Scalar

API Clients & Documentation
Scalar screenshot
Visit

Scalar is a modern API reference generator and developer documentation platform. It provides interactive API exploration interfaces, OpenAPI specification support, and developer tooling designed to integrate into existing engineering workflows. The platform focuses on rendering clear API documentation and facilitating client-side testing without relying on proprietary ecosystems.

Pricing
Free
Features
Open Source

Checked on Sep 30, 2026.


Alternative resources

Hoppscotch

An open-source API development ecosystem for testing, documenting, and managing REST, GraphQL, and WebSocket requests.

FreeOpen SourceSelf-hostedNo sign-up

Bruno

A Git-native, local-first API client that stores collections as plain-text files directly within your project repository.

FreeFreemiumOpen Source

Voiden.md

An offline-first, Git-native API client that integrates request testing and documentation into plain Markdown files.

FreeOpen SourceSelf-hosted