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Open3D Viewer
Free viewer for STL, GLB, STEP — replaces Windows 3D Viewer
Free 3D file viewer for STL, GLB, OBJ, FBX, STEP, IGES and more. Direct replacement for Microsoft 3D Viewer (removed July 2026). Works on Windows, Android, iOS, and in any browser. No account, no upload — files stay on your device.
Hi PH 👋
I built Open3D Viewer because Microsoft removed 3D Viewer from the Store on July 1, 2026, and suddenly nobody on Windows could double-click an .stl or .glb without hitting "no app associated with this file."
Every alternative I found needed an account, a login, or a subscription — for the trivial task of *looking at a file*.
Open3D Viewer is the anti-that:
• Opens STL, GLB, OBJ, FBX, PLY, 3MF — everything MS 3D Viewer opened
• PLUS STEP, IGES, DXF — the CAD formats MS never supported
• Windows, Android, iOS, and a web version at open3d.app
• No account, no upload, no subscription, no watermark
• Runs offline once installed
Bonus features: point-to-point measurement, walk-through mode (step inside architectural GLBs), cross-section, HDRI lighting, print-readiness checks for STL/3MF, screenshot + animated GIF capture.
Would love your feedback — especially on which formats you'd want next.
About Open3D Viewer on Product Hunt
“Free viewer for STL, GLB, STEP — replaces Windows 3D Viewer”
Open3D Viewer was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #119 on the daily leaderboard. Free 3D file viewer for STL, GLB, OBJ, FBX, STEP, IGES and more. Direct replacement for Microsoft 3D Viewer (removed July 2026). Works on Windows, Android, iOS, and in any browser. No account, no upload — files stay on your device.
On the analytics side, Open3D Viewer competes within Android, Windows, Design Tools and 3D Modeling — topics that collectively have 334k followers on Product Hunt. The dashboard above tracks how Open3D Viewer performed against the three products that launched closest to it on the same day.
Who hunted Open3D Viewer?
Open3D Viewer was hunted by Rajesh. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Open3D Viewer including community comment highlights and product details, visit the product overview.
Rajesh