A compilation of all valid repos for Hacktoberfest 2021. A list of invalid repos can be found here and a list of repos that has historically been good but seem inactive can be found here.
Topics
Languages
| OpenGenus/cosmos | algorithms on AI, CP, crypto, quantum, and more in C, C++, Java, JS, Swift, Python, Go, and more |
| ZoranPandovski/al-go-rithms | search, sort, math, crypto, geometry, graph theory, DP, DS, and more types of algorithms in various languages |
| codedecks-in | solutions to various problems on different different online judges and interview prep sites, most repos can count towards Hacktoberfest |
| TheAlgorithms | algorithm implementations in various different languages, most repos can count towards Hacktoberfest |
| shivprime94/Data-Structure-Algorithms | various algorithms and data structures as well as solution code to some CP platforms |
| mad003/Sorting-Algos | sorting algorithms in various languages |
| hhhrrrttt222111/Patterns | patterns in various languages |
| TARANG0503/DSA-Practice | |
| CrackerSuman/Algorithms | small algorithms repository |
| DistroByte/ComfyBot | an open source multipurpose Discord bot written in Discord.js |
| awsheeshh/Kanna-Chan | multipurpose and open source Discord bot (verified) written in Discord.py |
| Alexandria/match-three-game | Candycrash clone in js, HTML and CSS with beginner-friendly environment |
| florinpop17/app-ideas | compilation of possible coding projects to make |
| Magnesiaworld/Hacktoberfest_2021 | random code in Python, C++, HTML, CSS |
| vinitshahdeo/HBD | creative ways to wish someone happy birthday with code |
| Coder-forfun/Hactoberfest-accepted | algorithms and projects in any language |
| Abhinandan323/Programming-notes | various different algorithms and small projects in C++, C, Java, and Python |
| 5h0bh4nk/FizzBuzz-Hacktoberfest-2021 | fizzbuzz is various different languages |
| zeel-codder/Recursion-Hub | recursive solutions to any problem in any language |
| many-passwords | aimts to collect default passwords of various devices and sites |
| Mimic-Tools/name-generation | character name generation |
| Learn-Write-Repeat/Hacktoberfest-Contribution | contribution can be from any topic like your mini-project, algorithms, solution to coding problem, etc. |
| PraSarOG/Hacktoberfest-21 | any program in any programming language |
| wafarifki/Hacktoberfest_2021 | any program in any programming language |
| eraaxit/emoticon-suggestor | suggests emojis based on a word (not machine learning) |
| MarcosDaNight/Hacktoberfest-Baby-Steps | hello word, funny code, or any code in any language |
| ishkapoor2000/PRACTICE_HACKTOBERFEST2021 | code (or not code, ie. content or designs) in Arduino, miscellaneous programming things, and machine learning |
| bigyanic/Hacktoberfest-Simple-Practice-Programmes | simple programs in various languages (has suggestions of program ideas) |
| Htrap1862/Hacktoberfest2021 | commit poems, programs, literally anything |
| varunherlekar/lets-do-it | Live HTML, CSS & Js Todo web-app |
| blogmaker123/Hacktoberfest | any program in any language or maintenance |
| utkarsh1311/webdevpractice | collection of simple programs created with js, HTML, CSS and more. Open for programming as well as documentation tasks. |
| vikhyatsingh123/Naruto-Shippuden | add your favorite character card from naruto |
| Ashutosh00710/github-readme-activity-graph | a Github README profile contributions graph |
| DenverCoder1/readme-typing-svg | a typing SVG for Github README profiles |
| anuraghazra/github-readme-stats | gives a Github profile summary, most used languages, repo cards, and Wakatime cards |
| DenverCoder1/github-readme-streak-stats | displays current and longest Github activity streak |
| jamesgeorge007/github-activity-readme | updates Github README to show most recent Github activity |
| gautamkrishnar/blog-post-workflow | updates Github README to show latest blog posts from various sources |
| bobbyiliev/101-linux-commands-ebook | a guidebook for Linux commands |
| gdscjgec/ML-Gallery | various classification, regression, clustering, neural networks, and deep learning algorithms |
| academic/awesome-datascience | collection of data science |
| public-apis/public-apis | a list of public APIs |
| vinitshahdeo/Hacktoberfest2021 | a guide on contributing to open source as well as a list of beginner friendly projects |
| swapagarwal/swag-for-dev | a list of swag that developers can get |
| EbookFoundation/free-programming-books | compilation of programming e-books |
| sdmg15/Best-websites-a-programmer-should-visit | compilation of programming websites |
| kaydee001/learn-programming-resources | compilation of learning to program resources |
| abhishek-dhnma/Vinent-Van-VsCode-theme | a VSCode theme |
| musm/min-tomorrow-theme |
| avinash201199/stopwatch | stopwatch with HTML, CSS, JS |
| mykartadmin/TailwindReactBoilerplate | startup setup for tailwind and react |
| siddhi-244/Embellish | snippets of HTML, CSS, JS things |
| mrbyyn/simple-web-project-collection | various web projects |
| sonaiX69/dfgdfnfdgndfbdfbsrdbddrhf | cool website styling trick |
| anurag-crypto/Awesome-web-components | fun frontend stuff |
| Coders-Evoke-Community/Amazing-Frontend_Templates | coding frontend templates using HTML, CSS, JS. |
| charukalyani/netflix_clone | a Netflix clone created with CodeSandbox |
| shubham-2611/Hacker-News-Clone | clone of HackerNews using the HackerNews API and React |
| saloni-15/Heel2Toe | web develop using html, css, JS |
| divyanshugarg36/c-programs | various programs in C |
| amritansh22/Data-Structures-and-Algorithms-in-cpp | self explanatory title |
| iamAnki/CPP-Programs- | C++ algorithms/programs |
| fauziajalal/city-guessing-game | A game in which computer will select a random Indian city name and you have to guess next city name based on the last letter of current city name. |
| kowainik/learn4haskell | learn Haskell with pull requests |
| kokonior/HTML-Projects | various small HTML projects |
| RitwikSachdeva/csneeds | various projects to contribute |
| Linux-User-Group/hacktoberfest2021-HTML | good repository to learn |
| iluwatar/java-design-patterns | shows Java's design patterns |
| ashwiniswag/Personal-Diary | Java Android diary app |
| jvm-coder/Java_Programs | various Java programs |
| atulanand26/myclassroom | work on project to make that more useful |
| decode11/decode-1-rep | decoding repo to contribute |
| DistroByte/ComfyBot | an open source multipurpose Discord bot written in Discord.js |
| kokonior/Javascript-Projects | various projects and code snippets in JavaScript |
| kokonior/NodeJS-Projects | projects and code snippets in Node |
| pyGuru123/HackPython-21 | various different projects and algorithms in Python including web scraping, Tkinter, data analysis, and more |
| IEEE-VIT/concy-bot | a Python Discord bot |
| shashwat211/spaceShooter | classic space shooter game in Python |
| kokonior/Python-Projects | various projects and snippets of code in Python |
| HowkMii/ProgrammingProblem | solving coding and interview problems in Python |
| Chelsea31/xbox-scraper | simple web scraper to find xbox series x availability across shopping websites |
| Anjan50/Python | Various Projects and Scripts |
| LBBO/generate-web-app | |
| chankruze/mwbr | This is a very basic setup for a react app |