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DomainCat.app VS ShellNewHandler

Compare DomainCat.app VS ShellNewHandler and see what are their differences

DomainCat.app

SSL, domain expiry & origin-cert monitoring. Free to start.

Rating
0 reviews
Pricing
Freemium $12 / Monthly ( "Pro, up to 50 domains")
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Alternatives Is it good?
ShellNewHandler

SourceForge.net: ShellNewHandler details page

Rating
0 reviews
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Alternatives Is it good?
Sendaway.co
Send files and text between devices with a simple 6-digit code. No account, email or shared link required. sponsored

Which is more popular?

Based on our record, ShellNewHandler seems to be more popular. It has been mentioned 2 times since March 2021.

social mentions
0 vs 2
Monitoring Tools popularity
54% vs 46%

Base details

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

DomainCat.app
ShellNewHandler
Website domaincat.app sourceforge.net
Pricing
Freemium $12 / Monthly ( "Pro, up to 50 domains") Official pricing
—
Platforms
Web
—
Company Startup from the United States · 1 - 9 employees · 2026 —
Listed in
Monitoring Tools DevOps Tools Security & Privacy Security MSP SSL Monitoring SSL Certificates Domains Website Monitoring +6
Cloud Storage Monitoring Tools File Sharing Website Monitoring +1

About DomainCat.app and ShellNewHandler

In their own words, as submitted to SaaSHub.

DomainCat.app
ShellNewHandler

DomainCat watches your domains so nothing expires unnoticed. Every 6 hours it checks SSL certificates (including the origin cert behind Cloudflare, which most tools miss), domain registration expiry, DNS, SPF/DKIM/DMARC records, blacklists and security headers, and alerts you by email, Slack,...

Read more about DomainCat.app

No description of ShellNewHandler yet.

Features and specs

What each product offers, as listed by its team.

DomainCat.app 10 features
ShellNewHandler 0 features
  • Domain Expiry Tracking
    See every domain's registration expiry date and days remaining in one dashboard, with registrar details from WHOIS.
  • Categorization and Tagging
    Organize domains into groups (e.g. one per client) and tags, then filter, search and bulk-edit by group or tag.
  • SSL Certificate Monitoring
    Checks every certificate every 6 hours (issuer, chain, days left) and alerts at 30, 14 and 7 days, then daily if it expires.
  • Origin Certificate Monitoring (Cloudflare)
    Behind Cloudflare, the padlock shows Cloudflare's edge cert. DomainCat also watches your real origin cert so it can't expire silently.
  • Domain Expiry Alerts
    Get warned before a domain registration lapses so a forgotten renewal never takes a site or email offline.
  • SPF / DKIM / DMARC Checks
    Checks email authentication records on every domain and flags missing or weak SPF, DKIM and DMARC.
  • Blacklist Monitoring
    Checks domain and mail-server IPs against major blacklists (Spamhaus, SpamCop and more) and alerts if one gets listed.
  • MCP Server for AI Assistants
    Built-in MCP server, listed in Claude's connector directory. Ask Claude, Cursor or VS Code "what expires this month?" with scoped, revocable access.
  • Slack, Teams & PagerDuty Alerts
    Send alerts to email, Slack, Microsoft Teams, webhooks or PagerDuty. MSPs can also alert the cert owner directly.
  • Free Domain Health Checker
    check.domaincat.app runs SSL, WHOIS, DNS, email security, blacklist and header checks on any domain or IP. No login needed.

No features have been listed yet.

Analysis

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

DomainCat.app
ShellNewHandler

Overall verdict

  • DomainCat.app is a useful tool for domain investors and portfolio owners who want to organize, track, and analyze their domain holdings in one place, offering a practical solution for managing domain assets efficiently.

Why this product is good

  • Helps consolidate and organize domain portfolios in a single dashboard
  • Provides tracking and analytics to monitor domain performance and value
  • Simplifies management tasks for those handling multiple domains
  • Offers a user-friendly interface designed for domain investors

Recommended for

  • Domain investors managing large portfolios
  • Individuals buying and selling domains regularly
  • Businesses tracking multiple domain assets
  • Anyone seeking to organize and analyze their domain holdings

Overall verdict

  • ShellNewHandler is a niche, lightweight utility hosted on SourceForge designed to give users more control over the Windows 'New' context menu (the ShellNew menu). It can be considered good for its specific narrow use case, but it is an older, minimally maintained tool that may not suit all users, especially those on modern Windows versions.

Why this product is good

  • Provides direct control over customizing the Windows right-click 'New' menu, allowing users to add or remove file type entries
  • Lightweight and free, without bundled bloatware typical of some other free utilities
  • Simple and focused in scope, making it easy to understand for its specific purpose
  • Open distribution via SourceForge allows transparency and no-cost access

Recommended for

  • Power users who want to declutter or customize the Windows New context menu
  • IT administrators managing standardized desktop environments across multiple machines
  • Users comfortable with older utility-style tools and Windows registry-related tweaks
  • Not recommended for casual users seeking modern, actively supported software with regular updates

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
DomainCat.app
ShellNewHandler
54% 54%
Monitoring Tools
46% 46%
100% 100%
Domains
0% 0%
0% 0%
Website Monitoring
100% 100%
100% 100%
SSL Certificates
0% 0%

Questions & Answers

As answered by people managing DomainCat.app and ShellNewHandler.

What makes your product unique?

DomainCat.app's answer

DomainCat is built for people who actually manage domains — not just own one or two. It gives you a single place to track domains across any registrar, monitor expiration dates, and get alerted before anything slips through the cracks. No bloat, no upsells, just clean domain visibility.

How would you describe the primary audience of your product?

DomainCat.app's answer

Freelancers and agencies managing domains for clients, MSPs tracking large domain portfolios, and individuals who own more domains than they can keep in their head. Anyone who has ever let a domain expire by accident is the target user.

What's the story behind your product?

DomainCat.app's answer

DomainCat was built by a solo developer who kept losing track of domains spread across multiple registrars. The existing tools were either locked to a single registrar or way too complex. So he built the tool he actually wanted to use — and decided to ship it.

Why should a person choose your product over its competitors?

DomainCat.app's answer

Most domain management tools are either built into a registrar (so they only show you their domains) or are enterprise-priced spreadsheet replacements. DomainCat is registrar-agnostic, affordable, and designed to be immediately useful without a setup headache. MSPs and power users can manage unlimited domains without paying enterprise prices.

Which are the primary technologies used for building your product?

DomainCat.app's answer

Node.js, PostgreSQL, Docker, and Cloudflare. Hosted on Hetzner. Auth via Auth0, payments via Stripe.

Who are some of the biggest customers of your product?

DomainCat.app's answer

DomainCat is an early-stage product with a growing base of freelancers, small agencies, and MSPs. We're not naming customers publicly at this stage.

User comments

Share your experience with using DomainCat.app and ShellNewHandler. For example, how are they different and which one is better?

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

DomainCat.app 0 mentions
ShellNewHandler 2 mentions

Tracking DomainCat.app since Mar 2026.

  • I recently got libreoffice, but now the new option in right click looks like a mess. Can someone help me get rid of them please?
    Use Shell New Handler. Run the portable app and simply untick the items you don't want to appear in your new context menu. Source: about 4 years ago
  • This menu should be easy to add/remove programs to... Who is really creating Access Databases from this menu often enough to keep it here? (Not me!) Is there an easy way to edit this?
    I've always used ShellNewHandler for this. It's a really simple portable utility that allows you to remove most of the items from that menu. Tested it out on Windows 11 and it's still compatible. Source: over 5 years ago

Alternatives to DomainCat.app and ShellNewHandler

When comparing DomainCat.app and ShellNewHandler, you can also consider the following products.

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