$devvkit learn --libraries

Libraries Guide

Curated guides to the most essential developer libraries. Each guide covers setup, core APIs, and best practices.

Universal(5)

[5 sections]cURLCommand-line tool for transferring data with URL syntax, supporting HTTP, HTTPS, FTP, and more.[4 sections]jqLightweight command-line JSON processor — slice, filter, map, and transform JSON data.[7 sections]GitDistributed version control system for tracking changes and collaboration.[5 sections]DockerContainer platform for building, shipping, and running applications in isolated environments.[7 sections]SQLStructured Query Language for managing relational databases.

JavaScript / TypeScript(27)

[6 sections]Express.jsMinimal Node.js web framework providing features for web and mobile applications.[6 sections]ReactLibrary for building user interfaces with declarative, component-based architecture.[5 sections]Next.jsReact framework for production with SSR, static generation, and API routes.[5 sections]PrismaNext-generation ORM for Node.js and TypeScript with type-safe database access.[6 sections]ZodTypeScript-first schema declaration and validation library with static type inference.[6 sections]TanStack Query (React Query)Async state management for TS/JS — handles server state caching and background refetching.[5 sections]AxiosPromise-based HTTP client with interceptors, auto JSON parsing, and request cancellation.[6 sections]LodashUtility library for everyday JavaScript data manipulation.[5 sections]Day.jsFast 2kB date library with Moment.js-compatible API.[5 sections]JestJavaScript testing framework with zero-config, assertions, mocking, and coverage.[5 sections]PlaywrightEnd-to-end testing framework with cross-browser support, auto-waiting, and network interception.[7 sections]Tailwind CSSUtility-first CSS framework for building custom designs without leaving HTML.[5 sections]shadcn/uiReusable React components built with Radix UI and Tailwind CSS — copy-paste, not a dependency.[6 sections]tRPCEnd-to-end typesafe APIs — call server procedures from client without code generation.[6 sections]Drizzle ORMTypeScript ORM that feels like SQL — relational query builder with zero runtime overhead.[6 sections]Vue.jsProgressive JavaScript framework for building UIs with a reactive, composable component model.[6 sections]NuxtFull-stack Vue framework with SSR, SSG, file-based routing, and auto-imports.[7 sections]AngularPlatform for building client-side applications with TypeScript, dependency injection, and a component-based architecture.[6 sections]SvelteKitFull-stack framework built on Svelte — compile-first, no virtual DOM, isomorphic.[6 sections]RemixFull-stack web framework with nested routes, server-side data loading, and progressive enhancement.[7 sections]NestJSProgressive Node.js framework for building efficient, reliable, and scalable server-side applications.[6 sections]FastifyFast and low-overhead Node.js web framework with schema-based serialization and a powerful plugin system.[6 sections]HonoUltralight web framework for Cloudflare Workers, Deno, Bun, and Node.js.[6 sections]SolidJSReactive JavaScript framework with fine-grained updates and no virtual DOM.[6 sections]GatsbyReact-based static site generator with GraphQL data layer and rich plugin ecosystem.[6 sections]LitSimple library for building fast, lightweight web components with reactive properties.[6 sections]AstroContent-focused web framework that ships zero JS by default, with island architecture.

Python(10)

[6 sections]FlaskLightweight Python web framework — ideal for APIs, microservices, and small applications.[6 sections]DjangoHigh-level Python web framework with batteries-included philosophy — ORM, admin, auth.[6 sections]FastAPIModern Python web framework for APIs with automatic OpenAPI docs and data validation.[5 sections]SQLAlchemyPython SQL toolkit and ORM — Core expression language plus full ORM with Unit of Work.[5 sections]PandasData analysis and manipulation library with DataFrame and Series structures.[5 sections]NumPyFundamental package for numerical computing in Python with N-dimensional arrays.[5 sections]pytestPython testing framework with minimal boilerplate, powerful fixtures, and rich assertions.[5 sections]HTTPXModern Python HTTP client with async support, connection pooling, and HTTP/2.[6 sections]StarletteLightweight ASGI framework for building high-performance async Python web services.[6 sections]CeleryDistributed task queue for Python with support for scheduling, retries, and multiple brokers.

Rust(10)

[5 sections]SerdeFramework for serializing and deserializing Rust data structures efficiently.[6 sections]TokioAsync runtime for Rust — event-driven, non-blocking I/O with work-stealing scheduler.[6 sections]AxumErgonomic async web framework built on Tokio, Tower, and the HTTP ecosystem.[6 sections]TauriBuild desktop applications with a web frontend and a Rust backend.[6 sections]ClapCommand-line argument parser for Rust with derive macros and compile-time validation.[4 sections]RayonData-parallelism library for Rust — transform sequential iterators into parallel ones.[6 sections]SQLxAsync SQL toolkit for Rust with compile-time query checking.[6 sections]Actix WebHigh-performance async HTTP framework for Rust with actor-like middleware and WebSocket support.[6 sections]RocketRust web framework focused on ease of use, type safety, and convention over configuration.[6 sections]LeptosFull-stack Rust web framework with fine-grained reactivity, SSR, and isomorphic components.

Cross-platform(2)

[6 sections]FlutterGoogle's UI toolkit for building natively compiled mobile, web, and desktop applications from a single codebase.[6 sections]React NativeBuild native mobile apps using React with JavaScript/TypeScript and native platform components.

Performance & Profiling(7)

[5 sections]LighthouseAutomated tool for auditing web page quality — performance, accessibility, SEO, and best practices.[6 sections]k6Developer-centric load testing tool with a JavaScript scripting API and Grafana dashboards.[4 sections]wrk & heyUltra-fast HTTP benchmarking tools. wrk is multithreaded; hey adds request body support and a simpler interface.[5 sections]VegetaHTTP load testing tool with constant throughput, binary output, and Go library integration.[6 sections]Apache JMeterFull-featured load testing tool with GUI, distributed testing, and support for HTTP, JDBC, JMS, and more.[5 sections]perf (Linux)The Swiss Army knife of Linux profiling — CPU sampling, cache misses, branch prediction, tracepoints, and more.[5 sections]ValgrindMemory debugging, leak detection, and profiling toolset for compiled programs.

Network Diagnostics(6)

[5 sections]tcpdump & tsharkCommand-line packet analyzers for network troubleshooting, protocol inspection, and security analysis.[6 sections]NmapNetwork discovery and security scanning tool. Find live hosts, open ports, OS fingerprinting, and service versions.[5 sections]dig & nslookupDNS lookup tools for querying name servers, debugging resolution issues, and verifying DNS records.[5 sections]iperf3Network bandwidth measurement tool. Tests TCP/UDP throughput, jitter, and packet loss between two endpoints.[4 sections]MTRCombines traceroute and ping into a continuous, real-time network path diagnostic tool.[4 sections]netstat & ssSocket statistics — list open ports, active connections, routing tables, and interface statistics.

System Monitoring(5)

[4 sections]htop & btopInteractive process viewers and system monitors with color-coded resource usage (CPU, memory, swap, tasks).[5 sections]GlancesCross-platform system monitoring dashboard with web UI, REST API, and historical data export.[4 sections]ncdu & dufDisk usage analyzers — ncdu for interactive navigation, duf for disk-free summaries.[4 sections]iostat & dstatI/O and system resource statistics — disk performance, CPU utilization, and device-level metrics.[5 sections]procsModern `ps` replacement with colorized, searchable, Docker-aware process listing.

Security & Cryptography(5)

[5 sections]OpenSSLFull-featured cryptography toolkit for TLS/SSL, certificate management, encryption, and hashing.[5 sections]GPGEncryption and signing tool using OpenPGP standard. Encrypt files, sign commits, verify integrity.[5 sections]OWASP ZAPWeb application security scanner with automated, passive, and manual testing modes. Free alternative to Burp Suite.[5 sections]sqlmapAutomatic SQL injection detection and exploitation tool with database fingerprinting and data extraction.[5 sections]HashcatWorld's fastest password recovery tool with GPU acceleration, supporting 320+ hash types.

AI / LLM Tools(16)

[5 sections]OllamaRun large language models locally with one command. Pull, manage, and serve models via a REST API.[5 sections]llama.cppC/C++ LLM inference engine. Run quantized models on CPU/GPU with minimal dependencies.[5 sections]vLLMHigh-throughput LLM serving engine with PagedAttention for efficient GPU memory management.[6 sections]AiderAI pair programming in the terminal. Chat with LLMs that edit your code directly with git integration.[5 sections]Open InterpreterNatural language interface for your computer. LLMs execute Python, shell, and JavaScript to automate tasks.[5 sections]Hugging Face CLIInteract with the Hugging Face Hub — download models/datasets, upload, and manage repos from the terminal.[5 sections]ChromaDB & txtaiEmbedding databases and vector search for semantic similarity, RAG pipelines, and AI-powered retrieval.[5 sections]ComfyUINode-based Stable Diffusion workflow editor for image generation, inpainting, and video synthesis.[5 sections]MLflowOpen-source platform for the ML lifecycle — experiment tracking, model registry, deployment, and evaluation.[5 sections]AutoGen & CrewAIMulti-agent AI frameworks for orchestrating autonomous agents that collaborate on complex tasks.[6 sections]CursorAI-native code editor built on VS Code. Features tab completion, inline chat, and multi-file Composer edits.[5 sections]Claude CodeAgentic AI coding tool that runs in your terminal. Claude reads, writes, and refactors files autonomously.[5 sections]GitHub CopilotAI pair programmer with autocomplete, chat, and PR summaries — embedded in VS Code, JetBrains, and the GitHub CLI.[5 sections]Continue.devOpen-source AI code assistant for VS Code and JetBrains. Use any model — local, cloud, or custom endpoint.[5 sections]WindsurfAgentic IDE with Cascade mode that auto-fixes errors, navigates code, and makes multi-file edits autonomously.[5 sections]OpenCodeOpen-source AI coding agent that works in your terminal, IDE, or desktop. Supports any model provider, LSP-aware, and privacy-first.

Automation & CI/CD(5)

[5 sections]AnsibleAgentless IT automation framework for configuration management, application deployment, and orchestration.[5 sections]Terraform & OpenTofuInfrastructure as Code — declare cloud resources (AWS, GCP, Azure) in HCL and provision them predictably.[5 sections]Airflow & PrefectWorkflow orchestration platforms for scheduling, monitoring, and managing data pipelines as DAGs.[5 sections]N8NFair-code workflow automation with a visual node editor. Connect 400+ apps without writing code.[4 sections]Act & JustLightweight task runners. Act runs GitHub Actions locally; Just is a modern `make` for project commands.

Dev Productivity(5)

[5 sections]fzfGeneral-purpose fuzzy finder for files, processes, git commits, command history.[5 sections]bat & deltaModern cat replacement with syntax highlighting (bat) and a superior git diff viewer (delta).[4 sections]fdFast find replacement written in Rust. Searches files by name, extension, or type, respecting .gitignore.[3 sections]lazygit & lazydockerTerminal UIs for git and Docker. Manage branches, commits, containers, and images without remembering commands.[4 sections]tldr & cheatCommunity-driven simplified man pages (tldr) and personal cheat sheets (cheat). Learn CLI commands faster.

Container / K8s(2)

[4 sections]Podman & kindDaemonless container engine (Podman) and local Kubernetes clusters in Docker containers (kind).[5 sections]MinikubeLocal Kubernetes cluster on any platform. Supports VM, Docker, and bare-metal drivers.

Database Clients(2)

[4 sections]psql & pgcliPostgreSQL CLI clients. psql is the official client with \d commands; pgcli adds auto-completion and syntax highlighting.[5 sections]DBeaverUniversal database GUI tool supporting 80+ databases with SQL editor, ER diagrams, and data export.

Open Source(1)

[9 sections]gh — GitHub CLIGitHub from the command line. Manage repos, PRs, issues, CI, reviews, and releases without leaving your terminal.

Developer Profile(1)

[6 sections]GitHub Profile README KitTools to build a professional GitHub profile README: dynamic stats cards, badges, metrics, trophies, and contribution visualizations.