Contributing to a great open-source library is the best way to establish your portfolio and to join an amazing community.

I've compiled 31 open-source libraries and some good first issues to help boost your journey.

DON'T FORGET TO STAR & SUPPORT THESE 🌟

AI Favorites🦾:

1. CopilotKit - In-app AI chatbots and AI Textareas

Open-source platform for integrating key AI features into react apps using two react components.

CopilotPortal: in-app AI chatbots that can "see" the current app state and take actions.
CopilotTextarea: AI-powered replacement. With autocomplete, insertions and generations.

Good First Issue:

Gracefully fail if CopilotProvider is omitted 


The bug:

Virtually every CopilotKit functionality depends on a CopilotContext provided by the CopilotProvider. e.g. CopilotTextarea autocompletions, chatbot, etc. 
However when a CopilotProvider does not wrap the component, functionality fails silently.  


To Reproduce   

1. Omit <CopilotProvider>...</CopilotProvider> 
2. trigger useMakeCopilotReadable, useMakeCopilotActionable, CopilotTextarea, CopilotSidebarUIProvider 
3. See how functionality does not work, but no error is emitted 

Expected behavior An error is emitted, with clear description of the likely core issue and how to resolve it (namely, wrap the app in a CopilotProvider). Point to docs.

Star CopilotKit ⭐️

2.PortKeyAI

Portkey-AI / gateway

A Blazing Fast AI Gateway. Route to 100+ LLMs with 1 fast & friendly API.

3.Pezzo.ai

pezzolabs / pezzo

🕹️ Open-source, developer-first LLMOps platform designed to streamline prompt design, version management, instant delivery, collaboration, troubleshooting, observability and more.

4.OpenVoice

myshell-ai / OpenVoice

Instant voice cloning by MyShell.

5.LLMCourse

mlabonne / llm-course

Course to get into Large Language Models (LLMs) with roadmaps and Colab notebooks.

Cloud & Database☁️

6. Winglang - Cloud Oriented Programming Language

Wing is a programming language for cloud apps.

It combines code for cloud infrastructure and applications, making cloud service development easier.

Wing's unique execution model and testing simulator help build and deploy cloud apps efficiently.

Good First Issue:

Support Array.sort() method

Feature Spec:

let arr: MutArray<num>=[2, 1, 3, 9, 6, 4]; 
arr.sort(); 
log("${arr}");  // it should print sorted array in ascending order, eg: [1, 2, 3, 4, 6, 9] 

Component:
Wing SDK  

Community Notes: 

If you are interested to work on this issue, please leave a comment. If this issue is labeled needs-discussion, it means the spec has not been finalized yet. Please reach out on the #dev channel in the Wing Slack.

Star Winglang ⭐️

7. StackQL - SQL-Based Cloud Resource Management

StackQL provides a unique SQL-based framework to manage and query cloud resources and APIs across different providers like Google, AWS, Azure, and more.

It simplifies cloud operations by allowing SQL-like commands for provisioning and operating cloud services.

This makes StackQL a versatile tool for cloud resource management and interaction, especially for those familiar with SQL.

Good First Issue:

Add unit testing to package writer

Add unit testing for internal/stackql/writer .

Description: 
add implementation for testing sql_writer.go
modify sql_writer.go by adding function for dependency injection
add implementation for testing generic.go
modify generic.go by adding variable for patching GetDB function
modify entryutil.go to adjust sql_writer.go

Star StackSQL ⭐️

8.Appwrite

appwrite / appwrite

Build like a team of hundreds_

9.Supabase

supabase / supabase

The open source Firebase alternative.

10.SuperDuperDB

SuperDuperDB / superduperdb

🔮 SuperDuperDB: Bring AI to your database! Build, deploy and manage any AI application directly with your existing data infrastructure, without moving your data. Including streaming inference, scalable model training and vector search.

Dev Utilities🛠️

11. Firecamp - Multi-Protocol API Collaboration Tool

Firecamp is a versatile API development tool, supporting protocols like Rest, GraphQL, and WebSockets.

It simplifies designing, testing, and documenting APIs, and enhances team collaboration on API projects.

Good First Issue:

Help out with Manual Testing of Firecamp

Responsibilities:
Executing test cases and reporting results
Logging bugs and issues in the Github issue tracker
Providing feedback on usability and the testing process
Suggesting improvements to tests and expanding test coverage.
Benefits

Benefits for your testing profile and career:

Experience testing a real-world open source application
Each release will include your name with bugs fixes.
Exposure to different types of testing such as UI, API, integration, etc
Opportunity to have your contributions and feedback incorporated into the product
Collaborating with an open source community
Having your testing work visible to potential employers
Firecamp Swags (T-shirts and stickers)
Community shoutout and promotion

Star Firecamp ⭐️

12.Odigos

keyval-dev / odigos

Distributed tracing without code changes. 🚀 Instantly monitor any application using OpenTelemetry and eBPF

13.Digger

diggerhq / digger

Digger is an open source IaC orchestration tool. Digger allows you to run IaC in your existing CI pipeline ⚡️

14.Mirrord

metalbear-co / mirrord

Connect your local process and your cloud environment, and run local code in cloud conditions.

Backend⚙️

15. Cerbos - Scalable, Language-Agnostic Authorization

Cerbos offers unique, scalable solutions for implementing context-specific user permissions in applications.

Its flexible, language-agnostic approach allows for easy integration and management of complex authorization structures.

Distinctively, Cerbos simplifies the development of access control policies, making them more adaptable to various application needs.

Good First Issue:

Produce output when the rule condition is not satisfied

Currently the output block is only evaluated if the rule is actually activated (action, roles and conditions are satisfied). 
In certain situations, it's desirable to produce output when the rule is nearly activated (action and roles match but the condition is not satisfied).

In order to maintain backward compatibility, reduce noise, and to keep policy execution as fast as possible (outputs incur a tiny overhead), the proposal is to let users add an optional when section to the output block to opt into this behaviour.

    - actions: ['view']
      effect: EFFECT_ALLOW
      roles: ['user']
      condition:
        match:
          expr: timestamp(R.expiry_date) > now()
      output: 
        expr: >
          format("%d hours until expiry", (timestamp(R.expiry_date) - now()).getHours())
        when:
          cond_fail: >
            format("expired on %s", R.expiry_date)
When evaluating the above rule,

if the action, roles and condition match, output will be the result of evaluating output.expr
If the condition is not satisfied, output will be the result of evaluating output. when.cond_fail if it exists. Otherwise no output will be produced.

Star Cerbos ⭐️

16.Novu

novuhq / novu

🔥 The open-source notification infrastructure with fully functional embedded notification center 🚀🚀🚀

17.Trigger.dev

triggerdotdev / trigger.dev

✨ Trigger.dev is the open source background jobs framework for TypeScript. With features like API integrations, webhooks, scheduling and delays.

18.SuperTokens

supertokens / supertokens-core

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

19.Wazuh

wazuh / wazuh

Wazuh - The Open Source Security Platform. Unified XDR and SIEM protection for endpoints and cloud workloads.

UI/UX 🦋:

20. Flowbite - Top Library of CSS Components

One of the best and most respected libraries of UI components.

Based on utility-first CSS framework.

Easy to work with, full of important supports and templates.

Star Flowbite ⭐️
 

21.MaterialUI - Foundational React components implemented with Google's Material Design

22. SwiperUI - Respected library for implementing mobile swipe UI

23.ReactSpring - implement animations in React with realistic physics

Misc🎨

24. SwirlSearch - Multi-Source AI Data Searcher

Swirl is an AI-powered search tool that simultaneously queries multiple data sources, including databases and public data services.

It uses AI to rank results and generate insights, allowing for comprehensive searches across diverse data repositories.

Swirl simplifies searching and analyzing data from various sources in one go, making it a unique tool for data-driven insights.

Good First Issue:

Add a Connector: Yahoo search

It would help to search anything with Swirl on Yahoo effectively.

Locate and read a bit in their search API first. You might just need to make a new SearchProvider configration vs. a new Connector. Their docs should help guide you a bit in which way you might need to go.

Star SwirlSearch ⭐️

25. Wasp - Develop full-stack web apps with React & Node.js

Rapid Full-Stack Web App Development with React & Node.js.

Wasp offers a simplified approach to building modern web applications, combining React for front-end and Node.js for back-end in a cohesive framework.

Good First Issue:

Add images (or link to the example app) of auth UI helpers Wasp provides

At this point in docs (also in the tutorial if we're using it), it would be nice to add an image of UI helpers for Auth (login/signup form, Google/GitHub button, ...) so developers can immediately see what they are getting and how nice it looks.

Star Wasp ⭐️

26.Logstash

27.Snapify

For Fun🎭

28.Twitter's Algorithm

twitter / the-algorithm

Source code for Twitter's Recommendation Algorithm

29.One Billion Row Challenge

gunnarmorling / 1brc

1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

30.Book of Secret Knowledge

trimstray / the-book-of-secret-knowledge

A collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, cli/web tools and more.

31.GenAI for Beginners

microsoft / generative-ai-for-beginners

12 Lessons, Get Started Building with Generative AI 🔗 https://microsoft.github.io/generative-ai-for-beginners/