Tools for network engineers

Built by engineers.
For engineers.

Topology Systems is a growing collection of sharp, focused tools for IT and networking professionals. No filler. No fluff. Just the tool, the answer, and back to work.

Browse All Tools About the project
Tools
OUI Lookup
Identify hardware vendors from MAC addresses. Bulk input, any format, with endpoint type classification and CVE search links.
Live
Subnet Calculator
CIDR, wildcard masks, host ranges, and broadcast addresses — computed instantly in your browser.
Coming Soon
SNMP OID Lookup
Resolve MIB OIDs to human-readable names with vendor context and RFC references.
Coming Soon
Syslog Decoder
Parse and decode raw syslog severity and facility values instantly — no RFC lookup required.
Coming Soon
The tools that should
have existed already.
Why Topology Systems? Most network tools haven't meaningfully improved in years. They're wrapped in ads, slow to load, and clearly built by people who've never had to use them under pressure. We're building the ones we actually reach for every day.
Opinionated by design. Every tool here is built around a specific workflow. We'd rather do one thing exactly right than ten things adequately. If a tool doesn't make your job measurably faster, it doesn't ship.
Principles
01
Speed first
Every tool loads fast and responds faster. If it takes more than a second, something's wrong.
02
No interruptions
If we ever show ads, they won't get between you and the tool. Your workflow comes first, always.
03
Accuracy matters
Data is kept current. We'd rather show nothing than show something wrong.
04
Built to grow
New tools ship regularly. If you have a workflow that needs a better tool, we want to hear about it.