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

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  • 1
    DxWnd

    DxWnd

    Window hooker to run fullscreen programs in window and much more...

    Windows hooker - intercepts system calls to make Win32 programs run in a window, to enhance application compatibility, to enhance video modes, to stretch timing and emulate CD disk data and audio tracks. It is typically very useful to run old Windows games.
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    Downloads: 9,762 This Week
    Last Update:
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  • 2
    OpenSong

    OpenSong

    Lyric projection and chord charts for church musicians

    OpenSong is a free software application for managing chords and lyrics sheets (lead sheets), presenting lyrics (and custom slides) using a projector, and much more! Great for worship leaders and musicians!
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    Downloads: 469 This Week
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  • 3
    Mermaid

    Mermaid

    Diagram and flowchart generation from text similar to markdown

    Mermaid is a JavaScript-based diagram and flowchart generating tool that uses markdown-inspired text for fast and easy generation of diagrams and charts. Forget about using heavy tools to explain your code. Mermaid greatly simplifies documentation with its simple markdown-like script language, and offers a great range of diagram and chart options. The latest version of Mermaid comes with a number of bug fixes and enhancements, as well as a new diagram type, entity relationship diagrams. Its range of available diagrams include flowcharts, sequence diagrams, gantt diagrams and more, with new ones continuously being developed.
    Downloads: 67 This Week
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  • 4
    Chart.js

    Chart.js

    Simple yet flexible JavaScript charting for designers & developers

    Chart.js is a Javascript library that allows designers and developers to draw all kinds of charts using the HTML5 canvas element. Chart js offers a great array of simple, clean charts including animated and interactive versions. Chartjs is an easy way to include beautiful and engaging charts into your website for free.
    Downloads: 39 This Week
    Last Update:
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  • 5
    JFreeChart
    JFreeChart is a free (LGPL) chart library for the Java(tm) platform. It supports bar charts, pie charts, line charts, time series charts, scatter plots, histograms, simple Gantt charts, Pareto charts, bubble plots, dials, thermometers and more. *** JFreeChart has moved to GitHub: https://github.com/jfree/jfreechart ***
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    Downloads: 165 This Week
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  • 6
    A Python interface to the gnuplot plotting program.
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    Downloads: 94 This Week
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  • 7
    CasparCG: Pro Video & Graphics Play-Out

    CasparCG: Pro Video & Graphics Play-Out

    Pro Video & Graphics Play-Out SW, proven in 24/7 broadcasts since 2006

    Playback and record video, graphics and audio to multiple screens via DVI/HDMI/SDI in SD, HD, 2K and 4K.
    Downloads: 61 This Week
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  • 8
    LinPHA is an easy to use, multilingual, flexible photo/image archive/album/gallery written in PHP. It uses a SQL database to store information about your pictures. It comes with a HTML based installer, so you don't need experience in setting up SQL
    Downloads: 56 This Week
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  • 9
    Album Shaper strives to be the most friendly, easy to use, cross platform application for organizing, annotating, framing, enhancing, stylizing, and sharing your digital photos.
    Downloads: 44 This Week
    Last Update:
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  • 10
    softProjector
    Наша цель это создать программу которая простая в использование, но мощная в своих возможностях. Our goal is to create a program that is powerful, yet easy to use.
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    Downloads: 32 This Week
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  • 11
    ZedGraph is a class library, user control, and web control for .net, written in C#, for drawing 2D Line, Bar, and Pie Charts. It features full, detailed customization capabilities, but most options have defaults for ease of use.
    Downloads: 23 This Week
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  • 12
    PhotoFilmStrip
    PhotoFilmStrip creates movies out of your pictures in just 3 steps. First select your photos, customize the motion path and render the video. There are several output possibilities for VCD, SVCD, DVD up to FULL-HD. Creates animated slideshows.
    Downloads: 21 This Week
    Last Update:
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  • 13
    Impressive
    Impressive is a program that displays PDF presentation slides with style. Smooth alpha-blended slide transitions are provided for the sake of eye candy, but in addition to this, Impressive offers some unique tools that are very useful for presentations.
    Downloads: 23 This Week
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  • 14
    LibVNCServer/LibVNCClient are cross-platform C libraries that allow you to easily implement VNC server or client functionality in your program.
    Downloads: 23 This Week
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  • 15
    PDF Presenter
    An easy to use presentation software with focus on PDF documents. External display / projector presentations: PDF, images, text and whiteboard with annotations; intuitive user interface, optimal mouse and pen input handling.
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    Downloads: 30 This Week
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  • 16
    BDReader

    BDReader

    An e-comics reader featuring panels detection and comfortable reading

    BDReader is intended to be a comfortable comics reader. As a main feature, BDReader includes an auto panels detection on comics pages. It allows you to display the panels (or squares) of a comic page individually, in the reading order. It also offers a Preview page option, allowing you to preview each page before reading into details the different panels of the page as well as a page thumbnails view. BDReader supports classic comic book formats: CBR, CBZ, PDF (...) as well as images archives and image folders. If you like reading comics on your computer and are fed up with zooming/dezooming all time to have the right reading size, give it a try ! For a quick try: -Download and install BDReader -Launch BDReader and Open a comic file (pdf, cbr, cbz ...) -Switch to Panel mode (Navigation->Panel mode or press c) -Navigate through your comic using the left and right arrows or your mouse wheel See the Wiki for more information (any feedback appreciated)
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    Downloads: 26 This Week
    Last Update:
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  • 17
    Flow Teleprompter

    Flow Teleprompter

    A Windows first teleprompter with voice tracking and AI drafting.

    Flow is an ultra-lightweight, high-performance teleprompter for Windows built with Rust and Tauri. Designed for creators, presenters, and educators, Flow delivers a smooth, distraction-free reading surface with minimal CPU and RAM usage. Key Features: - 5 Playback Modes: Offline Voice Tracking (via local Vosk models), Word Highlight, Line-by-Line, Arrow Guide, and Continuous Smooth Scrolling. - Script Library & Manager: Save, search, organize, and switch between multiple scripts locally with quick file imports (.txt, .docx, .pdf). - Section Navigator: Break long scripts into structured milestones with live reading completion tracking. - Invisible Overlay: Keep your script visible to you while remaining invisible during screen sharing and video calls. - Real-Time Web Collaboration: Let guests edit scripts live from their browser via WebRTC (PeerJS). - Local-First Privacy: 100% offline data security, 8-language localization, and multi-monitor support.
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    Downloads: 64 This Week
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  • 18
    The Beamer class is a LaTeX class for creating presentations using a video projector. THIS PAGE IS NO LONGER MAINTAINED. Home page: https://github.com/josephwright/beamer Mailing lists: http://groups.google.com/group/beamer-class
    Downloads: 16 This Week
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  • 19
    GeSHi - Generic Syntax Highlighter for PHP. Used to highlight almost any code for the web. Nearly 150 supported languages: PHP, HTML, C and more. Styles can be changed on the fly and CSS classes can be used to reduce the amount of XHTML compliant output.
    Downloads: 11 This Week
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  • 20
    Bento

    Bento

    Bento, the office suite that fits in a file

    Bento is a local-first presentation tool packaged as a single self-contained HTML file. Each deck carries its own viewer, presenter, editor, fonts, images, charts, animations, and document data. It opens in a modern browser without an account or installer and rewrites its own embedded data when saved. The document model remains readable as plain JSON, making files portable, inspectable, and directly editable by AI agents. Bento includes morph transitions, speaker view, comments, motion paths, PDF export, and built-in interactive charts. Optional collaboration uses end-to-end encryption and a CRDT so offline edits can merge while the relay stores only ciphertext. An offline mode blocks updates and collaboration, while signed self-updates create a new file and preserve the previous copy for rollback.
    Downloads: 2 This Week
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  • 21
    libLASi is a cross-platform library that provides a C++ stream output interface for creating PostScript documents that can contain characters from any of the script and symbol blocks supported in Unicode and by the Pango layout engine.
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    Downloads: 43 This Week
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  • 22
    Time_limit

    Time_limit

    A windowed/full-screen countdown timer.

    A windowed / full-screen countdown timer. Colour and font size changes are used as warnings. Progress-bar gives a glance at the time stream. Three different modes are available: - time left; - time passed; - ordinary clock. When the time is over several possibilities are available: - to show the defined message; - to continue count the time; - to launch another application; - to close the count-down timer. Useful for speech, lecture or presentation timing. Colour / font / time limits can be changed using settings window and hot-keys. To change current time use the mouse wheel. By clicking on progress-bar, the timer mode is toggled.
    Downloads: 23 This Week
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  • 23
    PP3 creates celestial charts. It generates resolution independent sky maps of very high graphical quality. They can be used for example as illustrations in books or on web pages. Databases are included but you may use own data if you wish.
    Downloads: 11 This Week
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  • 24
    WL Show

    WL Show

    Projete louvores em sua igreja com este programa

    Wl Show, é um programa gratuito de projeção. Com ele é possível exibir sem complicações, transições, vídeos de fundo, e o que precisar para deixar o Datashow de sua igreja dinâmico e de rápido desempenho. Acesse http://svamaster.com e tenha mais informações.
    Downloads: 20 This Week
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  • 25
    OpenChords

    OpenChords

    A digital songbook for guitarists and other musicians

    OpenChords is an alternative to traditionally printed chord songbooks. If you hate filing music away after a practice or gig... this is for you. If you struggle to find your songs because you cannot remember the name of the song... this is also for you. If you wished you could just change the key of the song in the middle of a live performance... you have come to the right place. If you find any bugs or have some suggestions, feel free to email me at open.chords.app@gmail.com. If you would like the source code it has moved to github. you can access it on https://github.com/wolfyreload/OpenChords Please note that this application requires Microsoft .Net framework 4.8.1.
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    Downloads: 8 This Week
    Last Update:
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