# Open Source

> Open Source software, projects, and tools

Source: https://www.checklyhq.com/blog/tag/open-source/

---

# Open Source articles

Open Source

Open Source software, projects, and tools

April 29, 2025

## Build vs. Buy: Uptime Monitoring

Nočnica Mellifera

[Open Source](https://www.checklyhq.com/blog/tag/open-source/)[API Monitoring](https://www.checklyhq.com/blog/tag/api-monitoring/)[Uptime Monitoring](https://www.checklyhq.com/blog/tag/uptime-monitoring/)

December 2, 2024

## Prometheus Blackbox Exporter vs. Kuberhealthy for Kubernetes

Nočnica Mellifera

[Open Source](https://www.checklyhq.com/blog/tag/open-source/)

August 20, 2024

## Make Your End-to-end Tests More Stable with Playwright's User-first Selectors

Nočnica Mellifera

[Playwright](https://www.checklyhq.com/blog/tag/playwright/)[Open Source](https://www.checklyhq.com/blog/tag/open-source/)[Development](https://www.checklyhq.com/blog/tag/development/)

June 17, 2024

## Playwright surpasses Cypress for downloads… what happens now?

Jonathan Canales

[Events](https://www.checklyhq.com/blog/tag/checkly-event/)[Playwright](https://www.checklyhq.com/blog/tag/playwright/)[Open Source](https://www.checklyhq.com/blog/tag/open-source/)

June 14, 2024

## Writing Your First Visual Regression Check in Playwright

Nočnica Mellifera

[Checkly Community](https://www.checklyhq.com/blog/tag/community/)[Open Source](https://www.checklyhq.com/blog/tag/open-source/)[Playwright](https://www.checklyhq.com/blog/tag/playwright/)

June 5, 2024

## OpenTelemetry Metrics: Concepts, Types & Instruments

Sara Miteva

[Open Source](https://www.checklyhq.com/blog/tag/open-source/)[OpenTelemetry](https://www.checklyhq.com/blog/tag/opentelemetry/)

May 31, 2024

## Saving Three Months of Latency with a Single Trace: Coralogix and OpenTelemetry on Checkly

Jan Grzesik

[Open Source](https://www.checklyhq.com/blog/tag/open-source/)[OpenTelemetry](https://www.checklyhq.com/blog/tag/opentelemetry/)

April 17, 2024

## Checkly adds deep synthetic monitoring to Coralogix with new integration

Cinthia Portugal

[Announcements](https://www.checklyhq.com/blog/tag/announcements/)[Open Source](https://www.checklyhq.com/blog/tag/open-source/)[Synthetic Monitoring](https://www.checklyhq.com/blog/tag/synthetic-monitoring/)

March 16, 2024

## Running Your Playwright Tests in Parallel or in Sequence

[Checkly Community](https://www.checklyhq.com/blog/tag/community/)[Open Source](https://www.checklyhq.com/blog/tag/open-source/)[Playwright](https://www.checklyhq.com/blog/tag/playwright/)