768 Open source projects that are alternatives of or similar to Visualvm

No effort, no worry, maximum performance.

Fast batch message passing between nodes for Erlang/Elixir.

Book about PostgreSQL (russian)

Playing with counting word frequencies (and performance) in various languages.

Drill is a HTTP load testing application written in Rust inspired by Ansible syntax

Pcap editing and replay tools for *NIX and Windows - Users please download source from

MLModelCI is a complete MLOps platform for managing, converting, profiling, and deploying MLaaS (Machine Learning-as-a-Service), bridging the gap between current ML training and serving systems.

A better load generator for locust, written in golang.

Samples for "Hibernate performance tuning" talk

A transparent ui-block detection library for Android. (known as BlockCanary)

An android library for displaying fps from the choreographer and percentage of time with two or more frames dropped

One of the fastest embeddable key-value ACID database without WAL. libmdbx surpasses the legendary LMDB in terms of reliability, features and performance.

Benchmarks to compare Haskell streaming library performance

Performance Co-Pilot

Very fast and lightweight, standards-compliant, self-hosted javascript parser with high focus on both performance and stability

🏋️ Find out the cost of adding a new frontend dependency to your project

A 3d raycast engine for Arduino

Sublert is a security and reconnaissance tool which leverages certificate transparency to automatically monitor new subdomains deployed by specific organizations and issued TLS/SSL certificate.

Scouter is an open source APM (Application Performance Management) tool.

High performance, low level networking APIs for building custom servers and clients.

用于快速找到高耗时方法，定位解决Android App卡顿问题。通过gradle plugin+ASM实现可配置范围的方法插桩来统计所有方法的耗时，并提供友好的界面展示，支持耗时筛选、线程筛选、方法名筛选等。(A Tool for Discovering High Time-consuming Methods for Android App)

A 100% compliant, self-hosted javascript parser - https://meriyah.github.io/meriyah

Compile text/template / html/template to regular go code

Source for the TechEmpower Framework Benchmarks project

A .NET library for hardware-accelerated, high performance, immediate mode rendering via Direct2D.

Web性能的方方面面🚀

Implement a live chat beacon in your React application without performance regressions.

📱 Tips and tricks to improve your React Native FlatList performance and memory consumption

⚡️Faster subsequent page-loads by prefetching in-viewport links during idle time

why-did-you-render by Welldone Software monkey patches React to notify you about potentially avoidable re-renders. (Works with React Native as well.)

pepper metrics is a tool, it can helps you collect runtime performance use RED method, and then output as log / timeseries data, by default it use prometheus as datasource, grafana as UI

Twiggy🌱 is a code size profiler

Lightweight tool to deploy PyTorch models to AWS Lambda

🍎Objective C Method Tracing Call Chart

Easily optimize images using WP CLI

Which is the fastest web framework?

Progressive web metrics at your fingertipz

List of performance analysis, monitoring and optimization tools

Distributed load testing made simple

A redis clone in Python 3 to disprove some falsehoods about performance.

PHP Benchmarking framework

Make your site’s pages instant in 1 minute and improve your conversion rate by 1%

Fortio load testing library, command line tool, advanced echo server and web UI in go (golang). Allows to specify a set query-per-second load and record latency histograms and other useful stats.

Yet Another Python Profiler, but this time thread&coroutine&greenlet aware.

Fast json encoder in rust, that encodes the structure of JSON values in their types

Fast Go decoder for dynamic JSON

Xamarin.Forms Performance Playground (Layouts, Bindings, XAMLC, etc)

⚡Metrics to help understand page speed and user experience

内存监控器

API Observability. Trace API calls and Monitor API performance, health and usage statistics in Node.js Microservices.

Evaluates how long the browser will execute your javascript code.

Tools to process Go trace logs into various profiles. Complement for "go tool trace".

A Prometheus exporter to monitor x509 certificates expiration in Kubernetes clusters or standalone

STAT - the Stack Trace Analysis Tool

A simple & lightweight realtime monitoring web UI + server in Node.js

Hermes: a fault-tolerant replication protocol, implemented over RDMA, guaranteeing linearizability and achieving low latency and high throughput.

The bundle extends functionality of FOSElasticaBundle. Improves performance of fos:elastica:populate command

Performance-Bookmarklet helps to analyze the current page through the Resource Timing API, Navigation Timing API and User-Timing - requests by type, domain, load times, marks and more. Sort of a light live WebPageTest.

A flamegraph generator for Postgres EXPLAIN ANALYZE output.

Easy LuaProfiler