head to head · open source
grpc-gateway vs open-connector
grpc-gateway has 20,008 GitHub stars, 2,413 forks, 149 open issues and last shipped yesterday. open-connector has 6,170 stars, 588 forks, 0 open issues and last shipped yesterday. grpc-gateway leads on adoption by 224% (20,008 vs 6,170 stars). grpc-gateway is written in Go under BSD-3-Clause; open-connector is written in TypeScript under a custom or non-standard licence. grpc-gateway has attracted 12% as many forks as stars, open-connector 10%. open-connector was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| grpc-gateway | open-connector | |
|---|---|---|
| GitHub stars | ★ 20K | ★ 6.2K |
| License | BSD-3-Clause | Custom / other |
| Written in | Go | TypeScript |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 2.4K | ⑂ 588 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick grpc-gateway if
- You weight community size — 20K stars and counting
- You want the BSD-3-Clause license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick open-connector if
- You want the open-connector feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and open-connector fits your workflow better
About grpc-gateway
gRPC Gateway gRPC to JSON proxy generator following the gRPC HTTP spec About The gRPC Gateway is a plugin of the Google protocol buffers compiler protoc. It reads protobuf service definitions and generates a reverse proxy server which translates a RESTful HTTP API into gRPC. This server is generated according to the google.api.http annotations in your service definitions. This helps you provide your APIs in both gRPC and RESTful style at the same time. Docs You can read our docs at: Testimonials We use the gRPC Gateway to serve millions of API requests per day, and have been since 2018 and through all of that…
read the full grpc-gateway overview →
About open-connector
English 简体中文 繁體中文 日本語 한국어 Русский Français Español OpenConnector is an open source connector gateway for AI agents and an alternative to Pipedream/Composio. Connect user app accounts once, then expose a shared catalog of 1,000+ providers and 10,000+ prebuilt Actions to agents and applications. Managed OAuth and hosted runtime, ready to use. No deployment or OAuth app setup. Run locally or on your own infrastructure with Docker or Node.js. You manage storage and OAuth apps. Cloudflare , Fly.io , RepoCloud , nibrun , and more. 🚀 OOMOL Hosted Self host More platforms Use the Connector SDK from app code, oo CLI as…
read the full open-connector overview →
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Frequently asked questions
Is grpc-gateway or open-connector more popular?
grpc-gateway has 20,008 GitHub stars and open-connector has 6,170. grpc-gateway has the larger community by that measure.
Are grpc-gateway and open-connector free?
Both are open source. grpc-gateway is licensed under BSD-3-Clause, and open-connector has no licence declared in this registry. Both are free to self-host.
What is the difference between grpc-gateway and open-connector?
grpc-gateway is written in Go and open-connector in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, grpc-gateway or open-connector?
Choose grpc-gateway if you want the larger community (20,008 stars) or its BSD-3-Clause licence terms. Choose open-connector if its feature set, stack or Custom / other licence fits better. Both are self-hostable.