Software Alternatives & Startups

lsof VS RealUptime.io

Compare lsof VS RealUptime.io and see what are their differences

lsof

Lsof lists open files for running UNIX processes. It is a

Rating
0 reviews
RealUptime.io

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.

Rating
0 reviews
Pricing
Freemium Free trial $18.99 / Monthly (Monitor Growth)

Which is more popular?

Monitoring Tools popularity
57% vs 43%
alternatives listed
22 vs 9

Base details

Website, pricing, platforms and company facts side by side.

l
lsof
RealUptime.io
Website people.freebsd.org realuptime.io
Pricing
Freemium Free trial $18.99 / Monthly (Monitor Growth) Official pricing
Platforms
Web SaaS
Company Startup from the United States · 1 - 9 employees · 2026
Listed in

About lsof and RealUptime.io

In their own words, as submitted to SaaSHub.

l
lsof
RealUptime.io

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...

Read more about RealUptime.io

Features and specs

What each product offers, as listed by its team.

l
lsof 0 features
RealUptime.io 6 features

No features have been listed yet.

  • Regional monitoring
    Every check runs from 4 regions: US East, US West, Europe, Asia Pacific
  • Public status pages
    Per-region readings by default, incident updates, custom domains, subscriber alerts
  • Error tracking
    Exceptions grouped into issues and tracked across releases, 10,000 free events
  • Vendor outage alerts
    Get alerted when a service you depend on goes down, confirmed by independent probes
  • Flat pricing
    No per-subscriber or per-check fees, bill known before the month starts
  • Automation
    REST API, MCP server, GitHub Action, and Terraform provider

Analysis

An editorial look at what each product does well and who it suits.

l
lsof
RealUptime.io

Overall verdict

  • lsof (List Open Files) is a mature, battle-tested Unix/Linux utility that reliably reveals which files, sockets, and resources are opened by processes, making it an indispensable diagnostic tool for system administrators and developers.

Why this product is good

  • Provides comprehensive visibility into open files, network sockets, pipes, and devices tied to running processes
  • Extremely useful for troubleshooting 'device busy' errors, port conflicts, and locating processes holding onto deleted files
  • Highly portable across many Unix-like systems including FreeBSD, Linux, macOS, and Solaris
  • Long history of stable, well-maintained releases with extensive documentation and community support
  • Powerful filtering options let you query by user, process, port, file, or network connection

Recommended for

  • System administrators diagnosing resource and file-locking issues
  • Developers debugging network connections and socket usage
  • Security professionals investigating suspicious process activity and open network ports
  • Anyone needing to identify which process is using a specific file, directory, or port before unmounting or killing

No analysis of RealUptime.io yet.

Videos

Walkthroughs and reviews on video.

l
lsof 2 videos + Add
RealUptime.io 0 videos + Add

8 Basic lsof Commands Every Sysadmin Needs to Know

More videos

  • - HakTip - Network monitoring in Linux with lsof

No RealUptime.io videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
l
lsof
RealUptime.io
57% 57%
43% 43%
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%

Questions & Answers

As answered by people managing lsof and RealUptime.io.

What makes your product unique?

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.

Why should a person choose your product over its competitors?

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.

How would you describe the primary audience of your product?

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.

What's the story behind your product?

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.

Which are the primary technologies used for building your product?

RealUptime.io's answer:

Next.js and TypeScript, PostgreSQL, and a probe fleet deployed across four regions on Fly.io.

User comments

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Alternatives to lsof and RealUptime.io

When comparing lsof and RealUptime.io, you can also consider the following products.