Custom

Top 23 Custom Open-Source Projects

  1. Rocket.Chat

    The communications platform that puts data protection first.

    Project mention: Indie Hacking with Open Source Tools: Innovating on a Budget | dev.to | 2025-03-04

    Communication tools such as Mattermost and Rocket.Chat support team collaboration.

  2. Civic Auth

    Auth in Less Than 5 Minutes. Civic Auth comes with multiple SSO options, optional embedded wallets, and user management — all implemented with just a few lines of code. Start building today.

    Civic Auth logo
  3. Mattermost

    Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

    Project mention: Revolt: Open-Source Alternative to Discord | news.ycombinator.com | 2025-03-06

    Golang would have encouraged a lot more contributions, e.g. https://github.com/mattermost/mattermost (I am not affiliated with them).

  4. Jitsi Meet

    Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

    Project mention: The 50 best open-source alternatives to popular SaaS software | dev.to | 2024-07-10

    GitHub: Jitsi GitHub Repository

  5. Zulip

    Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

    Project mention: Discord client that works on Win95*, Win98 and above | news.ycombinator.com | 2025-02-03

    > Because there isn't a good replacement in open source software

    https://github.com/zulip/zulip/blob/9.4/LICENSE (Apache 2) and if you mean "good [hosted] replacement" https://zulip.com/for/open-source/

    It, of course, does not speak to your decentralized wishlist but I'm sure they'd welcome an issue describing your goals

  6. unleashed-firmware

    Flipper Zero Unleashed Firmware

    Project mention: Unleashed Firmware for Flipper Zero: Unlock Hidden Features and Capabilities | news.ycombinator.com | 2024-08-14
  7. ZeroNet

    ZeroNet - Decentralized websites using Bitcoin crypto and BitTorrent network

  8. CustomTkinter

    A modern and customizable python UI-library based on Tkinter

  9. CodeRabbit

    CodeRabbit: AI Code Reviews for Developers. Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.

    CodeRabbit logo
  10. Element

    A glossy Matrix collaboration client for the web.

    Project mention: The Home Server Journey - 4: Enter The Matrix | dev.to | 2024-09-20

    With your instance running, you can now use Matrix clients [that support registration tokens] like Element or Nheko to register your user, login and have fun!

  11. Lets-Chat

    Self-hosted chat app for small teams

  12. Tox

    The future of online communications.

    Project mention: Discord has been using ML to determine the gender and age of some of its users | news.ycombinator.com | 2024-05-13

    I'm a big fan of Matrix, and run a small homeserver for my family in friends. But if you really want to explore the frontiers peer to peer seems really intriguing because you don't need any server. https://tox.chat/ just to name one.

  13. berty

    Berty is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network

    Project mention: The Protesters' Guide to Smartphone Security | news.ycombinator.com | 2025-01-26

    Depending upon which OS are on. If Android - Briar is the most famous and obvious choice. On iOS? There are not any options really but wasn't any usable one around a year back the last I had checked.

    On iOS there are not many options for P2P w/o Internet (I assume that is what you meant - otherwise if you want P2P over Internet then there are some options although not really "truly" P2P of course - and of course if Internet is shut down or overwhelmed then it will be down). There's https://github.com/berty/berty (the last time I tried it was crashing incessantly but it might have improved). I do not know of anything else really (there might be few but I am not sure).

  14. ZFPlayer

    Support customization of any player SDK and control layer(支持定制任何播放器SDK和控制层)

  15. Mumble

    Mumble is an open-source, low-latency, high quality voice chat software.

    Project mention: Mumble: An AI app with hands-free journaling and mood detection | news.ycombinator.com | 2024-10-30

    Kind of a bad name given the existence of https://www.mumble.info/

    Which is a large OSS voice server

  16. PyQt-Fluent-Widgets

    A fluent design widgets library based on C++ Qt/PyQt/PySide. Make Qt Great Again.

  17. Rallly

    Rallly is an open-source scheduling and collaboration tool designed to make organizing events and meetings easier.

    Project mention: Rallly: Open-source (AGPL) scheduling tool for organizing events and meetings | news.ycombinator.com | 2025-04-16
  18. OverlayScrollbars

    A javascript scrollbar plugin that hides the native scrollbars, provides custom styleable overlay scrollbars, and preserves the native functionality and feel.

  19. email-templates

    Create, preview (browser/iOS Simulator), and send custom email templates for Node.js. Made for @forwardemail, @ladjs, @cabinjs, @spamscanner, and @breejs.

  20. Persei

    Animated top menu for UITableView / UICollectionView / UIScrollView written in Swift

  21. mini-graph-card

    Minimalistic graph card for Home Assistant Lovelace UI

  22. ShapeOfView

    Give a custom shape to any android view, Material Design 2 ready

  23. TextBelt

    Free API for outgoing SMS

    Project mention: Show HN: I built a tool that texts you if your server goes down | news.ycombinator.com | 2025-04-20

    > I find these kinds notifications to provide more false positives than correctly detecting downtime

    There are services like Textbelt that leave the trigger mechanisms all up to you and your local tools:

    https://textbelt.com/

  24. Jitsi Video Bridge

    Jitsi Videobridge is a WebRTC compatible video router or SFU that lets build highly scalable video conferencing infrastructure (i.e., up to hundreds of conferences per server).

  25. Kandan

    Kandan is an Open Source Alternative to HipChat

  26. InfluxDB

    InfluxDB high-performance time series database. Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.

    InfluxDB logo
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).

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Index

What are some of the best open-source Custom projects? This list will help you:

# Project Stars
1 Rocket.Chat 42,498
2 Mattermost 32,326
3 Jitsi Meet 25,254
4 Zulip 22,655
5 unleashed-firmware 19,067
6 ZeroNet 18,446
7 CustomTkinter 12,245
8 Element 11,662
9 Lets-Chat 9,802
10 Tox 8,750
11 berty 7,826
12 ZFPlayer 7,105
13 Mumble 6,797
14 PyQt-Fluent-Widgets 6,487
15 Rallly 4,191
16 OverlayScrollbars 4,070
17 email-templates 3,694
18 Persei 3,456
19 mini-graph-card 3,362
20 ShapeOfView 3,175
21 TextBelt 3,137
22 Jitsi Video Bridge 2,965
23 Kandan 2,703

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Auth in Less Than 5 Minutes
Civic Auth comes with multiple SSO options, optional embedded wallets, and user management — all implemented with just a few lines of code. Start building today.
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