htop
Sysdig
vtop
GrandTotal
Glsof
Process Explorer
Wireshark
Lsof lists open files for running UNIX processes. It is a

UptimeRobot
statuspage
Better Stack
Indatus
Pingdom
StatusCake
Better Uptime
Uptime monitoring, status pages, and error tracking that show every region's reading, not one green dot. Flat pricing, no per-subscriber fees, real free tier.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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l
lsof
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|---|---|---|
| Website | people.freebsd.org | realuptime.io |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of lsof yet.
Most status pages collapse the whole world into one green dot. If you're up in Virginia but down in Frankfurt, that dot is lying to your customers. RealUptime checks from four regions (US East, US West, Europe, Asia Pacific) and shows every region's reading by default, so a partial outage can...
What each product offers, as listed by its team.

No features have been listed yet.
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
No analysis of RealUptime.io yet.
Walkthroughs and reviews on video.
8 Basic lsof Commands Every Sysadmin Needs to Know
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How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing lsof and RealUptime.io.
RealUptime.io's answer:
Every check runs from four regions and every region's reading is shown by default, on the public status page, not buried in a dashboard. Most tools collapse the world into one green dot, which means a regional outage can hide behind a healthy average. RealUptime treats "up in Virginia, down in Frankfurt" as information your customers deserve to see. That, and flat pricing: no per-subscriber fees, no per-check metering.
RealUptime.io's answer:
Two reasons. First, honesty by default: per-region status readings your customers can trust, instead of a single dot that averages problems away. Second, predictable cost: incumbents charge per status-page subscriber or per check, which punishes you for growing. RealUptime is a flat monthly price, the free tier is permanent, and one platform covers status pages, uptime monitoring, and error tracking so you are not stitching three vendors together.
RealUptime.io's answer:
Developers, small software companies, indie founders, and agencies who need to tell their own customers the truth about an outage. Teams big enough to need a status page and monitoring, but not big enough to want enterprise observability pricing.
RealUptime.io's answer:
I spent 8 years managing a T-Mobile retail store before building this. Retail teaches you that customers forgive problems but never forgive being lied to. When I looked at status page tools, the standard design was a single green dot that stays green while a whole region is down. I built RealUptime as the tool I would trust as a customer: every region shown, flat pricing, and a free outage tracker measured by our own probes instead of trusting vendors' own status pages.
RealUptime.io's answer:
Next.js and TypeScript, PostgreSQL, and a probe fleet deployed across four regions on Fly.io.
Share your experience with using lsof and RealUptime.io. For example, how are they different and which one is better?
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