Java C#

Open-source Java projects categorized as C#
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Top 13 Java C# Projects

C#

  1. ANTLR

    ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

    Project mention: How to develop code analyzer in 48 hours | dev.to | 2024-08-14

    We've chosen ANTLR v4. The tool is also written in Java, which makes it really easy to use. Over many years of development, it has started to fare very well.

  2. InfluxDB

    InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

    InfluxDB logo

  3. Apache Avro

    Apache Avro is a data serialization system.

    Project mention: Pulumi Gestalt 0.0.1 released | dev.to | 2025-03-10

    A schema.json converter for easier ingestion (likely supporting Avro and Protobuf)

  4. jreleaser

    :rocket: Release projects quickly and easily with JReleaser

    Project mention: Weekly JavaScript Roundup: Friday Links 16, January 24, 2025 | dev.to | 2025-01-23

    JReleaser - JReleaser is a powerful, flexible release automation tool for Java developers, designed to streamline the process of releasing projects across multiple platforms. Its primary goal is to simplify the creation of release assets, including JARs, native installers, Docker images, and more, while automating the publishing process to various distribution platforms like GitHub, GitLab, and Maven Central. It supports Java, Go, Node, Rust, Zig, Swift, Perl, Python, C/C++, C#, Elixir, Haskell, Ruby, Crystal, and more.

  5. Repeat

    Cross-platform mouse/keyboard record/replay and automation hotkeys/macros creation, and more advanced automation features.

  6. valkey-glide

    An open source Valkey client library that supports Valkey, and Redis open source 6.2, 7.0 and 7.2. Valkey GLIDE is designed for reliability, optimized performance, and high-availability, for Valkey and Redis OSS based applications. GLIDE is a multi language client library, written in Rust with programming language bindings, such as Java and Python

    Project mention: Redis is trying to take over the all of the OSS Redis libraries | news.ycombinator.com | 2024-11-25

  7. PS4_Tools

    Collection Of Open Source PS4 Tools all in one Library All Written in C#

  8. ikvm

    The best IKVM.NET fork ever! (by jessiepathfinder)

  9. Stream

    Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.

    Stream logo

  10. SNOMED-in-5-minutes

    Easy-to-use tutorials for accessing SNOMED APIs within 5 min using various programming languages

  11. labs

    learning based labs for Azure Cosmos DB (by AzureCosmosDB)

  12. cross_platform_crypto

    Example codes for cryptographic exchange between several platforms (Java, PHP, C#, Javascript, NodeJs, node-forge, Python, Go and Dart)

  13. Game-Of-Life-Implementations

    Conway's Game of Life implementation in various languages

  14. DFP

    Java/.NET implementation of Intel IEEE-754 compliant decimal-float library (by epam)

  15. codewars_katas

    a collection of codewars_katas

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

Java C# discussion

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Java C# related posts

  • Compiling Java into Native Binaries with Graal and Mill

    4 projects | news.ycombinator.com | 1 Feb 2025

  • How to Use the Foreign Function API in Java 22 to Call C Libraries

    11 projects | news.ycombinator.com | 8 May 2024

  • Open Table Formats Such as Apache Iceberg Are Inevitable for Analytical Data

    1 project | news.ycombinator.com | 18 Jan 2024

  • Generating Avro Schemas from Go types

    4 projects | dev.to | 14 Jan 2024

  • It's 2023. Your API should have a schema

    2 projects | /r/programming | 9 Jul 2023

  • How do you update an existing avro schema using apache avro SchemaBuilder?

    1 project | /r/codehunter | 9 Jun 2023

  • Improved Minecraft 1.12.2 performance again with another sun.misc.Unsafe rewrite

    1 project | /r/IKVM | 5 May 2023
  • A note from our sponsor - InfluxDB
    www.influxdata.com | 19 Jul 2025
    InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now. Learn more →

Index

What are some of the best open-source C# projects in Java? This list will help you:

# Project Stars
1 ANTLR 18,144
2 Apache Avro 3,115
3 jreleaser 1,141
4 Repeat 1,072
5 valkey-glide 521
6 PS4_Tools 317
7 ikvm 149
8 SNOMED-in-5-minutes 132
9 labs 82
10 cross_platform_crypto 69
11 Game-Of-Life-Implementations 55
12 DFP 30
13 codewars_katas 1

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