In-memory vector store with multi-metric similarity search.
Filesystem state snapshots with diff comparison
Cross-platform clipboard copy and paste in one function call
Composable data transformation pipeline with lazy evaluation.
Convert between color formats: hex, RGB, HSL, HSV, CMYK, and named CSS colors
Lightweight task dependency engine with topological execution
System metrics collector for CPU, memory, disk, and network
Infer JSON schemas from sample data
Git-based changelog generator from conventional commits
Flatten nested JSON/dicts into dot-notation keys and unflatten back
Deep merge dictionaries safely with conflict resolution
Show how long each Python import takes during startup
Render data as clean ASCII/Unicode tables in the terminal with zero configuration
Generate random readable strings for various purposes
HMAC-based webhook signature generation and verification with timing-safe comparison
Convert strings between camelCase, snake_case, PascalCase, kebab-case, and more
Access and mutate deeply nested dicts using dot-notation paths
Show character-level differences between two strings with colored terminal output
Convert numbers between any base (2-62) with human-friendly APIs
Type-safe prompt template builder for LLM APIs.
Temporarily set, override, or remove environment variables with a context manager
Parse strings into Python types intelligently — booleans, numbers, dates, None, lists
LAN device discovery and TCP port scanning
Add a timeout to any function call, sync or async.
Parse and format human-readable duration strings like "2h30m" or "1 day, 3 hours"
Layered configuration loader merging env vars, files, and defaults.
Safely access nested dictionary keys without exceptions
Truncate strings intelligently without cutting words
Turn Python stack traces into cleaner, more readable output
Convert timestamps to relative time phrases like '3 hours ago'
Measure execution time of any function
Named timers for measuring multiple operations within a function or script
Remove tracking parameters from URLs
Parse, compare, bump, and validate semantic version strings
Schema-based environment variable validation with type coercion and helpful error messages
Readable JSON comparison with colorized terminal output.
Convert byte counts to human-readable strings and back, with formatting options
Automatically mask sensitive values (API keys, passwords, tokens) in logs and print output
Ensure a function runs only once, regardless of how many times it's called
Split iterables into evenly sized chunks
Resilient HTTP client with automatic retries and backoff.
Cron-like task scheduler with overlap prevention and interval support.
Compare configuration files across environments
Decorator and utilities for deprecating functions, parameters, and classes with zero boilerplate
Practical utilities for Python enums — lookup, validation, listing, and serialization
Rule-based file sorting engine with pattern matching and dry run support
Batch processing with progress tracking and error handling.
Convert bytes to human-readable file sizes and back
Decorator-based CLI framework with rich output
Dead-simple terminal spinners and progress indicators for CLI scripts
Lightweight dependency injection container for Python.
Simple feature flags with percentage rollout and user targeting.
Automatically generate CLI interfaces from function signatures and docstrings
Type-safe environment variable loading with casting and defaults.
Run multiple functions in parallel and collect results with the simplest possible API
Terminal text styling with zero dependencies and TTY detection.
Lightweight finite state machine with guards, callbacks, and visualization.
Format Python data as aligned terminal tables with no dependencies
In-memory rate limiter with sliding window, token bucket, and leaky bucket algorithms.
Enhanced CSV reader and writer with automatic type inference.
Prevent duplicate script execution using file-based locking
Debounce and throttle decorators for Python functions.
Runtime type checking decorators for function arguments
Health check endpoint builder for web applications.
Drop-in ASGI/WSGI middleware for endpoint timing
Type-safe event emitter with sync and async listener support
Simplified MQTT pub/sub wrapper with auto-reconnect
Filesystem event watcher with decorator-based callbacks
Lightweight test data generation with realistic fake values.
Lightweight in-memory cache with TTL, LRU eviction, and tag-based invalidation
URL slug generation with transliteration and uniqueness.
Lightweight web scraper with rate limiting and CSS selectors.
Structured log filtering and highlighting for terminals
Detect unused packages in requirements.txt by scanning imports
.env file parser with interpolation and multi-file support
Thread-safe singleton and multiton pattern decorators.
Drop-in structured JSON logging for Python using the stdlib logging module
Check if a port is open on a host
Email validation with syntax checking and normalization.
Minimal JWT creation and validation with HMAC and RSA signing.
Precise monetary calculations using integer cents with currency support and formatting.
Git repository statistics and commit analysis
Rust-inspired Result type for Python with pattern matching and type-safe error handling
Circuit breaker pattern for fault-tolerant service calls.
Generate realistic fake data for testing without external dependencies
Automatically detect and mask secrets in strings and dicts.
Content-hash duplicate file detection with two-pass efficiency
Cursor and offset pagination utilities for any data source.
Async retry with exponential backoff, circuit breaker, and cancellation for Python
Simplified hashing helpers for strings, files, and checksums
JSON encoder that handles datetime, Decimal, UUID, dataclasses, and sets without crashing.
Common datetime operations missing from the standard library.
Parallel map with a built-in terminal progress bar
Pretty-print and format SQL queries for debugging
Structured JSON logging with automatic context propagation.
Pre-built, tested regex patterns for common data formats.