Knock

by Knock

Notifications infrastructure.

4.7(100)API Development Tools

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

Key facts

Vendor: Knock
Pricing: Freemium — Free – $250/mo
Free tier: Yes
Platforms: Web, Api
Best for: Product Teams, Developers
Editor rating: 4.7 / 5
Founded: 2021
Headquarters: New York, NY, USA

What is Knock?

Knock is a api tools tool from Knock. Knock is a notifications platform for sending product notifications across email, push, SMS, and in-app.

Knock uses freemium pricing and offers a free tier you can start on without a credit card. Free – $250/mo.

It's best suited to product-teams, developers and runs on Web, Api.

Standout strengths include cross-channel notifications, workflow builder, good dx. Worth weighing: costs scale.

Knock pricing

Free

Get Free

Pro

$250/mo

Get Pro

Pros

Cross-channel notifications
Workflow builder
Good DX

Cons

Costs scale

Knock vs alternatives

Knock vs Postman Knock vs Resend Knock vs Bruno Knock vs Postmark Knock vs Doppler Knock vs Mintlify

See all Knock 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 Knock?

Knock is a notifications platform for sending product notifications across email, push, SMS, and in-app.

How much does Knock cost?

Knock is freemium-priced. It has a free tier. Paid plans start at $250/mo.

Does Knock have a free trial?

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

What platforms does Knock support?

Knock is available on Web, Api.