Mario Janković

I built a (very) successful first startup that's generating a lot of revenue. Now I'm building Glint

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After building Upstream.so (now the leading platform for 24/7 YouTube livestreaming), I've been working on my next venture: Glint.so


https://www.youtube.com/watch?v=PiALjl4F9HY


Glint replaces multiple tools you're already paying for (video calls, collaboration boards, and file sharing) with one seamless experience. It feels like everyone's using the same computer, but from anywhere in the world.


Why we built Glint:

  • Most collaboration happens across fragmented tools - information gets lost between meetings

  • Teams waste time trying to find where files were shared or decisions were made

  • Traditional calls end and everything disappears - Glint spaces remain exactly as you left them

  • We needed a central hub that's both the meeting AND the workspace

Key features:

  • Persistent spaces that become your team's digital headquarters

  • Real-time document viewing and editing without switching tools

  • Video calls integrated directly into your workspace

  • Browse together in real-time (and turn any website collaborative by adding glint.so/ before the URL)

  • Completely free core experience (no more paying for 3+ different tools)

Why trust Glint:

  • Built by a solo developer with 20+ years of experience working with major industry names

  • Backed by the same team that built Upstream.so (a proven success)

  • EU based, with strong data privacy considerations

  • For larger infrastructure challenges, supported by the established Upstream engineering team

  • Built by someone who uses these collaboration tools daily and understands the pain points firsthand

Our waitlist is now open, and I'd love to offer ProductHunt community members priority access when we launch.


Happy to answer questions about building collaborative tools or my journey from first to second startup!

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