Yaak

Active

Country: United States (US)
Founded: 2024
Developer: Greg Schier
Pricing: Freemium
Open source: Yes
Platforms: macOS, Windows, Linux

Indexes

API Testing

Overview

Yaak is a local-first, open-source API client for testing and interacting with APIs. It operates fully offline, stores data locally, and uses Git for collaboration without sending data to the cloud. Designed for developers prioritizing security, simplicity, and intuitive UI, it stands out with no telemetry, no third-party tracking, and all features available without paywalls.²³⁴⁷

Key Features

Offline Operation - Runs fully offline with local data storage and no servers or background processes required.
Git Collaboration - Syncs API requests via Git for version control and team collaboration.
Sidebar Filtering - Recursive filtering in sidebar using query language to navigate large workspaces.
Postman Imports - Supports importing from Postman including OAuth, JWT, and API key authentication.
Streaming Output - Provides streaming for HTTP responses without overcomplication.
Environment Support - Offers environment ordering and management for requests.
Agent-Friendly CLI - Includes a CLI optimized for scripting and automation.
No Telemetry - Excludes tracking, analytics, or third-party libraries for privacy.

Pricing

Plan	Price	Includes
Free	$0	All core features, open-source, no paywalls.
Paid	Subscription (details not specified)	Supports development; exact inclusions unclear from available data.

Platforms & Requirements

Yaak is a desktop application available for macOS, Windows, and Linux with installation instructions provided. No specific minimum requirements or platform limitations are detailed in sources. It requires no servers, agents, or daemons.²³⁸

Integrations & Ecosystem

Git
Postman (import)
OAuth
JWT
API Keys

Alternatives

App	Difference
Insomnia	Commercial version sold by original developer; includes cloud features unlike Yaak's offline focus.
Postman	Cloud-based with paywalled features; Yaak offers free offline alternative with Git sync.
Hoppscotch	Web-based open-source client; Yaak is desktop-only with stronger local-first emphasis.
Thunder Client	VS Code extension; Yaak provides standalone desktop app with Git integration.

Reputation

Yaak receives high user satisfaction, with 93% likelihood to recommend based on 2025 survey, praised for simplicity, intuitive UI, offline capabilities, and no paywalled features. Thousands of developers use it daily for secure API interactions. Some note low contribution to open-source due to focus on transparency over community development.⁴⁵

Sources (8)