Open Source Presentation Software
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Presentation Software
View 268 business solutionsBrowse 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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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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DeckCraft
Presentations and slide shows
DeckCraft is an open-source presentation editor written in pure Rust as a clean-room reimplementation of familiar PowerPoint workflows. It can create slide decks with masters, layouts, themes, placeholders, shapes, pictures, tables, charts, notes, comments, and custom slide sizes. Presentation tools include transitions, animations, full-screen slide shows, and reusable formatting inherited from layouts and masters. The application can open and save PowerPoint files while also maintaining its own editable project structure. Every interface action maps to a stable command that scripts and AI agents can invoke directly. Automation is available through a command-line utility, JSON control channel, and MCP server. DeckCraft runs on macOS, Windows, Linux, FreeBSD, and the browser and is currently progressing through its alpha stage. -
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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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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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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. -
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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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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. -
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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.
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FreeShow
FreeShow is a free and open-source, user-friendly presenter software
FreeShow is a free, open-source presentation application designed for churches, events, and live productions. It allows users to create and display slideshows containing song lyrics, scripture passages, images, videos, and other presentation content. The software provides a customizable editor for adjusting text formatting, visual styles, backgrounds, and slide layouts. Users can organize presentations into shows and control content during live events. It supports multiple simultaneous outputs, allowing different content layouts for audiences, stage displays, and online broadcasts. FreeShow also includes automated slide transitions, countdowns, and remote presentation controls. Its integration with MIDI, NDI, and external presentation formats makes it useful for coordinating multimedia presentations. -
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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.
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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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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
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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.
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Draw Pen
DrawPen is a simple screen annotation
DrawPen is a free, open-source screen annotation application designed for drawing directly over desktop content. It provides a transparent overlay for highlighting information during presentations, tutorials, and demonstrations. Users can draw with brushes, pens, highlighters, and geometric shapes without modifying underlying applications. The software includes text annotations, arrows, an eraser, and a laser pointer for temporary emphasis. A whiteboard mode provides an alternative surface for explaining ideas. Keyboard shortcuts allow quick switching between drawing tools and normal pointer interaction. Users can adjust drawing colors and line thickness while clearing annotations when needed. Built with Electron, DrawPen is available for Windows, macOS, and Linux. -
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Cantara
Open Source Simple Song Presentation Software
Cantara is a free, open-source song presentation application designed for churches, worship services, and group singing. It helps organizers manage hymn collections and quickly prepare lyric presentations for audiences. The software imports common song formats, including CCLI SongSelect lyric files, and generates readable presentation slides. Users can customize fonts, colors, background images, brightness, and transparency. Its multi-screen support allows presentations to be displayed on external monitors or projectors. Cantara can present lyrics in two languages simultaneously for multilingual gatherings. Presentations can be exported to PowerPoint, images, HTML, and text formats for sharing or use with other software. Built with Free Pascal and Lazarus, it runs on Windows, macOS, and Linux. -
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PHPlot
A PHP class for creating graphs, plots, charts
PHPlot is a PHP graphics class for creating charts and plots. It works with PHP5 and the PHP GD extension to produce PNG, GIF, or JPEG images. TrueType fonts (TTF) are optional, or built-in GD fonts can be used. The available plot types include: area, bars, line/points, lines, pie, points, squared, stacked-bars, and thin bar-line. Labels, tick marks, plot legend, and X/Y axes and more are all configurable. Images can be imported as a background, multiple graphs can be drawn on one image, and images can be saved to disk or returned to a browser. -
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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.
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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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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. -
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Pympress
PDF reader designed for dual-screen presentations
Pympress is a free, open-source PDF presentation viewer designed for dual-screen presentations, lectures, and public speaking. It displays slides on a projector while providing a separate presenter view with notes, upcoming slides, and timing information. The application supports embedded videos, audio, and animated GIFs through multimedia integration. Presenters can draw annotations, activate a virtual laser pointer, and navigate slides without exposing transitions to the audience. Its timing tools track presentation duration and time spent on individual slides. Additional capabilities include automatic file reloading, customizable keyboard shortcuts, and configurable presenter layouts. Pympress runs on Windows, macOS, and Linux. -
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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. -
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LibVNCServer/LibVNCClient are cross-platform C libraries that allow you to easily implement VNC server or client functionality in your program.
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oh-my-ppt
Describe what you need — a presentation, lesson, or story
Oh My PPT is a free, open-source, local-first AI presentation creator that generates editable HTML slides from natural language instructions. Users can describe a topic, upload supporting documents, or import existing PowerPoint presentations to create new slide decks. Its AI tools generate outlines, layouts, illustrations, and speaker notes using configurable language and image models. A visual editor allows users to move, resize, duplicate, and modify individual slide elements. More than 90 design styles provide reusable visual directions for different presentation types. The application supports animations, mathematical formulas, and multiple slide aspect ratios. Presentations can be exported as editable PPTX files, PDFs, images, or videos. Local project storage and version history allow users to retain control over their work. -
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reveal.js
The HTML Presentation Framework
reveal.js is a framework for creating beautiful interactive presentations using HTML. It comes with a wide range of features, including nested slides, auto-sliding, touch navigation, Markdown support, PDF export, speaker notes, theming and more. It also comes with a JavaScript API that allows you to control various other options, and a list of plugins that can be used to extend reveal.js further. reveal.js currently offers full support for any recently released version of the following browsers: Chrome, Safari, Firefox, Opera, Edge and IE10-11. It has limited support for IE9 and Firefox 3.6. For a live demonstration, visit https://revealjs.com
