stars	16.4k	40.8k	45.4k	72.2k
Weekly downloads	2.3M	6.8M	n/a	n/a
Download growth	+168%	+40%	n/a	n/a
Popularity score	77/100	84/100	85/100	89/100
Forks	971	1.7k	11.3k	16.4k
Open issues	52	124	1.4k	418
Last commit	today	3d ago	1d ago	today
Latest version	1.78.0	11.28.0	n/a	n/a
License	MIT	MIT	Apache-2.0	n/a
First released	2023	2020	2014	2014
Signals	Trending (detected automatically)Rising	None	Popular	Popular
Listed in	Backend › RPC, gRPC & OpenAPI	Frontend › Data Fetching & API Clients Backend › RPC, gRPC & OpenAPI	Backend › RPC, gRPC & OpenAPI	Backend › RPC, gRPC & OpenAPI

Hover for exact values; switch to log scale for tools of very different sizes. Not shown (no comparable download data): gRPC, Protocol Buffers.

Modern open-source API reference and client for OpenAPI, increasingly replacing Swagger UI.

End-to-end type-safe APIs for TypeScript monorepos without schemas or code generation.

High-performance RPC framework over HTTP/2 with Protocol Buffers; the standard for service-to-service calls.

Google's language-neutral binary serialization format and IDL behind gRPC.

Metric	Scalar	tRPC	gRPC	Protocol Buffers
Stars	16.4k	40.8k	45.4k	72.2k
Weekly downloads	2.3M	6.8M	n/a	n/a
Download growth	+168%	+40%	n/a	n/a
Popularity score	77/100	84/100	85/100	89/100
Forks	971	1.7k	11.3k	16.4k
Open issues	52	124	1.4k	418
Last commit	today	3d ago	1d ago	today
Latest version	1.78.0	11.28.0	n/a	n/a
License	MIT	MIT	Apache-2.0	n/a
First released	2023	2020	2014	2014
Signals	Trending (detected automatically)Rising	None	Popular	Popular
Listed in	Backend › RPC, gRPC & OpenAPI	Frontend › Data Fetching & API Clients Backend › RPC, gRPC & OpenAPI	Backend › RPC, gRPC & OpenAPI	Backend › RPC, gRPC & OpenAPI

Hover for exact values; switch to log scale for tools of very different sizes. Not shown (no comparable download data): gRPC, Protocol Buffers.