Ndiff is a tool that compares Nmap scans. It takes two Nmap XML output files and prints the differences between them, such as hosts coming up and down and ports becoming open or closed. It can produce human-readable text or machine-readable XML output and is used by the Zenmap GUI to compare scan results.
DNSWatch offers DNS lookup and reverse DNS lookup tools with exact performance measuring and DNS server monitoring. It also provides RBL email blacklist lookup and IP location lookup. Paid products include DNS performance monitoring starting at $1 per month, mailserver blacklist monitoring starting at $3.5 per month, and a DNS changetracker starting at $7.9 per month. The site is free to use with ads.
DNSHistory is a developer resource for coding, documentation, communities, security research, or software tools.
BugBountyHunting.com is a community-curated resource that collects writeups, resources and content related to bug bounty hunting, described as a bug bounty hunting search engine. It aims to help beginners starting in web application security learn more about bug bounty hunting.
CrowdSec provides curated, crowd-powered threat intelligence in the form of actionable blocklists intended to help security operations teams block malicious IPs. The site describes a global view of threat intelligence built from data from real users, servers and production environments, and lists blocklists covering aggressive IPs, specific industries and countries, and high background noise.
MalShare is a community-driven public malware repository that provides free access to malware samples and tooling for the information security community. The site lists recently added samples with SHA256 hashes, file types and submission sources, and offers upload, search, download and API sections along with registration.
Cap is a free, open-source, self-hosted CAPTCHA alternative. It uses proof-of-work and JavaScript instrumentation challenges instead of visual puzzles, and is licensed under Apache 2.0. It is installed by running a server with Docker and adding a widget to a form.
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DNSWatch offers DNS lookup and reverse DNS lookup tools with exact performance measuring and DNS server monitoring. It also provides RBL email blacklist lookup and IP location lookup. Paid products include DNS performance monitoring starting at $1 per month, mailserver blacklist monitoring starting at $3.5 per month, and a DNS changetracker starting at $7.9 per month. The site is free to use with ads.
DNSHistory is a developer resource for coding, documentation, communities, security research, or software tools.
BugBountyHunting.com is a community-curated resource that collects writeups, resources and content related to bug bounty hunting, described as a bug bounty hunting search engine. It aims to help beginners starting in web application security learn more about bug bounty hunting.
CrowdSec provides curated, crowd-powered threat intelligence in the form of actionable blocklists intended to help security operations teams block malicious IPs. The site describes a global view of threat intelligence built from data from real users, servers and production environments, and lists blocklists covering aggressive IPs, specific industries and countries, and high background noise.
MalShare is a community-driven public malware repository that provides free access to malware samples and tooling for the information security community. The site lists recently added samples with SHA256 hashes, file types and submission sources, and offers upload, search, download and API sections along with registration.
Cap is a free, open-source, self-hosted CAPTCHA alternative. It uses proof-of-work and JavaScript instrumentation challenges instead of visual puzzles, and is licensed under Apache 2.0. It is installed by running a server with Docker and adding a widget to a form.
