Wireshark is unbeatable for decoding packets, and the wrong tool for “what is my Mac connecting to?”. It captures raw packets on an interface and shows protocol detail, but it doesn't organise traffic by app, and encrypted payloads (almost everything today) are opaque without keys. LightAtom answers the app-level question directly: every connection grouped by the app that made it, with ports, domain names, data volume and a map, and no capture filters to set up.
Who this is for
- You opened Wireshark to find which app was using bandwidth, and drowned in packets.
- You want a per-app view that runs continuously, not a capture you start and stop.
- You're not debugging protocols, just understanding traffic.
Comparison
| LightAtom | Wireshark | |
|---|---|---|
| Price | Not announced yet | Free |
| Platforms | macOS | Windows, macOS, Linux |
| Blocks connections | No | No |
| Per-app bytes / live rate | Yes | No |
| Map view | Yes | Not listed |
| Open ports view | Yes | Not listed |
| DNS / domain names | Yes | Not listed |
| Open source | Not listed | Yes |
| macOS support | macOS 14 or later | Not listed |
| Last checked | 24 Oct 2026 | 24 Oct 2026 |
When to stay with Wireshark
Use Wireshark when you need packet-level detail: protocol analysis, retransmissions and TCP behaviour, malformed packets, decoding traffic with TLS keys, or capturing from other devices. It's free, open source and the industry standard. Apart from reading DNS answers for domain names, LightAtom doesn't capture packets.
How to switch
- Keep Wireshark for packet analysis; it doesn't conflict with LightAtom.
- Use LightAtom first to find which app and which server matter.
- Then, if you still need packet detail, capture just that host in Wireshark with a filter like host 203.0.113.10.
Frequently asked questions
Is Wireshark available for Mac?
Yes, Wireshark runs on macOS, free. Installing ChmodBPF lets you capture without running it as root.
Can Wireshark show which app made a connection on a Mac?
Not as a normal view. Wireshark works with packets; mapping them to processes needs extra tooling. A per-app monitor does this directly.
What is a lighter alternative to Wireshark?
For packets, tcpdump in Terminal. For per-app connections, LightAtom, or lsof and nettop in Terminal.
Can Wireshark see HTTPS contents?
Only if you give it the TLS session keys, for example from a browser's SSLKEYLOGFILE. Otherwise payloads are encrypted.