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highlight.io (YC W23) — The open source, fullstack monitoring platform: stop guessing why…

highlight.io is the open source, full-stack monitoring platform. With just a few lines of code, Highlight makes it easy to understand what's slowing down your users and swiftly address errors and regressions on your web app.

highlight.io is a Y Combinator company in the Winter 2023 batch. Its directory entry describes it as: The open source, fullstack monitoring platform: stop guessing why…. The founders listed are Jay Khatri (Cofounder, CEO (acquired by LaunchDarkly)), Vadim Korolik (Founder) (Y Combinator directory entry, February 2, 2023).

6 more companies from YC Winter 2023 ↓

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highlight.io

New accelerator entry · 2023-02-02 · the record

Winter 2023
batch
8
people
Early
stage
United States of America
region
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What the record says

BatchWinter 2023
Announced2023-02-02
StageEarly
StatusAcquired
Team size8
IndustryB2B
Sub-industryB2B -> Engineering, Product and Design
SectorsDeveloper Tools, SaaS, B2B, Open Source, Monitoring
RegionsUnited States of America, America / Canada, Remote, Fully Remote
BasedSeattle, WA, USA; Remote
HiringNo
Sitehttps://www.highlight.io/
Previously known asHighlight

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Also in YC Winter 2023

Same batch, B2B first.

What do you want to do with highlight.io?

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In their words

highlight.io is the open source, full-stack monitoring platform. With just a few lines of code, Highlight makes it easy to understand what's slowing down your users and swiftly address errors and regressions on your web app. Imagine that you have a customer reporting an issue on your web app. With highlight.io, you can playback their exact interactions to reproduce the bug and get notified of any future errors that could happen. That being said, we’re just getting started! We have plans to go way deeper into your observability stack to give you all of the visibility you need. Join us on this journey: - Star us on GitHub (https://github.com/highlight/highlight) to keep up with releases and news. - Join our Discord (https://highlight.io/community) to share product feedback and thoughts.

Want the whole picture on highlight.io?

Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News

A Full Report on highlight.io: verified, sourced, every claim cited, ready in a few minutes. See pricing.

What the Full Report on highlight.io covers

  1. The Short Answer

  2. Which Company This Is

  3. What They Do, And How The Money Works

  4. Who Runs It, And How To Reach Them

  5. The Money: Funding, Valuation, Runway

  6. Who Pays Them, And Who They Are Up Against

  7. Warning Bells

  8. Sources

    1 cited source found

Plus the sections for what you are deciding, which you pick after ordering.

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First screen of a real sample Full Report on EchoStar: the verdict, 17 sections, 63 cited sources, built 2026-10-21A real finished report, first screen. Opens in a new tab.

The full profile

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Sourced from the company's Y Combinator directory entry.

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highlight.io: Accepted into Y Combinator Winter 2023
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Permanent URL: https://mentionfox.com/funding/yc-highlight-io
Last updated 2026-10-20
Primary record: Y Combinator directory entry
highlight.io (YC W23) — The open source, fullstack monitoring platform: stop guessing why…. MentionFox, 2026-10-20. https://mentionfox.com/funding/yc-highlight-io