Browse free open source Java Keyboards and projects below. Use the toggles on the left to filter open source Java Keyboards by OS, license, language, programming language, and project status.

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  • 1
    Stroke Input Method for Android

    Stroke Input Method for Android

    Android Chinese keyboard: Stroke Input Method

    This minimalist Android IME enables input of Chinese characters via stroke sequences. It supports over 28k characters (including Cantonese), offers simplified/traditional preferences, avoids ads, permissions, and telemetry, ensuring privacy and simplicity.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 2
    Hackerskeyboard

    Hackerskeyboard

    Hacker's Keyboard Termux Mod

    Hacker’s Keyboard is a full-featured Android soft keyboard offering a PC-style layout—including five rows, arrow keys, Ctrl/Esc/Tab, and punctuation—making it ideal for SSH, coding, and technical tasks.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 3
    AnySoftKeyboard

    AnySoftKeyboard

    Android (f/w 2.1+) on screen keyboard for multiple languages

    The only Android keyboard you'll ever need. Free as in speech and Free as in beer. Android (f/w 4.0.3+, API level 15+) on screen keyboard for multiple languages.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 4
    Codeboard

    Codeboard

    Codeboard App

    CodeBoard is an open‑source Android keyboard tailored for coding. It consolidates symbols, code navigation, editing shortcuts, and clipboard tools into one keyboard—eliminating constant layout switching between alphabets, numbers, and symbols.
    Downloads: 2 This Week
    Last Update:
    See Project
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  • 5
    KhmerUnicodeLayout for External Keyboard

    KhmerUnicodeLayout for External Keyboard

    Khmer Unicode Keyboard Layout for External/Physical Keyboard

    A lightweight Android tool that adds native Khmer Unicode support for external/hardware keyboards. Implements the standard NiDA layout to allow Khmer typing via USB/Bluetooth keyboards, with ongoing fixes for combining Unicode diacritics correctly.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    KryptEY

    KryptEY

    Android keyboard for secure E2EE communication

    KryptEY is a secure, privacy‑focused Android keyboard that implements the Signal Protocol (X3DH + Double Ratchet) directly in the keyboard layer. It enables end-to-end encrypted messaging within any app—without relying on external servers—ensuring that key exchanges and message encryption happen locally, maintaining Signal-level security across platforms.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    Slide Keyboard

    Slide Keyboard

    Android keyboard with a swipe input system, now with emoji support

    An Android soft keyboard offering swipe-based typing (SlideType style) enriched with emoji and symbol toggling. Designed to improve typing speed and fluidity by supporting gesture input and modern keyboard features.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 8

    StreamKB

    On-screen keyboard that highlights keys that are pressed.

    On-screen keyboard that highlights keys that are pressed. Pressing keys does nothing. Right click pops up menu to change size or select colors.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 9
    Virtual Keyboard for security web systems access
    Downloads: 2 This Week
    Last Update:
    See Project
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    All-in-one security tool helps you prevent ransomware and breaches.

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  • 10

    Alphabetical Keyboard

    Alphabetical Keyboard

    Android keyboard with keys arranged alphabetically.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Android: MaruPad

    Android: MaruPad

    Round hiragana keyboard for Android.

    Japanese hiragana keyboard for Android. It' shaped like a circle and you write by swiping towards choices. It's fast but it's not a complete Japanese keyboard. More of a proof of concept. Also a good example code if you want to make your own unconventional keyboard for Android.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12

    CodeWhisk

    Programming keyboard for Android

    CodeWhisk is an input method for Android that is designed to make programming code entry efficient (and fun!)
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    EmoticonGIFKeyboard

    EmoticonGIFKeyboard

    An advance Emoticons & GIF keyboard

    EmoticonGIFKeyboard is an embeddable Android library offering a lightweight, customizable keyboard UI for inserting emojis and GIFs into apps. It simplifies integration into messaging or social apps to enrich user input without the overhead of a full-featured IME.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Fadeboard

    Fadeboard

    Android Keyboard transforms simple letters into special characters

    FadeBoard is a niche Android keyboard that converts typed text into special Unicode characters—designed to circumvent basic text filters and content restrictions. It provides a playful tool to make messages less detectable by simplistic moderation.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15

    Flow

    Flow is an on-screen keyboard for Android devices.

    Flow is an on-screen keyboard for Android devices. It combines many features to enable exceptionally fast text input, including an optimized keyboard layout based on common patterns in English words.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16

    Greek English Keyboard Translate

    translate keystrokes typed with the wrong keyboard layout

    translate keystrokes typed with the wrong keyboard layout from english to greek and greek to english. for example: will translate "γοοδμορνινγ" to"goodmorning" and "kalhm;era" to "καλημέρα"
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Java Virtual Keyboard

    Java Virtual Keyboard

    virtual keyboard writing in java

    English: Fully in java implemented virtual keyboard, to use for some Textfields (JTextComponent's) in Java(SWING). License: BSD IDE: Netbeans German(Deutsch): Komplett in Java umgesetzte virtuelle Tastatur. Kann für beliebige Textfeld-Komponenten (JTextComponent's) in Java(SWING) eingesetzt werden. Lizenz: BSD Entwiklungsumgebung: Netbeans Russian(Русский): Виртуальная клавиатура полностью разработанная и прописанная на языке ява. Может быть использованна для любых компонентов (JTextComponent's) из библиотеки Swing. Лицензия: BSD Среда разработки: Netbeans
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    This project is a highly configurable Virtual Unicode Keyboard written in Java. You might want to use it to type some words in a foreign character set with your mouse.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    a java component which shows a xml-configurable keyboard to use on computers without a real keyboard e.g. touch screen computer
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    Koko Keyboard

    Koko Keyboard

    Implementation of a re-usable custom onscreen keyboard

    KokoKeyboard is a Java-based reusable on-screen keyboard component/library for Android. It provides developers a template to build custom IME experiences without starting from scratch—ideal for niche input needs.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Marathi / Hindi Typing
    Marathi Hindi Phonetic typing. We can type Marathi/Hindi typing as phonetic. Copy Marathi/Hindi, use any where. For any information Kindly contact nitin.tkarale@gmail.com
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    OTG Nilboard

    OTG Nilboard

    Android smartphone app to suppress the default keyboard

    An Android app that disables the default on-screen keyboard when a hardware keyboard is connected via OTG, offering a distraction-free typing experience.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    ttkb is an on-screen keyboard that helps learning how to touch type. The keys are highlighted according to the fingers which press them. The user should not by any chance look on the real keyboard. Tutorials are included to get started with touch typing.
    Downloads: 0 This Week
    Last Update:
    See Project
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