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Open-source alternatives to ACDSee Photo Studio Professional 2026

Projects with an open-source licence: you can inspect, modify and self-host the code.

Same categories and verticals plus the editors' list, in an independent order. Partners and ads never change it.

  1. Blender

    Blender Foundation

    87

    3D creation suite

    Open source 80 WindowsLinuxmacOS
  2. APM – Agent Package Manager

    Microsoft Corporation

    84

    The package manager for AI-Native Development.

    Open source 77 Windows
  3. Intelligent Terminal

    Microsoft Corporation

    84

    Intelligent Terminal is an experimental terminal with native agent integration, forked from Windows Terminal.

    Open source 77 Windows
  4. DirectX Texture Assembler

    Microsoft Corporation

    84

    Texassemble is a command-line tool from Microsoft's DirectXTex library, designed for assembling and processing texture arrays, cubemaps, volume maps, and other complex texture types.

    Open source 70 Windows
  5. DirectX Texture Converter

    Microsoft Corporation

    84

    This DirectXTex sample is an implementation of the texconv command-line texture utility from the legacy DirectX SDK utilizing DirectXTex rather than D3DX.

    Open source 70 Windows
  6. DirectX Texture Diagnostic Tool

    Microsoft Corporation

    84

    Texdiag is a diagnostic command-line tool from Microsoft's DirectXTex library, designed for analyzing and debugging texture files (e.g., DDS, PNG, TGA).

    Open source 70 Windows
  7. Magika

    Google LLC

    84

    Fast and accurate AI powered file content types detection

    Open source 60 Windows
  8. Bot Framework Composer

    Microsoft Corporation

    84

    Bot Framework Composer is an open-source, visual authoring canvas for developers and multi-disciplinary teams to design and build conversational experiences with Language Understanding and QnA Maker, and a sophisticated composition of bot replies.

    Open source 30 Windows
  9. Umbrello

    KDE e.V.

    74

    UML Modeller

    Open source 77 Windows
  10. LabPlot2

    KDE e.V.

    74

    FREE, open source and cross-platform Data Visualization and Analysis software accessible to everyone and trusted by professionals

    Open source 40 Windows
  11. libwebp

    Google LLC

    74

    We provide in the libwebp codec distribution a reference implementation for the encoder and decoder applications

    Open source 40 Windows
  12. Microsoft Promptflow

    Microsoft Corporation

    74

    Prompt flow is a suite of development tools designed to streamline the end-to-end development cycle of LLM-based AI applications, from ideation, prototyping, testing, evaluation to production deployment and monitoring.

    Open source 38 Windows
  13. GIMP

    The GIMP Team

    72

    Free professional image editing

    Open source 80 WindowsLinuxmacOS
  14. Inkscape

    Inkscape Project

    72

    Professional vector graphics (SVG)

    Open source 80 WindowsLinuxmacOS
  15. Okular

    KDE e.V.

    72

    View and annotate documents

    Open source 65 Linux
  16. New API

    Quantum Nous

    72

    新一代大模型网关与 AI 资产管理系统

    Open source 60 Windows
  17. 67

    Browse, search and analyse your past AI coding sessions

    Open source 77 macOS
  18. 67

    Configuration manager for AI coding agents

    Open source 77 macOS
  19. 67

    Desktop app for GPT-4 / GPT-3.5 (OpenAI API)

    Open source 77 macOS
  20. Desktop client that supports multiple LLM providers

    Open source 77 macOS
  21. 67

    Menu bar app for monitoring AI coding assistant usage quotas

    Open source 77 macOS
  22. 67

    Ghostty-based terminal with vertical tabs and notifications for AI coding agents

    Open source 77 macOS
  23. 67

    Photoshop alternative

    Open source 77 macOS
  24. Online diagram software

    Open source 77 macOS
  25. EXO
    67

    Run AI models locally across multiple devices

    Open source 77 macOS
  26. 67

    Offline voice-to-text dictation app with AI enhancement

    Open source 77 macOS
  27. 67

    3D parametric modeller

    Open source 77 macOS
  28. 67

    Open source, extensible AI agent that goes beyond code suggestions

    Open source 77 macOS
  29. 67

    Speech to text application

    Open source 77 macOS
  30. ImageGlass

    Duong Dieu Phap

    67

    A lightweight, versatile image viewer

    Open source 77 Windows