Dev tools · alternatives · 2026
24 alternatives to Protoman
An open source API client for protobuf messages
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Protoman launched in 2020; newer entries below may have overtaken it.
- 1
Proto Client▲57Read proto files and send gRPC requests though an easy GUI
2022 · apps.apple.com · its alternatives →
- 2
A Google Protocol Buffers (Protobuf) payload decoder/analyzer - sandermvanvliet/ProtobufDecoder
2021 · github.com · its alternatives →
- 3
protoCURL is cURL for Protobuf: The command-line tool for interacting with Protobuf over HTTP REST endpoints using human-readable text formats - qaware/protocurl
2023 · github.com · its alternatives →
- 4
Proto Actor - Ultra fast distributed actors for Go, C# and Java/Kotlin - asynkron/protoactor-go
2016 · github.com · its alternatives →
- 5
Build, test, and document your APIs faster
2016 · postman.com · its alternatives →
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Postman▲182Postman is a powerful HTTP client to test REST API
2014 · postman.com · its alternatives →
- 7
Protome▲95Gather feedback on prototypes, designs, mockups easily.
2023 · protome.app · its alternatives →
- 8
Bruno ▲457Bruno is the Git-native API client for REST, GraphQL, gRPC and Websocket. A local and open-source solution to Postman. Fast, developer-first, and no cloud syncing.
2025 · usebruno.com · its alternatives →
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- 10CN
2013 · kentonv.github.com · its alternatives →
- 11
Prototyp▲115Free tool based on Framer.js to create awesome interactions
2016 · bcgame-hindi.in.net · its alternatives →
- 12
Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman 👨🏽🚀 - apideck-libraries/portman
2021 · github.com · its alternatives →
- 13
Fern▲260We built the world’s first generated, idiomatic gRPC and REST SDK. If you have public gRPC and REST endpoints, Fern is the SDK provider for you.
2025 · buildwithfern.com · its alternatives →
- 14
Network protocol emulator and testing tool
2017 · vprotostack.com · its alternatives →
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Why I built Skir: https://medium.com/@gepheum/i-spent-15-years-with-protobuf-t... Quick start: npx skir init All the config lives in one YML file. Website: https://skir.build GitHub: https://github.com/gepheum/skir Would love feedback especially from teams running mixed-language stacks.
Mar 2026 · skir.build · its alternatives →
- 17
Accelerate API development with Postman's all-in-one platform. Streamline collaboration and simplify the API lifecycle for faster, better results. Learn more.
2017 · postmancollections.com · its alternatives →
- 18
Molecule is a Go library for parsing protobufs in an efficient and zero-allocation manner. - GitHub - richardartoul/molecule: Molecule is a Go library for parsing protobufs in an efficient and zero-allocation manner.
2020 · github.com · its alternatives →
- 19
Echolon▲95Postman Alternative. Open source, git-native, zero login
Feb 2026 · echolon.app · its alternatives →
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Hi HN, I'm excited to finally launch this project. While existing tools like Postman excel at API discovery and testing, they often require us to navigate complex interfaces, manually construct requests, etc. That's why I created OpenAstra. The core idea is to combine the visual richness of traditional API tools with the simplicity of a chat interface. Think of it as "Postman meets ChatGPT" - allowing us to interact with APIs through natural conversation while retaining core essential features of traditional API tools. If you want to test an endpoint or understand what it does? Just ask. The…
2025 · github.com · its alternatives →
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Apicat is the ultimate offline Postman alternative that stores your .http files locally. It’s Git-friendly, open-source, and highly compatible with Postman. Test APIs offline with this powerful free offline API client designed for developers who need a reliable local API testing tool.
2025 · apicat.com · its alternatives →
- 24
A generator for OpenAPI 3. Contribute to egorsmkv/openapi3-generator development by creating an account on GitHub.
2020 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →