Open-source alternatives to Lynx

Laravel Debugbar is a web-based debugging toolbar and application profiler for Laravel. It provides a visual interface to inspect database queries, logs, and performance metrics in real time to identify and resolve bugs during development. The tool features a database query monitor to capture SQL statements and timings, as well as a request inspector for analyzing route metadata, loaded views, and HTTP request data. It includes a profiler for measuring execution time and memory usage to identify bottlenecks in the request lifecycle. Its observability capabilities cover exception capture, app

py-spy is a sampling profiler and process debugger for Python. It allows for the analysis of running processes to identify performance bottlenecks and diagnose hanging programs without requiring code changes or restarts. The tool operates by reading the memory of a running process from the outside, which enables non-invasive sampling and state collection without pausing execution. It can resolve binary symbols to capture performance data from native extensions written in compiled languages and generate visual flame graphs for both native extensions and subprocesses. The project provides capa

backward-cpp is a C++ stack trace library and debugging utility designed to capture, resolve, and print detailed execution traces and crash reports. It functions as a crash reporter and call stack printer that translates raw memory addresses into human-readable function names, filenames, and line numbers. The project provides automated crash reporting by registering system handlers for fatal errors, such as segmentation faults, to automatically generate execution traces upon program failure. It distinguishes itself by extracting source file fragments from disk to display specific lines of cod

☠️ A development tool that reveals your UI's bones

Just like scyther, this menu helps you cut through bugs in your iOS app.

A Lua plugin for Neovim that helps manage breakpoints (including exception filters), create advanced breakpoints using vim.ui.input, and display breakpoint properties as virtual text with nvim-dap

Smart and highly customizable insertion of various kinds of log statements.

a iOS network debug library, monitor HTTP requests

PySnooper is a diagnostic library for Python that tracks variable values and execution flow to provide a detailed history of program state. By applying decorators to functions, generators, or classes, it logs line-by-line execution and state changes without requiring manual print statements. The tool distinguishes itself through its ability to monitor nested function calls and concurrent operations in multi-threaded applications. It captures execution context by accessing the current stack frame, allowing for the inspection of local variables and the evaluation of arbitrary expressions during

gdbgui is a web-based graphical frontend and visualizer for the GNU Debugger. It serves as a compiled language debugger that provides source-level inspection for C, C++, Go, Rust, and Fortran. The project acts as a remote debugging interface, providing a secure web portal for connecting to and controlling GDB sessions over a network. It distinguishes itself by offering a browser-based environment to visualize call stacks and data structures for programs running via the GNU Debugger. The interface covers program execution control and breakpoint management, featuring graphical variable inspect

Set of easy to use debugging tools for iOS developers & QA engineers.

Debugging in Ruby

Step-by-step debugging and stack navigation in Pry

DoraemonKit is a mobile frontend development toolset designed to optimize the lifecycle of web and hybrid mobile applications. It functions as a comprehensive suite of productivity tools, providing specialized utilities for mobile UI inspection, web view debugging, and on-device performance monitoring. The toolset distinguishes itself through several targeted simulation and interception capabilities. It includes a network traffic interceptor for mocking API responses without modifying source code, a device state simulator for overriding GPS coordinates, and a mobile web debugging bridge that

django-debug-toolbar is a developer tool that provides a browser-based set of diagnostic panels for inspecting HTTP requests and responses within a Django web application. It serves as a server-side diagnostics tool and web framework development suite, allowing developers to profile and inspect request-response cycles. The tool focuses on Django application troubleshooting, database optimization, and general web development. It enables the analysis of SQL queries and database performance to identify slow calls and reduce the number of requests per page. The software includes capabilities for

Parsing ELF and DWARF in Python

Seer is a graphical frontend for GDB that provides a visual interface for inspecting variables, managing breakpoints, and stepping through code. It functions as a low-level debugger visualizer with specialized tools for call stack inspection and register visualization. The project distinguishes itself by integrating low-level program analysis directly into the visual experience, featuring a synchronized assembly overlay that maps CPU registers and assembly instructions to source code lines. It also includes memory bug detection capabilities by randomizing the program starting address during t

A lightweight Neovim plugin for inserting structured console.* statements in JavaScript and TypeScript files.

Chisel is a collection of LLDB debugging extensions and tools for inspecting and manipulating the user interface of iOS applications. It provides utilities for tracing responder chains, traversing view hierarchies, and modifying UI elements during runtime. The toolset distinguishes itself through specialized visual debugging capabilities, including a suite for toggling view visibility and borders to isolate layout issues, as well as a system to export colors and images from a running app to a desktop previewer for asset verification. The project covers a broad range of UI diagnostic capabili

Stetho is a debug bridge that connects Android applications to Chrome Developer Tools. It allows for the real-time inspection of network traffic, internal application state, and the user interface layout directly within a desktop browser. The project provides specialized inspectors for analyzing Android-specific components. This includes a network inspector for capturing HTTP requests and responses, an SQLite database browser for querying local storage, and a view hierarchy inspector for mapping UI elements and styles. Additional capabilities cover runtime execution via an embedded JavaScrip

FLEX is an in-app debugging tool and runtime exploration environment for iOS applications. It provides an integrated suite for inspecting and modifying the internal state of a running process without the use of an external debugger. The project includes a runtime inspector for browsing the memory heap and calling methods dynamically, alongside a view hierarchy debugger for visualizing and adjusting layout structures in real time. It features a network traffic monitor to log and analyze HTTP request history, headers, and responses, as well as a sandbox manager for viewing and editing files and

⚡ Seamlessly debug Azure Functions in Neovim with automatic DAP integration

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