Online PCAP analyzers compared: pick the tool by the job

Every online PCAP analyzer promises to explain a capture, yet each one is built for a different job: a quick look at a sanitized trace, a private review of a client's traffic, root-cause work on an outage, or pulling every file out of a forensic recording. This page puts seven tools side by side, the desktop ones analysts already use included, and sorts them by what you need to get done. We build one of them, A-Packets, so every section also says where another tool is the better choice. The facts come from the vendors' own pages, read on 5 November 2026.

Seven PCAP analysis tools at a glance

The table answers three questions first: where the tool runs, what you can do without paying, and what happens to the capture once you hand it over. The last column is the job each tool does best, in our reading of its documentation rather than a benchmark. Prices and limits change, so treat the table as a snapshot and check the vendor's page before you buy. A dash means the vendor publishes no figure, or the service no longer exists.

Pick by the job

Most analysts end up with two of these tools: one to find what is wrong in a capture and one to prove it frame by frame. Each case below starts from the question you have, names the tool that answers it fastest and the one to confirm with, and says plainly when A-Packets is not the right first step. If your question is not here, the tool-by-tool section further down describes what each product is for.

Open a capture without installing anything

A-Packets and Red Hand Analyzer both take a .pcap or .pcapng file in the browser with no account. A-Packets accepts up to 25 MB and makes the report public, which suits samples, labs and CTF captures. Red Hand accepts 100 MB and one file an hour without an account, or 500 MB with a free one, and it reads Windows pktmon .etl files directly, while A-Packets needs them converted with pktmon etl2pcap first. If the capture holds anything you would not post on a forum, skip both free modes and read the privacy question at the end of this page.

Check a capture for exposed logins

A-Packets lists each login with its protocol, client and server, and shows challenge-response exchanges such as NTLM and Kerberos as hashes to treat as exposed. NetworkMiner's Credentials tab covers a longer protocol list, POP3, RADIUS and TDS among them, and runs offline on your own machine. Wireshark finds the same logins one protocol at a time with display filters. For an audit that has to stay private, NetworkMiner or a private A-Packets workspace keeps the passwords off public pages; the cleartext password audit walks through the whole check.

Recover files from the traffic

Here NetworkMiner is the stronger tool. It extracts files from FTP, HTTP, SMB, SMTP, IMAP, POP3, TFTP and more, while A-Packets carves from HTTP only, and Wireshark's Export Objects covers HTTP, SMB, FTP-DATA, TFTP, DICOM and email messages. A-Packets is quicker when the files came over plain HTTP and you want each one next to the request that fetched it. None of the three can carve a file out of TLS without the session keys. NetworkMiner's free edition reads PCAP but not PcapNG; the Professional edition reads both.

Triage an infected host or an alert

This is the job A-Packets is built for. The report brings up what needs attention as soon as it opens, and the network graph, the HTTP sessions and the DNS lookups show where the machine went and what came back, so getting from a finding to its evidence takes a few clicks, not an afternoon in a packet list. Confirm the key frames in Wireshark; the malware traffic analysis walkthrough shows that path on five infections. Red Hand Analyzer also works from behavior and adds threat-intelligence context on the endpoints. Teams that want IDS signatures and AI-assisted security investigations under a contract can look at PacketSafari Security and CloudShark Enterprise, which both run Suricata against the capture.

Find out why a service fails or slows down

This is PacketSafari's main job. Its RCA product compares healthy and failing traffic and points to the sequence that explains the failure, with the frames behind it. Wireshark's TCP analysis, expert information and IO graphs do the same work by hand. A-Packets is not built for latency, retransmission or window analysis: use it to see who was talking, not why the conversation stalled.

Keep the capture inside your network

Wireshark and NetworkMiner never send a capture anywhere, which makes them the default for evidence that cannot leave a laptop. For a shared, browser-based tool inside your boundary, A-Packets, PacketSafari and CloudShark Enterprise all offer on-premise deployments. A-Packets publishes its Docker Compose, Kubernetes and air-gapped install guides, so you can review the setup before you contact anyone about the self-hosted PCAP analyzer.

Work with very large captures

CloudShark Enterprise is built for multi-gigabyte files, and PacketSafari's plans target captures of up to 1 GB. A-Packets takes 25 MB in public mode and up to 100 MB on the Advanced private plan, and Red Hand up to 500 MB with a free account. For anything bigger, split the file by time or cut it down to the hosts you care about with editcap or tshark first: how to trim a capture before you upload it.

Tool by tool

Each summary says what the tool is, what it does well, where it falls short and when to choose it. What we say about other vendors' products is based on their public pages and documentation; we did not upload captures to their services for this page or test their paid plans. If something here is out of date, tell us through the contact page and we will correct it.

A-Packets

A browser-based analyzer for fast detection and investigation. The report brings up what needs attention as soon as it opens and ties each finding to the hosts, sessions and files behind it. Strong at: going from a raw capture to concrete, evidence-backed findings in a few clicks, a public link for a sanitized capture's report, and a private workspace, with email alerts on the Professional and Advanced plans, or an on-premise build, for sensitive ones. Weaker at: packet-level detail, which it does not show, file carving outside HTTP, and TLS decryption. Choose it when you need to know fast what is wrong in a capture, and why, before you open Wireshark. Twenty sample reports show its output on public captures.

Red Hand Analyzer

A free online analyzer from Red Hand that builds an investigation out of a capture: activities, endpoints, DNS, flows and the connections behind each finding. Strong at: behavior-based detection, threat intelligence on domains and endpoints, larger free uploads and direct support for Windows .etl files. Weaker at: its analyzer page describes neither a packet-level view nor a self-hosted option, so captures have to be uploaded and findings confirmed in another tool. Choose it for an automated read of suspicious behavior on a capture you are allowed to upload.

PacketSafari

An enterprise packet investigation platform from Ripka Technologies with two products, RCA and Security, an AI Agent and Copilot, and a Wireshark-based analyzer with a packet list, decoded fields and stream following. Strong at: root-cause analysis on difficult captures, files of up to 1 GB, AI-assisted reports that keep the frames and filters behind each answer, and on-premise deployment with a private AI model. Weaker at: price of entry, since the plans are annual contracts arranged through sales. Choose it when a team needs defensible root-cause or security findings on large captures and has an enterprise budget.

CloudShark Enterprise

QA Cafe's packet analysis platform, sold as a single on-premises deployment. It shows Wireshark's packet view in the browser with Wireshark's protocols and display filters, adds Suricata alerts and Zeek logs, and searches across multi-gigabyte captures. Strong at: one shared, Wireshark-compatible way of working for a large team, at one yearly price for unlimited users. Weaker at: quick checks, as its product page lists no public upload or free tier. Choose it when an enterprise wants a shared capture library on its own servers.

Wireshark

The free, open-source protocol analyzer for Windows, macOS and Linux, and the reference every other tool here is checked against. Strong at: dissecting each packet field by field, display filters, TCP analysis, IO graphs and TLS decryption once you load the session keys. Weaker at: summaries. It shows packets, so the first overview of a large capture takes time and experience. Choose it to confirm any finding, from any tool on this page, at the frame level.

NetworkMiner

Netresec's open-source network forensics tool for Windows and Linux. It parses captures offline, builds a host inventory with OS fingerprints and extracts files, messages and credentials from a long list of protocols. Strong at: file carving from FTP, SMB, email and HTTP, with the evidence never leaving your machine. Weaker at: the free edition does not read PcapNG, and several features need Professional at $1,300. Choose it to recover forensic artifacts from captures that cannot be uploaded anywhere.

PacketTotal

A free online service that ran Suricata and Zeek, then called Bro, over uploaded captures, and a common recommendation in older guides. On 5 November 2026, packettotal.com redirected to a host that does not resolve, so the service cannot be used. Treat articles that still recommend it as out of date, and pick one of the free browser options above instead.

Where A-Packets is weaker

A comparison written by a vendor should say where the vendor's own product loses. These are the limits that matter most when you choose between the tools above, so you can rule A-Packets out quickly if one of them is a deal-breaker for your capture:

• No packet list or byte view. A-Packets rebuilds sessions and lists what they carried; frame-level detail lives in Wireshark.
• No TLS decryption, even when you have the session keys.
• Files are carved from HTTP only: nothing from FTP data connections, SMB or email attachments.
• Free reports are public. That is the price of the free mode, so sensitive captures need a paid plan or the on-premise build.
• Smaller files than the enterprise tools: 25 MB free and up to 100 MB on paid plans, against Red Hand's 500 MB with a free account and PacketSafari's 1 GB.

How we compared

We read each vendor's product, pricing and documentation pages on 5 November 2026 and took limits and prices only from those pages; the A-Packets facts come from the product itself. The best-at column reflects what each vendor documents, not a test of ours. Sources: Red Hand Analyzer, PacketSafari pricing and features, CloudShark Enterprise, Wireshark and NetworkMiner. For more detail on two of the pairings, read a free CloudShark alternative and A-Packets vs PcapAI.