Showing 739 open source projects for "error"

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  • 1
    Simple Form

    Simple Form

    Forms made easy for Rails! It's tied to a simple DSL

    Simple Form is a Ruby on Rails gem that simplifies form-building by providing a clean DSL for generating HTML forms. It works alongside Rails form helpers and supports integration with Bootstrap, Tailwind, and custom markup—allowing developers to write forms quickly without compromising layout flexibility.
    Downloads: 2 This Week
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  • 2
    MLT Multimedia Framework

    MLT Multimedia Framework

    MLT Multimedia Framework

    Author, manage, and run multitrack audio/video compositions. The engine of a non-linear video editor that can be used in all sorts of apps, not just desktop video editors. MLT is an open source multimedia framework, designed and developed for television broadcasting. It provides a toolkit for broadcasters, video editors, media players, transcoders, web streamers and many more types of applications. The functionality of the system is provided via an assortment of ready-to-use tools, XML...
    Downloads: 6 This Week
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  • 3
    SwiftFormat

    SwiftFormat

    A command-line tool and Xcode Extension for formatting Swift code

    ...Many programmers have a preferred style for formatting their code, and others seem entirely blind to the existing formatting conventions of a project. When collaborating on a project, it can be helpful to agree on a common coding style, but enforcing that manually is tedious and error-prone, and can lead to arguments if some participants take it more seriously than others. Having a tool to automatically enforce a common style eliminates those issues, and lets you focus on the behavior of the code, not its presentation.
    Downloads: 21 This Week
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  • 4
    SaaS Boilerplate

    SaaS Boilerplate

    SaaS Boilerplate built with Next.js + Tailwind CSS + Shadcn UI

    ...Packed with essential features like built-in Authentication, Multi-Tenancy with Team support, Role & Permission, Database, I18n (internationalization), Landing Page, User Dashboard, Form handling, SEO optimization, Logging, Error reporting with Sentry, Testing, Deployment, Monitoring, and User Impersonation, this SaaS template provides everything you need to get started. Designed with developers in mind, this Next.js Starter Kit uses TypeScript for type safety and integrates ESLint to maintain code quality, along with Prettier for consistent code formatting. ...
    Downloads: 8 This Week
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  • 5
    Swift Algorithms

    Swift Algorithms

    Commonly used sequence and collection algorithms for Swift

    Swift Algorithms is an open-source package of sequence and collection algorithms, along with their related types. Algorithms are powerful tools for thought because they encapsulate difficult-to-read and error-prone raw loops. The Algorithms package includes a host of powerful, generic algorithms frequently found in other popular programming languages. We hope this new package will help people embrace algorithms, improving the correctness and performance of their code. With the Algorithms package’s initial set of sequence and collection operations, you can cycle over a collection’s elements, find combinations and permutations, create a random sample, and more. ...
    Downloads: 8 This Week
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  • 6
    CliWrap

    CliWrap

    Library for interacting with command-line interfaces

    ...CliWrap is fully asynchronous and designed with immutability principles, making it well suited for modern concurrent applications. It also includes flexible mechanisms for capturing standard output and error streams, enabling advanced automation scenarios. Overall, CliWrap simplifies process orchestration in .NET applications while maintaining strong safety and performance guarantees.
    Downloads: 4 This Week
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  • 7
    Axum

    Axum

    Ergonomic and modular web framework built with Tokio, Tower

    Axum is a modern, ergonomic web framework for Rust built on top of Tokio, Hyper, and Tower. It emphasizes modularity, minimal boilerplate, and seamless middleware composition via Tower services. It uses declarative extractors for routing, strong async/await support, and integrates well with the Tokio async ecosystem.
    Downloads: 1 This Week
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  • 8
    AWS SDK for JavaScript v3

    AWS SDK for JavaScript v3

    Modularized AWS SDK for JavaScript

    The AWS SDK for JavaScript v3 is a modularized client for AWS services, enabling developers to interact with AWS APIs in web browsers and Node.js environments with improved performance and reduced bundle sizes.
    Downloads: 1 This Week
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  • 9
    mXparser

    mXparser

    Math Parser: Java, C#, C++, Kotlin, Android, and all .NET platforms

    Math Parser: Java, C#, C++, Kotlin, Android, and all .NET platforms (Nuget, Maven, CMake). Supports .NET Framework, .NET Core, .NET Standard, Xamarin, and more. Features: rich built-in library of math functions, operators, constants. Flexible in user-defined arguments, and functions. Expressions are provided as plain text. Easy to use. Well documented. MathParser.org-mXparser is an open-source mathematical expression parser and evaluator for Java and .NET, supporting complex calculations and...
    Downloads: 1 This Week
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  • 10
    Lucky

    Lucky

    A full-featured Crystal web framework that catches bugs for you

    ...The classes map the routes and parameters it handles to a response block. Lucky can generate these classes for you with ’lucky gen.action`. Using a class per action provides very solid automatic error detection, as well as the generation of routing, path, and link helpers and methods.
    Downloads: 7 This Week
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  • 11
    Swift

    Swift

    The Swift Programming Language

    Swift is a high-performance, general-purpose programming language built with a modern approach to safety, performance, and software design patterns. With a clean and modern syntax, it offers seamless access to existing C and Objective-C code and frameworks. Swift makes it easy to write software that is incredibly fast and safe by design. It comes packaged with core features like flow control, data structures and functions, with high-level constructs like objects, protocols, closures, and...
    Downloads: 7 This Week
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  • 12
    Retrofit

    Retrofit

    Type-safe HTTP client for Android and Java by Square

    Retrofit is a type-safe HTTP client for Android and Java developed by Square. It allows developers to define REST API calls using simple interface annotations, automatically converting responses into Java objects using converters like Gson or Moshi. Retrofit greatly simplifies network requests by abstracting away boilerplate code, making API integration in mobile and Java apps seamless and maintainable.
    Downloads: 2 This Week
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  • 13
    ArkType

    ArkType

    TypeScript's 1:1 validator, optimized from editor to runtime

    ArkType is a high-performance runtime type validation library for TypeScript. It offers a 1:1 validator optimized from editor to runtime, enabling developers to define and enforce complex type constraints seamlessly.​
    Downloads: 0 This Week
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  • 14
    Model Context Protocol Python SDK

    Model Context Protocol Python SDK

    The official Python SDK for Model Context Protocol servers and clients

    The Python SDK for Model Context Protocol provides utilities to interact with the protocol, enabling seamless communication with AI models.
    Downloads: 0 This Week
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  • 15
    ty

    ty

    An extremely fast Python type checker and language server

    ty is an extremely fast Python type checker and language server built in Rust, designed to provide highly responsive and accurate static analysis for modern Python development workflows. It is positioned as a next-generation alternative to tools such as mypy and Pyright, offering significantly faster performance through incremental analysis and optimized execution. The tool is designed from the ground up to power editor integrations, enabling real-time feedback as developers write code with...
    Downloads: 6 This Week
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  • 16
    mo - Monads

    mo - Monads

    Monads and popular FP abstractions, powered by Go 1.18+ Generics

    ...By leveraging generics introduced in Go 1.18+, the library provides strong type safety without relying on reflection or code generation. It is particularly useful for managing nullable values, error propagation, asynchronous workflows, and functional pipelines in a predictable way. The design draws inspiration from languages like Scala, Rust, and TypeScript FP libraries, making it familiar to developers with functional backgrounds. Overall, samber/mo enables a more declarative and expressive programming style in Go while remaining lightweight and dependency-free.
    Downloads: 4 This Week
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  • 17
    FluentValidation

    FluentValidation

    .NET validation library for building strongly-typed validation rules

    FluentValidation is a popular .NET library offering a fluent, expressive interface for building strongly-typed validation rules. It supports modern .NET runtimes including .NET 8+, and integrates smoothly into .NET Core, Blazor, and other ecosystems. FluentValidation has adopted the Code of Conduct defined by the Contributor Covenant to clarify expected behavior in our community. For more information see the .NET Foundation Code of Conduct. A validation library for .NET that uses a fluent...
    Downloads: 4 This Week
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  • 18
    express-validator

    express-validator

    An express.js middleware for validator.js

    express-validator is a set of express.js middlewares that wraps validator.js validator and sanitizer functions. It's recommended that you have basic knowledge of the express.js module before you go on with this guide. Sometimes, receiving input in a HTTP request isn't only about making sure that the data is in the right format, but also that it is free of noise. validator.js provides a handful of sanitizers that can be used to take care of the data that comes in. Although express-validator...
    Downloads: 3 This Week
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  • 19
    FS2

    FS2

    Compositional, streaming I/O library for Scala

    FS2 (“Functional Streams for Scala”) is a purely functional, effectful abstraction for stream processing on the JVM. Built on Cats Effect, it enables compositional resource-safe streaming workflows with robust error handling, back-pressure, pull/push semantics, and support for concurrent and interruptible pipelines.
    Downloads: 1 This Week
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  • 20
    Symfony Dotenv

    Symfony Dotenv

    Registers environment variables from a .env file

    Symfony Dotenv is a PHP library that helps manage environment variables by loading them from a .env file into the environment. It simplifies configuration management in local development environments by allowing developers to store sensitive information and configuration settings in a separate, easy-to-manage file. Dotenv is particularly useful when working with Symfony applications but can also be used in any PHP project.
    Downloads: 1 This Week
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  • 21
    QR Code generator library

    QR Code generator library

    High-quality QR Code generator library in Java, TypeScript/JavaScript

    This project aims to be the best, clearest library for generating QR Codes. My primary goals are flexible options and absolute correctness. The secondary goals are compact implementation size and good documentation comments. This work is an independent implementation based on reading the official ISO specification documents. I believe that my library has a more intuitive API and shorter code length than competing libraries out there. The library is designed first in Java and then ported to...
    Downloads: 11 This Week
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  • 22
    updates

    updates

    Flexible npm dependency update tool

    ...If an option has an optional pkg argument but none is given, the option will be applied to all packages instead. The JSON output is an object with possible properties results, message and error.
    Downloads: 1 This Week
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  • 23
    sbt

    sbt

    sbt, the interactive build tool

    ...One of the examples of a Scala-specific feature is the ability to cross-build your project against multiple Scala versions. build.sbt is a Scala-based DSL to express parallel processing task graph. Typos in build.sbt will be caught as a compilation error. With Zinc incremental compiler and file watch (~), edit-compile-test loop is fast and incremental. Adding support for new tasks and platforms (like Scala.js) is as easy as writing build.sbt. Join 100+ community-maintained plugins to share and reuse sbt tasks. Continuous compilation and testing with triggered execution. Supports mixed Scala/Java projects. ...
    Downloads: 8 This Week
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  • 24
    Logrus

    Logrus

    Structured, pluggable logging for Go

    Logrus is a structured, pluggable logger for Go (golang) that is completely API compatible with the standard library logger. It encourages careful, structured logging through much more discoverable logging fields rather than long, unparseable error messages. This produces much more useful logging messages. Logrus is currently in maintenance mode, which means that new features will no longer be introduced. This does not mean however, that it is dead. It continues to be maintained for security, backwards compatibility and performance, so you can still rely on it for structured logging in Golang. ...
    Downloads: 2 This Week
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  • 25
    Arrow

    Arrow

    Functional companion to Kotlin's Standard Library

    Arrow Core includes types such as Either, Validated and many extensions to Iterable that can be used when implementing error handling patterns. Core also includes the base continuation effects system, which includes patterns to remove callbacks and enables controlled effects in direct syntax. Some applications of the effect system reduce boilerplate and enable direct syntax including monad comprehensions and computation expressions. Arrow Fx is a next-generation Typed FP Effects Library that makes tracked effectful programming first class in Kotlin built on top of Kotlin’s suspend system and KotlinX Coroutines Arrow Fx is a functional companion to KotlinX Coroutines augmenting its api with well known functional operators making it easier to compose async and concurrent programs. ...
    Downloads: 7 This Week
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