Sentry

Sentry is an open-source rash reporting platform that provides visibility across the entire stack and gives developers the details they need to fix their bugs.

More Details

Clarification about the free type:

Like many other open-source projects, this company also offers a freemium cloud plan. In that case, you have two options:

Use the open source software: if you have technical knowledge, you can download the full version of the software and install it on your device or server completely for free without any restrictions.
Use the freemium plan: if you don’t have the technical knowledge or prefer not to install the software yourself, you can try the software freemium plan. Just sign up, and you’re in. Although it’s much more limited, in many cases, it can still be useful and solve your problem.

See on GitHub.

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Tool ID

🔓 Freemium Tool
🕓 Free to Try
📖 Open Source

Web-based
No Ads
Signup Required
No Credit Card Required
Use in: N/A