Top VIEWER GitHub Repositories & Tools (2026)

An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer.

Make it yours. A customizable key viewer for DJMAX RESPECT V and any game.

px0 is the IDE for humans and AI, optimized for quick, fast code reviews. It turns your browser into a zero-latency console with native Git and GitHub integrations, instant search across massive codebases, and seamless handoff to local AI coding harnesses.

Free and open-source PDF editor for Windows with a built-in PDF 2.0 engine. View, annotate, OCR, merge, split, crop, rotate, compare, edit text, draw, sign, fill forms, print, flatten, and open password-protected PDFs without a subscription.

Advanced Text Editor for Android

Structural overview of a repository: every non-ignored file as a read-only panel on a zoomable canvas

Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WebGL2

Source 2 Viewer is an all-in-one tool to browse VPK archives, view, extract, and decompile Source 2 assets, including maps, models, materials, textures, sounds, and more.

macOS Quick Look extension for Markdown files.

Open-source IFC toolkit: WebGPU rendering, columnar in-memory store, exact-arithmetic geometry kernel. Runs from a CDN. 30+ TypeScript packages and 5 Rust crates.

3D visualization and mesh analysis for science and engineering

Claude Code session log viewer for JSONL files in ~/.claude/projects. Browse conversations, tool calls, tokens, and live tail sessions on desktop, web, and TUI.

A browser-based viewer for Office Open XML documents that renders to an HTML Canvas element.

Youtube client with older Android version support, background player, Google Gemini ✨ and many more features.

OpenSheetMusicDisplay renders sheet music in MusicXML format in browsers and headless with NodeJS. Based on VexFlow, OSMD is brought to you by PhonicScore.com.

Free EXR file viewer. DJV is a free, open-source high bit-depth image sequence player built for professional film, VFX & animation workflows. Use it for frame-accurate dailies, shot review, and A/B comparisons. Available for Linux, macOS, and Windows.

SVG/XML to Compose ImageVector: IntelliJ IDEA / Android Studio plugin + build-in previewer without compilation, CLI tool, Gradle plugin

An image and texture viewer for tga, png, apng, exr, dds, pvr, ktx, ktx2, astc, pkm, qoi, gif, hdr, jpg, jxl, tif, ico, webp, avif, heic, and bmp files. Uses Dear ImGui, OpenGL, and Tacent. Useful for game devs as it displays information like the presence of an alpha channel and querying specific pixels for their colour.

A toolkit for ebooks, audiobooks and comics written in Swift

Free, open-source CMTrace replacement for Windows log files: ConfigMgr/SCCM, Intune IME, and Autopilot ESP diagnostics, DSRegCmd triage, .evtx viewing, real-time tailing, and Windows error-code lookup. Windows, macOS, Linux.