Projects sharing features with Greys Anatomy

btrace is a JVM dynamic tracing tool and performance profiler used for injecting safe instrumentation scripts into a running Java Virtual Machine without requiring a process restart. It functions as a Java agent framework and a Model Context Protocol server, exposing JVM diagnostic operations and tracing tools to large language models and AI assistants. The project distinguishes itself by enabling real-time code injection and bytecode-level instrumentation via a secure binary protocol. It ensures production stability through a static safety analysis engine that blocks unstable code patterns,

Perfetto is a platform for system-level performance tracing and analysis on Linux and Android. It combines a high-throughput trace recorder, a SQL-based query engine, and a browser-based visualizer into a single toolchain. The platform covers CPU scheduling and call-stack profiling, native and Java heap memory allocation tracking, GPU and graphics events, and system-wide counters such as CPU frequency and power consumption. The architecture decouples trace recording from offline analysis, using a compact protobuf format for event encoding and columnar storage for efficient SQL queries. The we

btrace is a Java dynamic tracing tool and instrumentation framework designed for real-time diagnostics. It enables the injection of monitoring code into running Java virtual machines to analyze behavior and diagnose processes without requiring an application restart. The platform features a dynamic probe engine for executing single-line debugging commands to print data and trace call stacks. It provides an extensible tracing framework that supports custom functionality and external integrations through isolated implementation modules. The system covers runtime performance monitoring, method

Bytehound is a Linux memory profiler that utilizes a custom global allocator to intercept memory requests and track allocations and deallocations. It records full call-stack traces for every memory operation to map allocations back to their originating source code. The project features a remote memory profiling system that streams capture data via network sockets to a separate machine, minimizing resource overhead on the target system. Analysis is supported by a specialized domain-specific query language used to automate the detection of memory patterns and anomalies. The tool covers heap al

BCC is an eBPF development toolkit and tracing framework used for monitoring and analyzing the Linux kernel. It functions as a performance analysis tool and debugging utility to capture system events, measure kernel latency, and provide network observability. The project distinguishes itself by providing a build system that integrates with LLVM to compile C-like code into BPF bytecode at runtime. It utilizes BPF Type Format data for relocations to maintain cross-kernel compatibility and extracts kernel headers to ensure the generated programs match the specific kernel version. The toolkit co

XposedBridge is an Android Java hooking framework and bytecode instrumentation engine. It functions as a runtime system for intercepting and modifying Java method calls within the Android operating system and installed applications. The project provides a mechanism for zygote process injection, ensuring that all spawned applications inherit the instrumentation logic. It enables the modification of internal Android system behaviors through method proxying and Java reflection to access private internal system members. The framework supports dynamic Android instrumentation and runtime analysis,

Hugo is an annotation-based debugging tool and Java method logging library. It functions as a method execution tracker that records method arguments, return values, and execution durations during application runtime. The project differentiates itself by using annotation-driven instrumentation and bytecode-level aspect injection to capture telemetry without requiring manual print statements. It employs post-compilation bytecode manipulation and aspect-oriented wrapping to insert interception logic around annotated method boundaries. The library covers observability and monitoring capabilities

Chromatic is a Chromium runtime modifier and JavaScript engine injector designed to alter the low-level operational characteristics of Chromium and its embedded V8 engine. It functions as a tool for injecting custom logic into the V8 JavaScript engine to change application behavior at runtime. The project provides mechanisms for browser engine instrumentation and V8 runtime manipulation. It enables the modification of the internal execution flow of JavaScript within Chromium-based environments to extend native browser capabilities or bypass standard limitations.

Objection is a dynamic instrumentation framework and runtime exploration toolkit for mobile application security analysis. It provides a command-line interface to interact with the memory and state of iOS and Android applications during active execution, serving as a toolkit for runtime analysis and security testing. The project distinguishes itself by providing specialized capabilities to bypass common mobile security controls, including SSL pinning, biometric authentication, and root or jailbreak detection. It enables the extraction of sensitive credentials and data from secure storage syst

go-torch is a profiling tool for capturing the execution state of Go programs and transforming raw binary data into visual representations of program performance. It functions as a flame graph profiler and performance visualization utility that identifies expensive code paths through the collection of CPU and memory stack traces. The tool features a network-capable remote process profiler that connects to endpoints to capture and export execution profiles from Go binaries. It utilizes stochastic profiling to synthesize execution data into call graphs, allowing for the identification of bottle

This project is a PHP docblock annotation parser and reflection metadata tool designed to extract structured metadata from doc-comments and convert them into class instances. It functions as a system for retrieving and managing custom metadata attached to classes, methods, and properties. The library includes a metadata caching system to store parsed results, which reduces the performance overhead associated with repeated reflection calls and string parsing. It also serves as a static analysis utility for validating source code structure and enforcing coding standards through automated docblo

MLeaksFinder is a diagnostic framework and profiling utility designed for the automatic detection of memory leaks and unfreed objects in iOS applications. It functions as a memory leak detector and profiling tool that identifies retain cycles and analyzes object lifecycles for both Swift and Objective-C code. The tool identifies circular dependencies by tracing reference chains and traversing object graphs, starting from a root view controller. It provides precise debugging data by capturing the allocation stacks of leaked objects to trace the origin of the memory leak. The framework include

Foundry is an Ethereum smart contract development toolkit and blockchain simulator designed for compiling, testing, and deploying contracts for the Ethereum Virtual Machine. It provides a local environment for simulating blockchain state and forking live networks to execute code without modifying the actual chain. The project features a property-based fuzzing engine to identify edge-case failures in contract logic and a transaction debugger for analyzing detailed execution traces and gas consumption. It enables developers to mirror the state of a remote chain locally to test against real-worl

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

TShock is a server management tool and plugin framework for dedicated Terraria servers. It functions as an administrative suite and anti-cheat tool designed to control player permissions, monitor game integrity, and extend server functionality. The project provides a framework for creating custom plugins that modify the game world and implement new commands. It enables internal state modification through bytecode injection, packet interception, and memory manipulation to bypass engine restrictions and alter live game environments. Administrative capabilities include a hierarchical role-based

Metadata is a PHP library for loading and managing class, method, and property metadata from inline annotations, YAML, XML, and PHP configuration files. It acts as an object-relational mapping support tool, helping persistence layers and serializers inspect PHP object structures through unified metadata drivers. The library parses configuration data using specialized drivers to populate internal metadata structures, abstracting disparate data sources into a single consistent interface for inspecting classes and properties. It supports chain-based driver fallback, allowing multiple metadata lo

Micro8 is a security auditing knowledge base and penetration testing resource library. It serves as a curated collection of guides and documentation focused on vulnerability assessment. The project provides educational content and study guides for manual source code review, domain escalation, and internal network auditing. It includes a toolkit of reference materials for analyzing network traffic logs and identifying brute-force patterns. The library covers technical domains including web penetration testing and privilege escalation. It organizes these materials through PDF-based knowledge r

pyinstrument is a statistical sampling profiler for Python that records the call stack at regular intervals to identify performance bottlenecks with low overhead. It tracks wall-clock time, including I/O and external service calls, and provides specialized profiling for asynchronous programs by attributing time spent awaiting tasks to the calling function. The project converts captured execution data into interactive HTML reports, JSON, and flamecharts. It includes a call stack visualizer to simplify the analysis of execution paths and supports the profiling of individual cells within interac

gops is a command-line diagnostic toolset for monitoring, profiling, and managing the runtime state of active Go applications. It functions as a runtime diagnostic tool that provides a focused interface for analyzing memory, profiling performance, and monitoring the health of running processes. The tool provides a set of specialized utilities including a performance profiler for capturing CPU and heap profiles, a memory analyzer for identifying leaks and triggering garbage collection, and a process monitor for discovering running binaries and visualizing process hierarchies. The project cove

govaluate is a Go expression evaluator and runtime logic parser. It functions as a dynamic rule engine that converts string-based expressions into executable operations, allowing for the calculation of mathematical and logical expressions at runtime. The library enables the execution of business rules and custom formulas without recompiling source code. It supports extending evaluation behavior through the injection of external parameters and the execution of user-defined custom functions. The system provides capabilities for dynamic data validation, including regular expression matching and

Javassist is a bytecode engineering toolkit for analyzing, modifying, and generating Java bytecode and class files. It functions as a bytecode manipulation library that allows for the editing of class files through either direct bytecode access or high-level source code syntax. The project provides specialized tools for the programmatic creation of new Java classes and interfaces during runtime. It includes a dynamic proxy generator for intercepting method calls and a class loader interceptor that automatically modifies class definitions as they are loaded into the Java Virtual Machine. Addi

CatServer is a hybrid Minecraft server implementation designed to simultaneously execute Forge mods and Bukkit or Spigot plugins within a single environment. It functions as a runtime bridge that enables the integration of heterogeneous modding and plugin ecosystems, allowing content from both sources to operate together. The project provides a compatibility layer that translates plugin dependencies and synchronizes data between external extensions and internal game logic. By utilizing a unified classloader hierarchy and runtime bytecode instrumentation, it allows standard server extensions t

Jint is a JavaScript interpreter for the .NET ecosystem that executes code without requiring a browser or Node.js environment. It is an ECMAScript compliant engine that provides a sandboxed scripting runtime with configurable limits on memory and time to run untrusted code. The engine features a native object bridge that exposes .NET classes and methods to JavaScript scripts for bidirectional data exchange. To reduce overhead during repeated executions, it utilizes a precompiled script cache to store parsed JavaScript in memory. The project covers asynchronous script execution and promise ha

gperftools is a collection of specialized tools for profiling CPU usage, detecting memory errors, and providing high-performance memory allocation. It provides a memory profiling toolkit for C++ applications, including a sampling CPU profiler and a heap profiler for analyzing consumption patterns. The project includes a high-performance memory allocator designed as a multi-threaded replacement for standard allocation to reduce contention and improve execution speed. It further provides a memory debugger to identify illegal memory access and double frees. The toolkit covers broad diagnostic c

Gosub-engine is an HTML5 browser engine and web rendering pipeline that parses HTML5 and CSS3 to compute layout and render web content to pixels. It functions as a JavaScript runtime environment with a virtual machine and event loop for handling dynamic logic and asynchronous tasks. The system also includes a web storage manager for persisting cookies, local storage, and session storage. The project features a headless browser renderer capable of generating page images or extracting plain text without a visible window. It supports cross-platform graphics rendering through pluggable CPU and GP

This project is a Chinese translation of a comprehensive guide to the Go programming language. It serves as a localized educational resource and technical manual designed to provide guidance on language syntax, design, and software development. The resource covers a broad range of Go language education, including the implementation of programming patterns and system design. It includes translated lessons and examples that focus on core language features such as concurrency and the use of interfaces. The content spans various capability areas, including language fundamentals, data modeling, r

SimpleCov is a Ruby code coverage tool and analysis engine used to track which lines, branches, and methods of code execute during tests. It functions as a coverage threshold enforcer and test suite aggregator, recording execution data to identify untested areas of an application. The tool distinguishes itself through the ability to merge coverage results from parallel worker processes and subprocesses into a single unified report. It supports baseline comparison to detect coverage regressions and can gather data from code executed via dynamic evaluation methods, such as those used in templat