textX - textX is a meta-language for building Domain-Specific Languages (DSLs) in Python. It is inspired by Xtext. It will help you build your textual language easily. You can invent your own language or build a support for an existing textual language.
BugSnag - Not all bugs are worth fixing. Prioritize and fix software bugs that matter while improving software stability with every release.
ANTLR - ANTLR, ANother Tool for Language Recognition, is a language tool that provides a framework for...
TrackJS - JavaScript Error Tracking for Modern Web Applications
Owl parser generator - Efficient and understandable parser generator.
Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.