Insomnia

by Kong

The open-source API client.

4.4(300)API Development Tools

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Reviewed by the Softwares.com Editorial Team · Last updated June 2026 · How we rate

Key facts

Vendor: Kong
Pricing: Freemium — Free – $12/user/mo
Free tier: Yes
Platforms: Windows, Mac, Linux
Best for: Developers
Editor rating: 4.4 / 5
Founded: 2016
Headquarters: San Francisco, CA, USA

What is Insomnia?

Insomnia is a api tools tool from Kong. Insomnia is a streamlined, open-source API client and design tool.

Insomnia uses freemium pricing and offers a free tier you can start on without a credit card. Free – $12/user/mo.

It's best suited to developers and runs on Windows, Mac, Linux.

Standout strengths include clean & fast, open source, good for graphql. Worth weighing: smaller ecosystem than postman.

Insomnia pricing

Free

Get Free

Pro

$12/user/mo

Get Pro

Pros

Clean & fast
Open source
Good for GraphQL

Cons

Smaller ecosystem than Postman

Insomnia vs alternatives

Insomnia vs Postman Insomnia vs Resend Insomnia vs Bruno Insomnia vs Postmark Insomnia vs Doppler Insomnia vs Mintlify

See all Insomnia alternatives →

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Related software

Postman

The collaborative platform for API development.

4.6(1,500)Free – $14/user/mo

Resend

The email API for developers.

4.8(200)Free – $20/mo

Bruno

Offline, open-source API client.

4.7(200)Free – $9 once

User reviews

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Frequently asked questions

What is Insomnia?

Insomnia is a streamlined, open-source API client and design tool.

How much does Insomnia cost?

Insomnia is freemium-priced. It has a free tier. Paid plans start at $12/user/mo.

Does Insomnia have a free trial?

Insomnia offers a free tier rather than a time-limited trial.

What platforms does Insomnia support?

Insomnia is available on Windows, Mac, Linux.