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 |
|---|---|---|---|---|---|---|---|
 CronitorStatus, uptime and performance monitoring for agents, cron jobs, websites, APIs, and everything in between. | ReviewsNone yetWrite one for Cronitor | Lowest paid plan$2per monitor per month, plus $5 per user per monthBusiness, as of October 28, 2026 | Free planYes | Free trial14 days | Public APIYes | Runs onNot confirmed | Main features
|
 Dash0Dash0 is modern OpenTelemetry Native Observability with full cost control. | ReviewsNone yetWrite one for Dash0 | Lowest paid planNot confirmed | Free planNot confirmed | Free trial14 days | Public APIYes | Runs onNot confirmed | Main features
|
 DatadogAI-powered observability and security for any stack, any app, at any scale | ReviewsNone yetWrite one for Datadog | Lowest paid plan$15per host per month, billed annuallyPro, as of October 20, 2026 | Free planNot confirmed | Free trialYes | Public APIYes | Runs oniOS, Android | Main features
|
 DynatraceObservability, AI, automation, and application security in one platform. | ReviewsNone yetWrite one for Dynatrace | Lowest paid plan$7per host per monthFoundation & Discovery, as of October 28, 2026 | Free planNot confirmed | Free trial15 days | Public APIYes | Runs onNot confirmed | Main features
|
 Elastic ObservabilityUnify logs, metrics, and traces on one platform. | ReviewsNone yetWrite one for Elastic Observability | Lowest paid planNot confirmed | Free planNot confirmed | Free trialYes | Public APINot confirmed | Runs onNot confirmed | Main features
|
 HoneycombObservability platform for AI-era software with fast queries and unified telemetry | ReviewsNone yetWrite one for Honeycomb | Lowest paid plan$150per month for 50M events, scaling to 750MPro, as of October 19, 2026 | Free planYes | Free trialYes | Public APIYes | Runs onNot confirmed | Main features
|
 RaygunDetect, diagnose and resolve issues that are affecting end users. | ReviewsNone yetWrite one for Raygun | Lowest paid planNot confirmed | Free planNot confirmed | Free trial14 days | Public APINot confirmed | Runs onNot confirmed | Main features
|
 RollbarError tracking that ends in a fix | ReviewsNone yetWrite one for Rollbar | Lowest paid plan$9per month at 10,000 occurrences, scaling with volumeEssentials, as of October 20, 2026 | Free planYes | Free trial14 days | Public APIYes | Runs onNot confirmed | Main features
|
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 trial. 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