| 51 |  Thumbcache ViewerThumbcache Viewer - Extract Windows Vista, Windows 7, Windows 8, Windows 8.1, and Windows 10 thumbcache database files. | 1.0.4.0 | Open source | June 20, 2024 | — | ★ 172 |
| 52 |  openexr-viewerSimple viewer for OpenEXR images with detailed metadata probing. | 0.6.1 | Open source | December 11, 2023 | — | ★ 124 |
| 53 |  PhoXoSeeThe World's Fastest Image Viewer | 1.12.26.6 | Open source | August 21, 2026 | — | ★ 103 |
| 54 |  LeanDocRead-only viewer for Word documents | 0.2.0 | Open source | November 6, 2026 | — | 37 ↓ |
| 55 |  DopusWorXMarkdown, maths, code and CSV viewer/editor plugin for Directory Opus | 1.7.0 | Free | October 19, 2026 | — | ★ 48 |
| 56 | LLeanRowsRead-only viewer for large CSV, TSV, JSONL and log files | 0.5.0 | Open source | November 7, 2026 | — | 50 ↓ |
| 57 |  VookiImageViewerA cross-platform lightweight image viewer for a fast image preview. | 25.11.30 | Open source | December 1, 2025 | — | ★ 53 |
| 58 |  QuickImageViewerFast native Windows image viewer. | 3.2.0.452 | Open source | October 10, 2026 | — | ★ 14 |
| 59 |  Rust DICOM StationFast, robust DICOM / RT DICOM viewer in pure Rust (CT/MR volumes, RTSTRUCT, RTDOSE, RTPLAN) with a three-view MPR layout | 0.12.0 | Open source | November 3, 2026 | — | ★ 11 |
| 60 |  Gbx File DumperA little Windows application that displays the contents of the file header of mainly maps, challenges, replays, packs, blocks, objects and items used by the Nadeo game engine GameBox (.gbx, .pak, and .dds files). | 1.76.0.124 | Other licence | July 23, 2025 | — | ★ 35 |
| 61 |  Photo ViewerAn image/GIF viewer that can apply various resizing and color effects. | 0.2.5 | Open source | October 1, 2024 | — | ★ 22 |
| 62 |  IIViewerintermediate image viewer | 1.3.0 | Open source | October 25, 2026 | — | ★ 13 |
| 63 |  mendoFast and lightweight Markdown viewer | 0.5.0.0 | Open source | November 8, 2026 | — | ★ 7 |
| 64 | PPrettyMarkA lightweight, native Markdown viewer for Windows with live reload and syntax highlighting. | 1.0.0 | Open source | March 12, 2026 | — | 10 ↓ |
| 65 |  Solarxy3D model viewer, visual debugger, and validator | 0.9.0 | Open source | September 4, 2026 | — | ★ 6 |
| 66 |  ImageViewThe free and open-source image viewer for Microsoft Windows | 2.4.6 | Open source | May 29, 2021 | — | ★ 11 |
| 67 |  MDViewer+ for WindowsOffline Markdown viewer and editor for Windows | 2.2.0 | Open source | November 6, 2026 | — | ★ 5 |
| 68 |  WahlbergA cross-platform Markdown viewer built with .NET MAUI and Blazor. | 1.65.0 | Proprietary | October 23, 2026 | — | ★ 1 |
| 69 | SScholareadAI-powered Research, Insights at Your Fingertips | 1.1.89 | Proprietary | November 10, 2026 | — | — |
| 70 |  PicFetchA small multi-platform desktop app for quickly viewing and browsing images. | 1.1.11 | Open source | September 29, 2026 | — | ★ 2 |
| 71 |  mdmdviewA standalone markdown viewer for Windows with syntax highlighting and diagram support. | 1.16.0 | Open source | June 1, 2026 | — | ★ 3 |
| 72 |  pdf-nextTiny PDF, image and markdown viewer with one-second live reload | 0.19.0 | Open source | November 5, 2026 | — | ★ 1 |
| 73 | CCAD快速看图A fast DWG/DXF viewer and measurement tool | 6.5.3.105 | Proprietary | August 5, 2026 | 46.5 MB | — |
| 74 |  view2ercompare 2 images side by side | 1.0.0 | Open source | September 6, 2024 | — | ★ 3 |
| 75 | BBluebeam Revu 21Mark up PDFs, build custom workflows and collaborate in real time from anywhere. | 21.11.0 | Proprietary | September 1, 2026 | 2.59 GB | — |
| 76 | CCADReaderA fast DWG/DXF viewer and measurement tool | 3.8.2.29 | Proprietary | October 9, 2026 | 47.0 MB | — |
| 77 | SSante DICOM Viewer LiteSante DICOM Viewer Lite is a high quality, full-featured, completely free 2D/3D DICOM Viewer. | 5.0.9 | Free | August 20, 2025 | — | — |
| 78 | FFile Viewer PlusOpen dozens of document formats, such as PDFs and Microsoft Office files, including Word, Excel, and PowerPoint documents. | 6.0.2 | Proprietary | July 30, 2025 | 175.8 MB | — |
| 79 | IIrfanView PlugInsAdditional plugins for IrfanView, an image viewer, editor, organiser and converter program | 4.76 | Free | October 8, 2026 | 32.7 MB | — |
| 80 | XXnViewBest Photo Viewer, Image Resizer & Batch Converter for Windows. | 2.52.7 | Proprietary | September 23, 2026 | 22.3 MB | — |
| 81 |  FICture2Fast and lightweight image viewer with DirectX rendering | 1.7.224.0 | Proprietary | November 1, 2026 | — | — |
| 82 |  Video ViewerYUV/Raw video viewer with ISP sideband overlay support | 0.8.2 | Open source | July 1, 2026 | — | — |
| 83 |  karikariImage, video, and audio viewer for Windows with archive support | 1.1.3 | Open source | April 20, 2026 | — | ★ 1 |
| 84 | PProject Viewer 365The leading viewer for opening, reading and sharing Microsoft Project files. | 26.12.1292 | Proprietary | April 29, 2026 | 26.8 MB | — |
| 85 |  Doc ViewerA tiny, fast, native PDF viewer | 0.1.7 | Open source | November 9, 2026 | — | — |
| 86 |  Drawing PanerA tiny, fast, native DXF viewer | 0.1.7 | Open source | November 10, 2026 | — | — |
| 87 |  Image ShutterA tiny, fast, native SVG viewer | 0.1.7 | Open source | November 10, 2026 | — | — |
| 88 |  Markdown ViewerQuick and easy Markdown file viewer | 1.0.8 | Open source | January 9, 2026 | — | — |
| 89 |  MoonViewer这是一个极简的基于pyside6的图片查看器 | 1.2 | Open source | March 29, 2026 | — | — |
| 90 | PPrettyReMarkA native, tabbed Markdown viewer for Windows with live reload and syntax highlighting (fork of eagle1's PrettyMark). | 1.13 | Open source | October 6, 2026 | 51.6 MB | — |
| 91 | DDjVuLibre DjViewDjVu is a web-centric format for distributing documents and images. DjVu was created at AT&T Labs-Research and later sold to LizardTech Inc. DjVuLibre is a GPL implementation of DjVu maintained by the original inventors of DjVu. | 3.5.29+4.12 | Open source | January 25, 2026 | 23.6 MB | — |
| 92 | CCoolUtils Mail ViewerCoolutils' Mail Viewer is a free program that lets you view MSG, EML, EMLX, P7M, ICS, VCF and winmail.dat (TNEF) files. | 7.1.9809.1806 | Free | November 9, 2026 | 38.3 MB | — |
| 93 | CCoolUtils Outlook ViewerThis PST file viewer serves as the perfect free PST viewer download for anyone needing to access Outlook data files. This flexible, easy to use viewer features an intuitive interface. | 4.2.0.93 | Free | November 9, 2026 | 44.3 MB | — |
| 94 |  gigNative Frigate multi-camera viewer for Windows. | 0.2.0.6 | Open source | July 15, 2026 | — | — |
| 95 |  FolderViewLightweight image viewer for folders and ZIP archives. | 1.0.3 | Open source | July 16, 2026 | — | — |
| 96 | AAccessData Registry ViewerFree Windows forensic registry viewer that lets you view the contents of Windows operating system registries. | 2.0.0.7 | Proprietary | September 30, 2026 | 30.4 MB | — |
| 97 | FFastPictureViewer ProfessionalA fast raw image viewer designed for digital photographers | 1.96.401.0 | Proprietary | May 27, 2025 | 39.6 MB | — |
| 98 | BBandiViewA New Standard for Image Viewers | 8.05 | Proprietary | November 3, 2026 | — | — |
| 99 | DDashcam ViewerDashcam Viewer is powerful, state-of-the-art software with unique and functional features that will unleash your dashcam’s full potential. Let us keep track of things so you can have peace of mind. | 4.0.7 | Proprietary | September 18, 2025 | 111.8 MB | — |
| 100 | EEdraw Diagram ComponentA diagram component that can be used from developers in order to create a wide range of diagrams using templates, shapes, and drawing tools. | 5.0.0.1302 | Proprietary | July 7, 2022 | 4.5 MB | — |