This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Every time an AI hands you amd orhtml file, you need somewhere to open it. Porthole is that app. Lightweight viewer + editor for Markdown and HTML — GitHub-flavored rendering, syntax highlighting, live split-view preview. Set it as your default and AI-generated files route there automatically. Free, open source. macOS + Windows. Note: macOS will show a security prompt on first launch — right-click and select Open.
Hey PH - I'm Kuran, I built this. It started as a personal project because every AI tool I use generates markdown or HTML files and there was no great default app to open them on macOS or Windows.
Happy to answer questions and also very open to feedback on what's missing — file history, export to PDF, and a URI scheme handler (porthole://) are already on the roadmap.
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About Porthole on Product Hunt
“Finally see what AI made.”
Porthole was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #47 on the daily leaderboard. Every time an AI hands you amd orhtml file, you need somewhere to open it. Porthole is that app. Lightweight viewer + editor for Markdown and HTML — GitHub-flavored rendering, syntax highlighting, live split-view preview. Set it as your default and AI-generated files route there automatically. Free, open source. macOS + Windows. Note: macOS will show a security prompt on first launch — right-click and select Open.
Porthole was featured in Productivity (651.7k followers), Open Source (68.4k followers) and Developer Tools (512.4k followers) on Product Hunt. Together, these topics include over 213k products, making this a competitive space to launch in.
Who hunted Porthole?
Porthole was hunted by kuran malhotra. 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.
Want to see how Porthole stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
kuran malhotra