Listed alphabetically. A tool is ranked by its reviews once it has 3.
| Tool | Reviews | Lowest paid plan | Free plan | Free trial | Public API | Runs on | Main features |
|---|---|---|---|---|---|---|---|
 MagicBellSend notifications to email, mobile push, web push, Slack, and SMS through a single API. | ReviewsNone yetWrite one for MagicBell | Lowest paid plan$249per monthStartup, as of November 14, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | Runs onWeb, Mobile | Main features
|
 NovuOpen-source infrastructure to notify your users and let your agents talk with them. | ReviewsNone yetWrite one for Novu | Lowest paid plan$30per month, starting fromPro, as of November 13, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 OneSignalPush, email, SMS/RCS, and in-app messaging in one platform. | ReviewsNone yetWrite one for OneSignal | Lowest paid plan$19per month, starting priceGrowth, as of November 13, 2026 | Free planYes | Free trialNot confirmed | Public APINot confirmed | Runs onAndroid, iOS | |
 PendoPendo feeds product context to the apps and AI agents you build or buy. | ReviewsNone yetWrite one for Pendo | Lowest paid planNot confirmed | Free planYes | Free trial30 days | Public APIYes |
From each tool's own website. “Not confirmed” means we couldn't confirm it there, not that the tool doesn't have it. Each tool's page says when its facts were checked.
How this list is made
A tool is listed here only when we've confirmed on its own website that it has a free plan. Tools we couldn't confirm it for are left out, even if they may have it. Vendors can't pay for a place on this list. Add a tool we missed