Best Developer Tools in 2025

The all-in-one Screenshot API for developers: capture websites, generate PDFs, record videos, and automate it all with powerful, scalable infrastructure. No browser setup, no hassle. Just clean results, fast.

Key ScreenshotMAX features:

Annoyance Blocking Scheduled Screenshot Tasks Full-Page Screenshot Rendering HTML to PDF Conversion

Try for free freemium $19.0 / Monthly

A utility-first CSS framework for rapidly building custom user interfaces.

Key Tailwind CSS features:

Utility-First Approach Customization Consistent Design Responsive Design

Open Source

A small framework for server-rendered universal JavaScript apps.

Key Next.js features:

Server-Side Rendering (SSR) Static Site Generation (SSG) API Routes File-Based Routing

Open Source

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications.

Key Node.js features:

Asynchronous and Event-Driven JavaScript Everywhere Large Community and NPM High Performance

Vercel is the platform for frontend developers, providing the speed and reliability innovators need to create at the moment of inspiration.

Key Vercel features:

Easy Deployment Fast Performance Serverless Functions Integration with Next.js

Build and debug modern web and cloud applications, by Microsoft.

Key VS Code features:

Cross-platform Extensibility Integrated Git Performance

Open Source

Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla.

Key Speedtest.net features:

User-Friendly Interface Global Server Network Detailed Results Mobile App Availability

Quickly test your internet speed with this fast-loading speed test powered by Netflix.

Key Fast.com features:

Simplicity Ad-Free Integration with Netflix Quick Results

A JavaScript library for building user interfaces.

Key React features:

Component-Based Architecture Virtual DOM Strong Community and Ecosystem JSX Syntax

Open Source

An open source Firebase alternative.

Key Supabase features:

Real-time capabilities PostgreSQL foundation Open-source Ease of use

Open Source

Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.

Key Firebase features:

Real-time Database Easy Integration Scalability Authentication Services

Kubernetes is an open source orchestration system for Docker containers.

Key Kubernetes features:

Scalability Portability High Availability Extensibility

Open Source

Simple and flexible HTML, CSS, and JS for popular UI components and interactions.

Key Bootstrap features:

Responsive Design Pre-designed Components Cross-browser Compatibility Extensive Documentation

Open Source

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Key Flagsmith features:

Feature Flags Remote Config A/B/X Testing & Optimization Organization Management

Try for free Open Source freemium