Open-source alternatives to Handcalcs

This repository is a collection of machine learning theory notes and mathematical references. It serves as a structured study guide containing conceptual explanations and handwritten mathematical derivations of the foundations and core formulas used in the field. The content focuses on the mathematical derivation of algorithms, breaking down the step-by-step logic and proofs required to understand their inner workings. These academic records utilize typesetting for precise scientific notation and mathematical documentation. The materials are organized as a markdown-based study guide with a t

Flutter-html is a markup rendering engine and UI component library that parses static HTML strings and CSS styles into native user interface widgets for cross-platform mobile and desktop applications. Its core architecture manages media controllers, style cascade engines, markup-to-widget translation, and native platform view embedding through modular extension packages. The library supports content styling using cascading style sheet rules, custom element rendering, data tables, mathematical equation rendering, vector graphics, and embedded frames or web browser components. It includes mult

This project is a comprehensive Lisp AI implementation library that provides reference implementations for various artificial intelligence paradigms and symbolic algorithms. It functions as a multi-purpose toolkit containing a logic programming engine, a natural language processing suite, and a symbolic mathematics toolkit. The library is distinguished by its diverse architectural frameworks, including a Prolog-style execution engine that uses unification and goal-driven backtracking, and a system for simulating human decision-making through expert system shells and certainty factors. It also

pysheeet is a technical reference library providing a curated collection of code snippets and implementation patterns for advanced Python development, system integration, and high-performance computing. It serves as a comprehensive guide for implementing low-level network programming, native C extensions, and asynchronous and concurrent programming. The project provides specialized frameworks for the development and deployment of large language models, including tools for distributed GPU inference and high-performance serving. It also includes detailed patterns for high-performance computing

Python-Guide-CN is a Chinese translation of a comprehensive guide to idiomatic Python programming and software development. It serves as a curated programming tutorial and ecosystem reference, providing a structured path for learning Python syntax, standard libraries, and professional coding patterns. The project distinguishes itself by offering detailed instructions for setting up development environments across Windows, macOS, and Linux. It specifically focuses on the selection of interpreters and the management of virtual environments to ensure a consistent workspace. The guide covers a b

udlbook is a deep learning educational repository and a collection of interactive learning notebooks designed for studying neural network architectures. It serves as a digital repository of formatted mathematical equations and guided examples for learning deep learning concepts. The project provides a mathematical reference for supervised learning and neural network theory using LaTeX rendering. It includes interactive technical documentation and executable notebooks covering gradients, convolutions, and transformers. The system manages educational materials through a file-system based organ

This project is a machine learning reference guide and condensed cheat sheet providing a curated collection of classical equations, diagrams, and core concepts. It serves as a technical interview study guide focused on the mathematical foundations and theoretical principles required for machine learning engineering roles. The resource facilitates the review of algorithm theory and data science interview preparation by offering a centralized location to recall fundamental machine learning patterns and mathematical proofs. It functions as a study guide for academic exams and a quick-reference t

Streamdown is a streaming markdown renderer for React that transforms incoming markdown text into sanitized HTML in real time, handling incomplete blocks as they arrive. It parses GitHub-Flavored Markdown syntax including tables, task lists, and footnotes, and renders LaTeX math expressions using KaTeX, Mermaid diagrams as interactive SVGs, and code blocks with Shiki-based syntax highlighting supporting over 200 languages with dual light and dark themes. The renderer includes an XSS-safe HTML sanitizer that strips dangerous tags and validates URLs to prevent injection attacks. What distinguis

LearnPython is a programming tutorial consisting of a collection of practical code examples used to demonstrate Python language features and programming patterns. It serves as a comprehensive learning resource that implements core language concepts through functional code. The project provides specialized guides and samples covering several key domains. These include asynchronous network programming with event loops and coroutines, data visualization using numerical datasets for 2D and 3D plots, and web scraping for fetching content and automating login flows. It also features instructions on

This project is a mathematics programming pattern library and translation guide designed to map academic mathematical symbols and formulas into programmable logic. It serves as a reference for converting complex notations into software implementations. The resource provides mapping guides for translating calculus, linear algebra, and set theory into iterative loops, functional code, and boolean expressions. It includes specific patterns for implementing piecewise functions, matrix operations, and standard mathematical operators using conditional logic and built-in language functions. The lib

Gophernotes is a backend implementation of the Jupyter kernel protocol and an interactive runtime that enables the execution of Go language code within notebook environments. It serves as a Go language execution engine, allowing users to integrate Go into polyglot notebooks such as Jupyter and nteract. The project supports the creation of documents that combine executable source code with rich media. It maps internal data types to various formats, including HTML, JSON, LaTeX, PDF, and images, to provide visual representations of execution results. The system covers a range of capabilities in

This project is a machine learning educational resource and study site focused on the theoretical foundations and mathematical derivations of machine learning algorithms. It serves as a study guide for mastering the linear algebra, calculus, and proofs required for predictive modeling. The site functions as a markdown documentation portal and static site generator, converting formatted text and LaTeX formulas into a structured web interface. It utilizes a typesetting engine to render complex academic derivations and mathematical equations clearly within the browser. The platform includes a r

Editor.md is an embeddable Markdown editor component for web applications that provides a real-time, dual-pane live preview alongside the raw source as the user types. It is designed as a plugin-based Markdown editor with a plugin architecture for extending functionality through custom modules, and it supports rendering LaTeX mathematical expressions using KaTeX as well as converting flowchart and sequence diagram syntax into visual diagrams within the preview. The editor distinguishes itself through its plugin-based extension system, which allows loading additional functionality through exte

Beautiful and accessible math in all browsers

This project is a website theme for Hugo designed to transform Markdown files into professional academic portfolios, including CVs and publication lists. It functions as a static site template and portfolio builder, enabling the creation of researcher profiles and technical blogs. The framework includes a specialized publication manager that automatically generates individual research pages and citations by importing BibTeX files or DOI references. It also features a dedicated LaTeX mathematics renderer to display technical notation and equations across the site. The system supports a broad

Cling is an interactive C++ interpreter and read-eval-print loop that allows for the execution of C++ code in real time. It provides an interactive environment where statements can be evaluated immediately, bypassing the manual compilation and linking cycles typically required for the language. The system functions as a Jupyter C++ kernel, enabling cell-based development and visualization within notebook interfaces. It also supports the loading and execution of external source files within an active session. The environment includes capabilities for just-in-time debugging and profiling by em

Resilience4j is a fault tolerance library for Java 8 applications designed to handle failures in distributed systems. It provides a comprehensive suite of resilience patterns including resource isolation, request throttling, retries, and timeouts. The project implements specific stability mechanisms such as circuit breakers to prevent cascading failures, bulkheads for system resource isolation, and rate limiters to cap execution rates. It also includes a retry framework with backoff policies and timeout enforcement to manage transient faults and maximum execution durations. Additional capabi

Tenacity is a Python retry library and fault tolerance framework designed to automatically re-execute failing functions based on custom conditions, wait intervals, and stop criteria. It provides a mechanism to apply retry logic to both synchronous functions and asynchronous coroutines. The library implements exponential backoff to increase delays between retries, helping to manage transient network failures and prevent the overloading of services. Its capabilities cover the definition of retry conditions based on exception types or return values, as well as the enforcement of duration limits

This project is a comprehensive library of practical Python code examples and patterns. It provides a collection of scripts and snippets designed to demonstrate a wide range of programming tasks, from basic syntax to advanced implementation patterns. The repository focuses on several core domains, including the implementation of concurrency and multithreading examples, data analysis snippets for cleaning and manipulating tabular data, and various data visualization examples. It also covers automation scripts for file system management and a variety of general programming patterns. Additional

This project is a comprehensive guide and resource collection for academic writing, focused on LaTeX typesetting and the production of professional research papers. It serves as a manual for refining formal prose, standardizing mathematical notation, and implementing scientific document templates. The project provides specific instructions for managing bibliographies and citations across different academic styles. It establishes standards for typesetting scalars, vectors, and matrices to ensure consistency in complex formulas, and offers guidance on replacing informal language with precise ac

Typst is a programmable, markup-based typesetting engine designed for professional document creation. It functions as a scriptable publishing toolchain that transforms plain text and code into complex, paginated outputs. By utilizing a high-performance compiler, the system automates document assembly, mathematical rendering, and dynamic content generation, providing a unified workflow for academic and technical authoring. The engine distinguishes itself through a declarative layout framework that uses cascading rules to manage document structure and visual styling. Unlike traditional systems,

Gemini Voyager is a browser-based toolkit designed to enhance the interface and workflow of large language model web applications. It serves as a conversation manager, an output renderer, and a prompt library manager, allowing users to customize the layout and functionality of AI chat interfaces. The project distinguishes itself through advanced content handling, such as removing image watermarks by reversing alpha blending to restore original pixels. It also provides specialized rendering for LaTeX mathematical formulas and Mermaid diagrams, alongside tools to fix broken Markdown formatting

This project is a responsive Jekyll blog theme and static site template designed as a technical blogging framework. It converts markdown content into a professional personal blog with integrated support for social profile management. The template is configured as a progressive web app, providing offline access and an app-like experience for visitors. It specifically caters to technical documentation by supporting the rendering of mathematical notation, formatted code snippets, and embedded presentations. The site includes capabilities for reader engagement through discussion system integrati

Pyramid is a Python web framework and WSGI toolkit designed for building web applications. It functions as a URL routing engine that maps incoming HTTP requests to specific view callables using both pattern-based routing and hierarchical resource tree traversal. The framework is distinguished by its hybrid dispatch system, allowing developers to combine regular expression URL matching with the ability to resolve requests by navigating a tree of nested objects. It implements a flexible component architecture that supports application registry management, deferred configuration execution, and t

Semantic is a Haskell-based library and command-line tool designed for polyglot source code analysis. It functions as a static program analysis framework and a polyglot abstract syntax tree parser that converts multiple programming languages into structured syntax trees based on grammar definitions. The system distinguishes itself through a semantic code comparison engine that detects structural and meaningful changes between code versions rather than relying on textual differences. It further enables analysis across different programming syntaxes by translating surface languages into a unifi

Hedgehog Lab is a browser-based scientific computing environment designed for executing numerical analysis, matrix operations, and symbolic computation directly within a web browser. It functions as a native engine for algebraic manipulation and equation solving, allowing users to perform complex mathematical tasks without requiring external server-side infrastructure or software installations. The platform distinguishes itself by leveraging hardware acceleration to process large-scale linear algebra and matrix calculations. It integrates a symbolic engine that parses mathematical expressions

Qira is a runtime analysis tool and interactive binary debugger designed for the QEMU emulator. It functions as a binary execution tracer that records a full timeline of instruction invocations and provides a system for monitoring memory operations within guest processes. The project enables the analysis of compiled binaries by tracing instruction-level execution and mapping raw memory addresses to user-defined annotations. It includes capabilities for state-snapshotting to manage execution forks, allowing the navigation of divergent logic paths and the inspection of CPU register states and s