Looking for something like Fail2Ban? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 3 are free or have a free plan and 8 are open source.
Block hosts after repeated authentication errors with Fail2Ban, a daemon for monitoring failed logins.
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Plugins | — | Not stated | Linux, macOS, Windows |
| 2 | Agentic Radar | — | Yes | — |
| 3 | Advisory Database | — | Not stated | — |
| 4 | AndroGuard | — | Yes | Android |
| 5 | GitDorker | — | Not stated | — |
| 6 | Plugins | — | Yes | — |
| 7 | pyWhat | — | Yes | — |
| 8 | Frida | — | Not stated | — |
| 9 | Cutter | Free | Not stated | Web |
| 10 | Unblob | — | Not stated | Web |
Browse community-maintained materials and plugins for the Ghidra reverse engineering framework.
Agentic Radar scans agent workflows for security issues and helps developers review potential risks.
GitHub Advisory Database catalogs CVEs and GitHub-originated security advisories affecting open-source software.
AndroGuard provides tools for reverse engineering and penetration testing Android applications.
GitDorker searches GitHub for exposed secrets using a collection of search patterns.
Find community-provided plugins for the Binary Ninja reverse engineering platform.
pyWhat identifies items such as email addresses and IPs from text or packet captures, according to its project description.
Instrument running software with Frida, a dynamic analysis toolkit for observing and reprogramming applications.
Analyze software with Cutter, an open-source reverse engineering platform powered by Rizin.
unblob extracts files from complex binary blobs and firmware images, supporting security analysis of embedded software.
Anubis weighs incoming HTTP requests to help block AI crawlers before they access a website.
Monitor network traffic with Sniffnet, a desktop network analysis application.
Monitor network activity by process in a terminal with RustNet, which includes packet inspection.
Snyk CLI scans and monitors software projects for security vulnerabilities.
Block internet access per Android app with NetGuard, a firewall that does not require root.
Manage two-factor authentication codes with OTP Auth, an iOS app listed on the App Store.
Discover hosts and map networks with Nmap, a network exploration and security scanning tool.
Ndiff compares Nmap scan results from two XML files, showing changes such as hosts and ports appearing or disappearing.
DNSDumpster searches domain records and related hosts for domain research and reconnaissance.
Whatsupcams lists live webcams from locations including Slovenia, Italy, and Croatia, and invites visitors to host a camera.
Generate two-factor authentication codes with Proton Authenticator across supported devices, including phones and computers.
Kismet monitors and captures Wi-Fi network traffic, with wireless intrusion detection and wardriving features.
Build authentication into applications with Better Auth, an authentication framework.
Zeek analyzes network activity through an open source monitor with a flexible scripting language.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative
