
Revievv
GeometryViewer
GrabCAD Workbench
Online 3D Viewer
3D Viewer Online
3D Viewer Max
3DViewer.co
Open3D Viewer
SplitFile
GSplit
Free File Splitter
File Splitter And Joiner
Splitcat
Batch File Split & Join
Xtremsplit
WinCut
Revievv lets engineering teams review 3D CAD models (STEP/STL), PDFs and images directly in the browser. Pin comments on specific points of a 3D model, track issues with severity levels, and share a review link โ reviewers don't need a CAD license or even an account.
Upload a STEP file, invite your team or suppliers by link, collect feedback with precise visual context. No more screenshots in PowerPoint, no more "see page 3, top left corner" emails.
Key features: - 3D STEP/STL viewer in the browser โ no plugins, no installation - Pin comments directly on 3D model surfaces - PDF and image review with annotations and measurements - Share review links โ unlimited free reviewers on all plans - Issue tracking with severity, status and deadlines - Export review as PDF with all annotations - Wire tracing on electrical schematics
Free plan available. No credit card required.
Revievv
SplitFileNo SplitFile videos yet. You could help us improve this page by suggesting one.
Revievv's answer
Reviewers don't need a CAD license, an account, or any installed software. Just a link. Most design review tools charge per seat or require everyone to have CAD software. Revievv gives unlimited free reviewers on every plan - so your suppliers, clients and cross-functional teammates can give feedback without any barriers.
Revievv's answer
Some competitors costs six figures and takes months to deploy. Revievv starts at $0, works in 30 seconds, and does what engineering teams actually need: open a CAD file, pin comments on the 3D model, share a link, collect feedback. No procurement process, no IT department required.
Revievv's answer
Mechanical and electrical engineers in teams of 5-50 people โ product design, manufacturing, automotive, aerospace. Engineers who send STEP files by email, mark up screenshots in PowerPoint, and lose feedback in chat threads. Also useful for engineering managers who need documented, traceable design reviews instead of meeting notes in Excel.
Revievv's answer
Built by an engineer with ADHD who got tired of the same broken design review process, also had problems with doing all those related topics โ screenshots in PowerPoint, feedback lost in email threads, "see attachment page 3 top left corner." Every CAD collaboration tool was either enterprise-priced or view-only. Revievv fills the gap: real design review with 3D markup, simple enough to start in 30 seconds, affordable enough for a small team.
Revievv's answer
Three.js for 3D rendering, OpenCascade for STEP/STL geometry processing, Next.js for the web application, and cloud infrastructure for file conversion. Everything runs in the browser โ no plugins or desktop installation needed.
Revievv's answer
Revievv is an early-stage product used by small and mid-size engineering teams. We're focused on onboarding our first 100 customers โ teams that need fast, affordable design review without enterprise overhead.
GeometryViewer - Free browser-based 3D model viewer for 3D printing enthusiasts and designers. Open STL, OBJ, GLB, GLTF, 3MF and FBX files instantly in your browser. Get a shareable link, view in AR on mobile, export a GIF, or embed it on Shopify or any website.
GSplit - GSplit is a free file splitter that splits any file into smaller files called pieces. Lots of customization options, attractive and easy-to-use interface.
GrabCAD Workbench - GrabCAD Workbench is a worldโs most popular online community specially designed for mechanical engineers to share talent, expand knowledge and collaborate with the others.
Free File Splitter - File Splitter is a handy freeware program which allows to easily split and merge files
Online 3D Viewer - Online 3D Viewer is an engine to visualize 3D models online.
File Splitter And Joiner - File Splitter And Joiner is an easy to use tool to quickly split and combine files. You can split one large file into multiple smaller files. You can also merge the small chunks and create the original large file again.